3,364 results on '"Inclinometer"'
Search Results
2. Instrumentation Selection for Field Monitoring of Retaining Systems with Geofoam Inclusions
- Author
-
Bishnoi, Dinesh, Patil, Vikas, Dasaka, S. M., Krishna, A. Murali, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Lu, Xinzheng, Series Editor, Rujikiatkamjorn, Cholachat, editor, Xue, Jianfeng, editor, and Indraratna, Buddhima, editor
- Published
- 2025
- Full Text
- View/download PDF
3. Assessment of Cervical Joint Position Sense and Head Posture in Individuals With Myogenic Temporomandibular Dysfunctions and Identifying Related Factors: A Case‐Control Study.
- Author
-
Yüzbaşıoğlu, Ümit, Kaynak, Besime Ahu, and Taş, Serkan
- Subjects
- *
MANDIBLE , *TEMPOROMANDIBULAR joint , *MUSCULAR sense , *JOINT diseases , *MUSCLE strength , *TEMPOROMANDIBULAR disorders - Abstract
ABSTRACT Background Objective Methods Results Conclusion Temporomandibular dysfunctions (TMDs) have the potential to cause changes in cervical muscle strength, muscle endurance and position sense by changing muscle activation patterns, especially as a result of forward head posture. The effects of TMDs on cervical joint position sense (CJPS) and head posture remain controversial.The aim of this study was to evaluate the head posture and CJPS of individuals with TMDs and compare them with healthy individuals.This research, which was designed as a case‐control study, was concluded with the inclusion of total of 84 participants (42 individuals diagnosed with myogenic TMDs, 42 controls). The assessment of participants included pain severity, neck and jaw functionality and disability, CJPS, head posture and temporomandibular joint (TMJ) range of motion (ROM).Individuals with TMDs exhibited higher angular deviation in CJPS during flexion and extension (p < 0.001). Additionally, individuals with TMDs demonstrated higher TMJ pain, limitation and dysfunction severity, as well as a more limited TMJ ROM (p < 0.001). Head posture was similar between groups (p > 0.05). There is a significant relationship between VAS‐TMJ with VAS‐cervical, FAI, NDI, JFLS‐8 and TMJ ROM (p < 0.05). Moreover, a significant correlation was observed between NDI with FAI and TMJ ROM (p < 0.05).These results indicate that in addition to higher pain severity, disability and lower jaw ROM, CJPS of individuals with TMDs is also negatively affected. Also, parameters related to disability and functionality of cervical and TMJ were significantly correlated. Further studies are needed to determine the factors contributing to these results. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Balancing acts: a case study of postural stability comparison between active and retired aerobic gymnastics athletes with inclinometer sensors.
- Author
-
Prabowo Yudho, Firdaus Hendry, Hasanuddin, M. Iqbal, Dermawan, Dikdik Fauzi, Mahardhika, Dhika Bayu, and Risnawati
- Subjects
ANATOMICAL planes ,WEARABLE technology ,INCLINOMETER ,GYMNASTICS ,ATHLETES - Abstract
Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
5. Optical laser-generated electricity for powering tilt-meter sensor.
- Author
-
Nelfyenny, Dwi Bayuwati, Suryadi, Husdi, Irwan Rawal, Mulyanto, Imam, Dwi Prasetio, Aditya, Irawan, Dedi, Widiyatmoko, Bambang, and Setiono, Andi
- Subjects
HAZARD mitigation ,POWER transmission ,POWER resources ,MATHEMATICAL optimization ,INCLINOMETER - Abstract
This research investigated the feasibility and efficacy of power over fiber (PoF) transmission systems for geotechnical monitoring applications, addressing challenges associated with traditional power transmission methods. Leveraging fiber optic technology, PoF systems offer advantages such as high reliability, minimal signal loss, and immunity to environmental factors. The study presents a detailed design and implementation of a PoF transmission system, integrating a high-power laser source (HPLS) and photovoltaic technology for efficient power transmission over extended distances. Results demonstrate impressive volt-ampere characteristics and conversion efficiencies, with the optimized system configuration achieving a peak power output of 682 mW. Furthermore, the study evaluated the performance of a surface inclinometer sensor powered by the PoF system, showcasing its effectiveness in monitoring soil movements with remarkable stability and consistent power supply. Future research directions include scalability studies, optimization of system efficiency, and field deployments to broaden the applicability of PoF technology in geotechnical monitoring, ultimately advancing disaster mitigation and infrastructure resilience efforts. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
6. Monitoring of Slopes and Retaining Structures Related to Infrastructures Case Study Hydroelectric Power Plant Jiu River Livezeni Romania
- Author
-
Constantin Olteanu Andrei and Cristina Tomşa
- Subjects
geotechnical monitoring ,inclinometer ,displacement ,sliding slope ,Transportation engineering ,TA1001-1280 - Abstract
The Paper presents the results, interpretation and intervention measures obtained from inclinometer monitoring performed for a retaining structure built for the accomplishment of a hydrotechnical structure on Jiu River. The accomplishment of the hydrotechnical structure on Jiu River required a retaining structure of approximately 100m length adjacent to the slope which is crossed by the railway line Tg. Jiu - Simeria. The retaining structure made of 1500mm piles also keeps in safe condition the adjacent E79 Road section.
- Published
- 2024
- Full Text
- View/download PDF
7. Inclinometer use in primary total hip arthroplasty does not improve acetabular component positioning: a non-randomized control trial
- Author
-
Kyle Goldstein, Wyatt Tyndall, Michaela E. Nickol, and Johannes M. van der Merwe
- Subjects
Inclinometer ,Total hip arthroplasty ,Inclination ,Abduction angle ,Acetabular safe zones ,Orthopedic surgery ,RD701-811 - Abstract
Abstract Introduction Total hip arthroplasty (THA) is a common surgical procedure that aims to relieve pain, improve function, and increase mobility in patients with hip joint pathology. One of the most challenging aspects of THA is to determine the correct angle of the acetabular component’s placement. Intraoperative inclinometers have emerged as a promising tool to obtain accurate measurements of the acetabular component’s inclination. The primary objective of this study was to evaluate the accuracy and efficacy of using intraoperative inclinometers for THA. Methods This non-randomized control trial evaluated patients undergoing primary THA. Patients in the inclinometer group had an inclinometer used intraoperatively to measure acetabular component inclination, and patients in the control group had no inclinometer. Inclination and anteversion of the acetabular component were measured on postoperative radiographs. Results A total of 223 patients were included in the study. The mean inclination angle of the acetabular cup was significantly higher in the inclinometer group (43.9° vs. 41.5°, P
- Published
- 2024
- Full Text
- View/download PDF
8. A Study on the Factors Controlling the Kinematics of a Reactivated and Slow-Moving Landslide in the Eastern Liguria Region (NW Italy) through the Integration of Automatic Geotechnical Sensors.
- Author
-
Pepe, Giacomo, Musante, Barbara, Rizzi, Giovanni, Viola, Greta, Vigo, Andrea, Ghirotto, Alessandro, Armadillo, Egidio, and Cevasco, Andrea
- Subjects
PORE water pressure ,SENSOR placement ,POSITION sensors ,RAINFALL ,LANDSLIDES ,INCLINOMETER - Abstract
This paper deals with the investigation of factors influencing the movement patterns of a reactivated slow-moving landslide situated in the eastern Liguria region (NW Italy) through the analysis of extensive ground-based hydrological and geotechnical monitoring data. Subsurface horizontal displacement and pore water pressure data were acquired simultaneously by means of automatic sensors positioned at pre-existing and localized failure zones. The joint examination of field measurements enabled us to explore the connections between rain, pore water pressure, and displacements. The results of continuous displacement monitoring showed that the landslide kinematics involved phases of extremely slow movements alternated with periods of relative inactivity. Both stages occurred prevalently at seasonal scale displaying similar durations. The slow-motion phases took place at relatively constant pore water pressure and were ascribed to mechanisms of viscous shear displacements along failure surfaces. Inactive phases entailed no significant deformations, mostly corresponding to prolonged dry periods. The two motion patterns were interrupted by episodic sharp deformations triggered by delayed (preparation periods from 4 to 11 days) rainfall-induced pore water pressure peaks, which were ascribed to sliding mechanisms taking place through rigid-plastic frictional behaviour. During these deformation events, hysteresis relationships between pore water pressure and displacement were found, revealing far more complex hydro-mechanical behaviour. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
9. Monitoring Surface Deformations in a Fossil Landslide Zone and Identifying Potential Failure Mechanisms: A Case Study of Gümüşhane State Hospital.
- Author
-
Alemdag, Selçuk, Yalvaç, Sefa, Bjelotomić Oršulić, Olga, Kara, Osman, Zeybek, Halil İbrahim, Bostanci, Hasan Tahsin, and Markovinović, Danko
- Subjects
- *
GEODETIC techniques , *DEFORMATION of surfaces , *FINITE element method , *GLOBAL Positioning System , *STRUCTURAL health monitoring , *LANDSLIDES - Abstract
The escalating occurrence of landslides has drawn increasing attention from the scientific community, primarily driven by a combination of natural phenomena such as unpredictable seismic events, intensified precipitation, and rapid snowmelt attributable to climate fluctuations, compounded by inadequacies in engineering practices during site selection. Within the scope of this investigation, contemporary geodetic techniques using the GNSS were employed to monitor structural and surface deformations in and around a hospital edifice situated within an ancient fossil landslide region. Additionally, inclinometer measurements facilitated the determination of slip circle parameters. A subsequent analysis integrated these datasets to scrutinize both the hospital structure and its surrounding slopes. In addition to the finite element method, four different limit equilibrium methods (Bishop, GLE–Morgenstern–Price, Spencer, and Janbu) were used in the evaluation of stability. Since the safety number determined in all analyses was <1, it was determined that the slope containing the hospital building was unstable. The movement has occurred again due to the additional load created by the hospital building built on the currently stable slope, the effect of surface and groundwater, and the improperly designed road route. As a result of geodetic monitoring, it was determined that the sliding speed on the surface was in the N-E direction and was approximately 3 cm, and this situation almost coincided with inclinometer measurements. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
10. Centrifuge modeling test on reactivation of ancient landslide under sudden drop of reservoir water and rainfall.
- Author
-
Zhang, Qiang, Jia, Chaojun, Chen, Hongjie, Zheng, Yanni, and Cheng, Wei
- Subjects
- *
PORE water pressure , *RAINFALL simulators , *EARTH pressure , *RAINFALL , *LANDSLIDES , *INCLINOMETER - Abstract
During the normal operation of the Huangdeng Hydropower Station's reservoir, many tensile cracks were observed on the surface of the bank slope below the elevation of 1805 m along the highway, causing significant damage to local residents' production and lives. On-site geological investigation, surface and inclinometer displacement monitoring were carried out, and the deformation characteristics of the Cheyiping landslide were analyzed. A controllable intensity rainfall simulator and a reservoir water level variation simulation system were designed in our laboratory. The lower section of the highway along the river in Cheyiping small village was chosen as the prototype, and a centrifuge model test of the reactivation of the Cheyiping ancient landslide induced by rainfall and reservoir water level fluctuations was performed. The characteristics of landslide deformation, pore water pressure, and earth pressure variation under the influence of rainfall and reservoir water level changes are investigated. The thorough analysis revealed that, even if the sliding surface is not deep, the sudden drop in reservoir water level remains the primary controlling factor of slope sliding. Because the permeability of the deposit is low, rainfall has a minor impact on this ancient landslide. The experimental results can be used to guide slope prevention and reservoir management in the Huangdeng Reservoir area. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
11. Acquiring the High-Precision Spectrum of Track Irregularity by Integrating Inclination in Chord Methods: Mathematics, Simulation, and a Case Study.
- Author
-
Wang, Pengjiao, Guo, Fengqi, Zhang, Hong, Jin, Junhui, Liao, Qiaoyun, and Yan, Yongfeng
- Subjects
- *
PUBLIC transit , *INCLINOMETER , *SYSTEM dynamics , *COMPUTER simulation , *WAVELENGTHS - Abstract
Accurate measurement of track irregularity and the corresponding spectrum is essential for evaluating the performance of transportation systems. Chord measuring methods can achieve fine accuracy but are limited by waveform distortion and a restricted range of recoverable wavelength. To address this, this work explores the effectiveness of integrating inclination data in chord-based measurement to obtain a higher precision and more reliable spectrum. Firstly, the theoretical principles and mathematics of the proposed method are described. We demonstrate that by utilizing inclinometer sensors, the measuring reference can be maintained throughout the measurement, therefore obtaining an authentic waveform of track irregularity. Adaptive technics are employed to examine and extract cumulative components in the measured signal, which also benefits the accuracy of spectral estimation. Error analysis is then conducted by simulated sampling. Furthermore, a case study of field measurement and numerical simulation via multi-body dynamics for a monorail system is presented. The results verify the accuracy and robustness of the proposed method, showing that it provides a broader range of recoverable wavelength, minimum parametric interference, and advantages of signal authenticity. The simulation results prove the significant effects of track irregularity on the dynamic response of the monorail system, hence revealing the value of the presented methods and results. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
12. Inclinometer use in primary total hip arthroplasty does not improve acetabular component positioning: a non-randomized control trial.
- Author
-
Goldstein, Kyle, Tyndall, Wyatt, Nickol, Michaela E., and van der Merwe, Johannes M.
- Subjects
HIP joint radiography ,ACETABULUM surgery ,PEARSON correlation (Statistics) ,TOTAL hip replacement ,ACETABULUM (Anatomy) ,SURGERY ,PATIENTS ,BODY mass index ,T-test (Statistics) ,BIOPHYSICS ,CLINICAL trials ,TREATMENT effectiveness ,SURGICAL therapeutics ,CHI-squared test ,DESCRIPTIVE statistics ,INTRAOPERATIVE care ,JOINT dislocations ,ARTIFICIAL joints ,MEDICAL records ,ACQUISITION of data ,INTRACLASS correlation ,DATA analysis software ,RANGE of motion of joints ,SCIENTIFIC apparatus & instruments ,INTER-observer reliability ,REGRESSION analysis ,EVALUATION - Abstract
Introduction: Total hip arthroplasty (THA) is a common surgical procedure that aims to relieve pain, improve function, and increase mobility in patients with hip joint pathology. One of the most challenging aspects of THA is to determine the correct angle of the acetabular component's placement. Intraoperative inclinometers have emerged as a promising tool to obtain accurate measurements of the acetabular component's inclination. The primary objective of this study was to evaluate the accuracy and efficacy of using intraoperative inclinometers for THA. Methods: This non-randomized control trial evaluated patients undergoing primary THA. Patients in the inclinometer group had an inclinometer used intraoperatively to measure acetabular component inclination, and patients in the control group had no inclinometer. Inclination and anteversion of the acetabular component were measured on postoperative radiographs. Results: A total of 223 patients were included in the study. The mean inclination angle of the acetabular cup was significantly higher in the inclinometer group (43.9° vs. 41.5°, P < 0.001). This difference was not clinically significant. There was no significant difference in anteversion. There were no significant differences in the number of patients within the safe zones for inclination or anteversion, or in the number of patients experiencing a dislocation. No correlation was found between inclinometer measurement and measured acetabular component inclination. Inclinometer use and body mass index (BMI) were the sole statistically significant factors in determining acetabular component inclination. Conclusions: This study indicated no current benefit to inclinometer use during primary THA, as measured by inclination, anteversion, and dislocation rate. However, this might be confounded by subtle variations in patient positioning, which may be a strong area of study in the future. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
13. Hybrid Vibration Sensor for Equipment Monitoring and Diagnostics.
- Author
-
Bryakin, Ivan V., Bochkarev, Igor V., Khramshin, Vadim R., and Gasiyarov, Vadim R.
- Subjects
- *
GEOMAGNETISM , *DETECTORS , *ROTATIONAL motion , *INCLINOMETER , *MODE shapes - Abstract
Vibration diagnostics based on vibroacoustic signal data belong to the most common ways to monitor the technical condition of equipment and technical structures. The paper considers the general issues of vibration-based diagnostics and shows that in general, it is required to monitor both axial and torsional oscillations, as well as the inclination angle, occurring during the operation of various technical objects. To comprehensively monitor these parameters, a hybrid vibration sensor is proposed, simultaneously implementing three operating modes: recording linear displacements of the vibrating object; recording the rotation angle of the object at its torsional oscillations; recording the object angular deviation from the vertical component of the natural local geomagnetic field, i.e., the inclinometer mode. The proposed hybrid sensor design is described, and a theoretical analysis of the sensor's operation in each of the aforementioned operating modes is performed. The authors show that in the inclinometer mode the sensor actually operates as a fluxgate meter. Generalizing the results of the sensor's operation simultaneously in all three operating modes, an equation for the total output data signal has been obtained, which allows for obtaining the required information on the current values of linear displacements and rotation and inclination angles by selectively filtering it with respective three filters tuned to specific frequencies. The experimental studies of the proposed hybrid vibration sensor confirmed its ability to record various vibrational disturbances and changes in the inclination angle of the monitored object. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
14. Instrumental Monitoring of a Slow-Moving Landslide in Piedmont (Northwest Italy) for the Definition of Rainfall Thresholds.
- Author
-
Bonasera, Mauro, Taboni, Battista, Caselle, Chiara, Acquaotta, Fiorella, Fubelli, Giandomenico, Masciocco, Luciano, Bonetto, Sabrina Maria Rita, Ferrero, Anna Maria, and Umili, Gessica
- Subjects
- *
LANDSLIDES , *RAINFALL , *NATURAL disaster warning systems , *SYNTHETIC aperture radar , *GROUND motion , *GEOLOGICAL modeling , *LANDSLIDE prediction - Abstract
The prediction and prevention of landslide hazard is a challenging topic involving the assessment and quantitative evaluation of several elements: geological and geomorphological setting, rainfalls, and ground motion. This paper presents the multi-approach investigation of the Nevissano landslide (Asti Province, Piedmont, NW Italy). It shows a continuous and slow movement, alongside few paroxysmal events, the last recorded in 2016. The geological and geomorphological models were defined through a field survey. An inventory of the landslide's movements and rainfall records in the period 2000–2016 was performed, respectively, through archive investigations and the application of "Moving Sum of Daily Rainfall" method, allowing for the definition of rain thresholds for the landslide activation (105 mm and 193 mm, respectively, in 3 and 30 days prior to the event). The displacements over the last 8 years (2016–2023) were monitored through an innovative in-continuum monitoring inclinometric system and Earth Observation (EO) data (i.e., relying on Interferometric Synthetic Aperture Radar, or InSAR data): it gave the opportunity to validate the rainfall thresholds previously defined. This study aims to provide information to public authorities for the appropriate management of the site. Moreover, the proposed workflow could be adopted as a guideline for investigating similar situations. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
15. Diaphragm Wall Deformation Behavior and Inclinometer Data Analysis for Braced Deep Excavations.
- Author
-
Zhao, Huajing, Shen, Xiaoming, Jia, Pengjiao, and Zhou, Xiaoqi
- Subjects
- *
DIAPHRAGM walls , *INCLINOMETER , *EXCAVATION , *WATERLOGGING (Soils) , *DATA analysis , *BUILDING sites - Abstract
Concrete diaphragm walls (CDWs) are widely used as support for deep excavations in saturated soft soils with sensitive construction environments. The lateral deformation of the CDWs is typically measured by inclinometers cast in the wall. This paper discusses the evolution of the lateral deformation of the CDWs during deep excavation and the main sources of errors in inclinometer measurements. Furthermore, a correction method for the most influential errors is proposed. It is found that the multilevel supported CDWs generally experience three types of deformations during the excavation: cantilever, transition, and bulging. Accordingly, the joint error correction method for inclinometer readings can be operated efficiently to reprocess the monitored data, using total station measurement as a cross-reference. Based on the case studies of deep excavation projects located in Suzhou, China, the proposed error correction method has been demonstrated to perform satisfactorily and can assist in guiding key safety control decisions on construction sites. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
16. Assel 轧管机辗轧角测量方法及其工程应用.
- Author
-
刘 杰, 欧阳建, 穆 东, and 罗正川
- Abstract
Copyright of Steel Pipe is the property of Steel Pipe Magazine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
17. Understanding slow-moving landslide triggering processes using low-cost passive seismic and inclinometer monitoring
- Author
-
Fiolleau, Sylvain, Uhlemann, Sebastian, Wielandt, Stijn, and Dafflon, Baptiste
- Subjects
Earth Sciences ,Geophysics ,Urban landslide ,Monitoring ,Ambient seismic noise ,Inclinometer ,Geomatic Engineering ,Geochemistry & Geophysics ,Geoinformatics ,Environmental management - Abstract
Landslides are a major natural hazard, threatening communities and infrastructures worldwide. Mitigation of these hazards relies on understanding their causes and triggering processes, which critically depend on subsurface characteristics and their variations over time. In this study, we present a novel approach combining passive seismic and low-cost inclinometer monitoring methods to improve the understanding of landslide activation mechanisms and their controls. We evaluate the efficiency of this approach on a shallow, slow-moving landslide directly endangering a road bridge, a bridge that is part of an important emergency response route. Results show the value of combining the two approaches for observing and monitoring landslide hazards. Passive seismic monitoring captures the variation in soil properties (rigidity and density) over time by sensing the variations of the seismic wave velocity (dV/V and its associated correlation coefficient). At the same time, novel low-cost inclinometers are monitoring subsurface deformation (from millimetric to pluricentimetric scale) and temperature. Seismic precursors detected at the bottom sensor a few hours prior to the reactivation are followed by the reactivation of the landslide toe, releasing stresses in the top part that lead to the reactivation of the whole landslide. This reactivation occurs during an episode of heavy rainfall following a 7-month drought. Meanwhile, temperature monitoring enables us to track water infiltration and to highlight its role in the landslide mechanisms. Overall, the combination of the two monitoring methods shows promise for quantifying the sliding mechanisms of landslide reactivations and for designing landslide early warning systems.
- Published
- 2023
18. Numerical Analysis on the Performance of Anchored Diaphragm Walls for a Deep Excavation in Hanoi
- Author
-
Nguyen, Thanh Son, Nguyen, Quoc Khanh, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Duc Long, Phung, editor, and Dung, Nguyen Tien, editor
- Published
- 2024
- Full Text
- View/download PDF
19. Capacitive Tilt Micro-Sensor
- Author
-
Łuczak, Sergiusz, Zams, Maciej, Władziński, Michał, Pieńczuk, Paweł, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Ono, Yukinori, editor, and Kondoh, Jun, editor
- Published
- 2024
- Full Text
- View/download PDF
20. Geotechnical Monitoring of Deep Shoring Adjacent to Train Infrastructure
- Author
-
Szary, Jakub, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Krishna, A. Murali, editor, Banerjee, Subhadeep, editor, and Pitchumani, N. Kumar, editor
- Published
- 2024
- Full Text
- View/download PDF
21. Development of High-Temperature Resistant Inclinometers for Structural Displacement Acquisition of the Buildings Subjected to Fire
- Author
-
Li, Jinyu, Zhu, Shaojun, Ji, Wei, Li, Guo-Qiang, Wang, Yao, and Qi, Honghui
- Published
- 2024
- Full Text
- View/download PDF
22. Sagittal Pelvic Tilt Directly Influences the Ischiofemoral Space: A Cadaveric Study.
- Author
-
Spencer-Gardner, Luke, Nunley, Brandon, Gómez-Hoyos, Juan, Wells, Joel, and Khoury, Anthony N.
- Subjects
MEDICAL research ,HEALTH care industry ,ORTHOPEDICS ,INCLINOMETER ,FEMORACETABULAR impingement - Abstract
Background: Ischiofemoral impingement (IFI) is understood to be a pain generator in the deep gluteal space. Femoral position is known to influence the ischiofemoral space (IFS), but there has been no study examining the effect of sagittal pelvic tilt on the IFS. The purpose of this study was to determine whether changes in pelvic tilt in the sagittal plane lead to changes in the dimensions of the IFS. Materials and Methods: Five fresh frozen cadavers (10 hips) were used for this anatomic study. The specimens were skeletonized and placed in the prone position with the pelvis fixed to a custom-built hinged table. A digital inclinometer was used to tilt the pelvis −10°, 0°, and 10° simulating posterior, neutral, and anterior pelvic tilt, respectively. Digital calipers were used to measure the dimensions of the IFS in all three positions of sagittal pelvic tilt. Results: Changes in pelvic tilt resulted in significant changes in the dimensions of the IFS. Mean IFS dimensions measured 29.3±9.7 mm, 37.2±9.0 mm, and 24.3±9.2 mm in the neutral, anterior, and posterior pelvic tilt positions, respectively (P<.0001). Conclusion: Changes in sagittal pelvic tilt influence the dimensions of the IFS, with posterior pelvic tilt noted to significantly decrease the IFS when compared with neutral and anterior pelvic tilt. These findings suggest that further evaluation of sagittal spinopelvic balance in the etiology of symptomatic IFI may be warranted. [Orthopedics. 2024;47(3):167–171.] [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
23. Impact of Minimally Invasive Intra-Capsular Metatarsal Osteotomy on Plantar Pressure Decrease: A Cross-Sectional Study.
- Author
-
Fernández-Vizcaino, Carlos, Naranjo-Ruiz, Carmen, Fernández-Ehrling, Nadia, García-Vicente, Sergio, Nieto-García, Eduardo, and Ferrer-Torregrosa, Javier
- Subjects
- *
OSTEOTOMY , *CROSS-sectional method , *VISUAL analog scale , *METATARSALGIA , *INCLINOMETER - Abstract
Background: Metatarsalgia is a common pathology that is initially treated conservatively, but failure to do so requires surgery, such as the minimally invasive distal metatarsal osteotomy (DICMO). Methods: In this prospective study of 65 patients with primary metatarsalgia who underwent DICMO, plantar pressures, American Orthopaedic Foot and Ankle Society MetaTarsoPhalangeal-InterPhalangeal scale (AOFAS-MTP-IP) and Visual Analog Scale (VAS) were evaluated pre-operatively and post-operatively and there was a subgroup in which an inclinometer was used to observe the importance of the inclination of the osteotomy. Results: The results show a significant reduction in plantar pressures after DICMO surgery without overloading the adjacent radii, especially in the subgroup with an inclinometer to guide the osteotomy. The AOFAS-MTP-IP scale evidenced a marked improvement in metatarsal function and alignment with scores close to normal. The VAS scale showed a substantial decrease in pain after DICMO osteotomy. Conclusions: DICMO, with an inclinometer for a 45° osteotomy, proved to be a safe and effective procedure for primary metatarsalgia, although further comparative studies are needed to confirm its superiority. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
24. Shoulder Proprioception: A Review.
- Author
-
Fox, Jake A., Luther, Lauren, Epner, Eden, and LeClere, Lance
- Subjects
- *
GONIOMETERS , *PROPRIOCEPTION , *MUSCLE strength testing , *ROTATOR cuff , *SHOULDER joint , *MOTION capture (Human mechanics) , *SPORTS re-entry - Abstract
The purpose of this review is to provide a comprehensive resource for shoulder proprioception assessment and its integration into clinical decision making as well as targeted rehabilitation protocols. Data for this review were acquired from peer-reviewed articles from computerized online databases, namely PubMed and Medline, published between 1906 and 2021. The development of digital/smart phone goniometers can improve shoulder joint range of motion (ROM) measurements and demonstrate comparable measurement accuracy to the universal standard goniometer. The inclinometer offers a portable and cost-effective method for measuring shoulder joint angles and arcs of motion in the vertical plane. Two types of dynamometers, the computerized isokinetic machine and the handheld hydraulic dynamometer, are reliable tools for objective shoulder rotator cuff strength assessment. Motion analysis systems are highly advanced modalities that create three-dimensional models of motion arcs using a series of cameras and reflective beads, offering unparalleled precision in shoulder proprioception measurement; however, they require time-consuming calibration and skilled operators. Advancements in wearable devices and compact mobile technology such as iPhone applications may make three-dimensional motion analysis more affordable and practical for outpatient settings in the future. The complex interplay between proprioception and shoulder dysfunction is not fully understood; however, shoulder proprioception can likely both contribute to and be caused by shoulder pathology. In patients with rotator cuff tears, glenohumeral osteoarthritis, and shoulder instability, clinicians can track proprioception to understand a patient's disease progression or response to treatment. Finally, rehabilitation programs targeting shoulder proprioception have shown promising initial results in restoring function and returning athletes to play. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
25. Development of a standalone delivery sequence model for proton arc therapy.
- Author
-
Liu, Gang, Zhao, Lewei, Liu, Peilin, Yan, Di, Deraniyagala, Rohan, Stevens, Craig, Li, Xiaoqiang, and Ding, Xuanfeng
- Subjects
- *
PROTON therapy , *MEDICAL research personnel , *ELECTRIC arc , *PROTON beams , *INCLINOMETER , *TEST methods - Abstract
Background: Spot‐scanning proton arc (SPArc) has been drawing significant interests in recent years because of its capability of continuous proton irradiation during the gantry rotation. Previous studies demonstrated SPArc plans were delivered on a prototype of the DynamicARC solution, IBA ProteusONE. Purpose: We built a novel delivery sequence model through an independent experimental approach: the first SPArc delivery sequence model (DSMSPArc). Based on the model, we investigated SPArc treatment efficiency improvement in the routine proton clinical operation. Methods: SPArc test plans were generated and delivered on a prototype of the DynamicARC solution, IBA ProteusONE. An independent gantry inclinometer and the machine logfiles were used to derive the DSMSPArc. Seventeen SPArc plans were used to validate the model's accuracy independently. Two random clinical operation dates (6th January and 22nd March, 2021) from a single‐room proton therapy center (PTC) were selected to quantitatively assess the improvement of treatment efficiency compared to the IMPT. Results: The difference between the logfile and DSMSPArc is about 3.2 ± 4.8%. SPArc reduced 58.1% of the average treatment delivery time per patient compared to IMPT (p < 0.01). Daily treatment throughput could be increased by 30% using SPArc using a single‐room proton therapy system. Conclusions: The first model of dynamic arc therapy is established in this study through an independent experimental approach using logfiles and measurements which allows clinical users and investigators to simulate the dynamic treatment delivery and assess the daily treatment throughput improvement. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
26. 双矢量定姿在煤矿掘进机姿态测量中的应用.
- Author
-
徐叶倩, 黄喆, 沈小玲, 赵世艺, 李佳雄, and 王浩森
- Abstract
In view of the problems of high-cost and accumulation of errors in the existing attitude measurement methods of roadheader, an attitude measurement algorithm based on the principle of double-vector attitude determination is proposed. By constructing and sensing the gravity-vector and light-vector respectively in the roadway excavation environment, using inertial inclination measurement and binocular vision measurement techniques, the attitude of the roadheader carrier coordinate frame relative to the roadway navigation coordinate frame can be realized based on the mathematical expression of vector elements in the navigation coordinate frame and the roadheader carrier coordinate frame. A measuring device that consists of an inclinometer and a binocular camera measures the indicated laser and gravity-vectors, and then the attitude of the roadheader can be solved using the double-vector attitude determination algorithm. The static repeatability measurement experiment is designed, and the experimental results show that the repeatability measurement precision of the attitude angles is 0.066 2°. The simulation analysis of the errors that may be introduced using the Monte Carlo method, which shows that the effect of the errors on the yaw, pitch and roll angles are 0.786 4°, 0.454 8° and 0.476 5°, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
27. Effects of muscle energy techniques versus corrective exercise programme on pain, range of motion and function in patients with upper cross syndrome: a randomised clinical trial.
- Author
-
Hanif, Arooj, Ahmad, Ashfaq, Arslan, Syed Asad Ullah, Asghar, Momna, Zaheer, Anna, and Shafiq, Hira
- Subjects
SHOULDER girdle ,PHYSICAL therapy ,INCLINOMETER ,SPORTS medicine ,SHOULDER joint range of motion - Abstract
Introduction. Upper crossed syndrome (UCS) is a common musculoskeletal issue that includes the dysfunctional tone of the muscles in the shoulder girdle or cervicothoracic region. The objective of the current study is to compare the effects of muscle energy techniques with the National Academy of Sports Medicine-based exercise protocol on pain, range of motion, and disability in patients with UCS. Methods. it was a single-blinded randomised clinical trial carried out in the Physiotherapy department of the University of Lahore Teaching Hospital, Pakistan. Fifty patients with upper cross syndrome aged between 20 to 35 years were randomly allocated into two groups: group A (routine physical therapy combined with muscle energy techniques) and group B (routine physical therapy combined with the National Academy of Sports Medicine-based exercise protocol) for three sessions per week for total 8 weeks. data were collected at baseline, 4th, 8th, and 12th week for assessing the long-term effects of the treatment protocol as well. The Visual Analogue Scale, Neck disability index, and an inclinometer were used to measure the pain, disability, and range of motion of the cervical region, respectively. The data was analysed using SPSS version 23.0 (iBM, New York, USA). Results. out of 50 participants, 30 were male and 20 were female. The mean age of all the participants in experimental group A was 29.76 ± 2.89 and that in experimental group B was 30.56 ± 2.48. At the 4th, 8th, and 12th week, pain and disability were significantly (p-value < 0.05) reduced and cervical range of motion was significantly (p-value < 0.05) improved within both groups. After 8 weeks of treatment, a significant between-group difference was seen in favour of group A in terms of cervical range of motions (flexion, extension, rotation, and side bending) with p-values of less than 0.05 and in favour of group B in terms of pain (p-value 0.03) and disability (p-value 0.04) was seen. These differences were maintained at the 12th week follow-up as well. Conclusions. This study concluded that both NASM (National Academy of Sports Medicine-based exercise protocol) and METs (muscle energy techniques) are effective treatment options for people with upper cross syndrome. it was also concluded that METs are more effective in improving Range of motion (RoM), while the NASM-based exercise protocol is more effective in improving symptoms of pain and neck-related disability. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
28. Landslide monitoring based on GNSS and automated inclinometer systems and dynamic modeling using SPH: a case study in Qinghai, China.
- Author
-
Hu, Man, Ren, Yi, Xiao, Leyuan, Liu, Xiangyu, Tan, Qiuting, Han, Hongju, and Guo, Jiping
- Subjects
LANDSLIDES ,GLOBAL Positioning System ,HAZARD mitigation ,NATURAL disaster warning systems ,DYNAMICAL systems ,EMERGENCY management ,DEBRIS avalanches ,INCLINOMETER - Abstract
Landslide deformation monitoring is crucial for early warning and disaster prevention. This study presents a comprehensive landslide monitoring approach using global navigation satellite systems (GNSS) and automated inclinometers through a case study in Qinghai, China. Numerical modeling utilizing smoothed particle hydrodynamics (SPH) predicted potential hazards from dynamic landslide movements. The results demonstrate that the combination of GNSS and automated inclinometer systems provides accurate and real-time data on landslide movements, enabling timely responses to mitigate the risks associated with landslides. Monitoring results demonstrate active deformation of Zone III with sliding velocities up to 2.5 mm/day and deep subsurface displacement along bedrock shear planes at 14–26 m depths. SPH simulations predict a maximum run out of 115 m over 50 s for potential slope failure under a Ms 7.0 earthquake, with debris flows capable of blocking the river channel and inducing secondary hazards. Additionally, the numerical modeling using SPH provides useful insights into the potential hazard of landslides, which can be used to develop more effective mitigation strategies in the future. The findings of this study contribute to the development of a more holistic and effective approach to landslide monitoring and management. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
29. Thoracic Spine Mobility and Posture: Correlation and Predictive Values in Physically Independent Older Adults.
- Author
-
de Sousa Almeida, Ana Paula, Matsui, Edine Kavano Kitahara, da Silva, Fabio Nascimento, de Oliveira Vasconcelos, Fernanda Borges, and de Oliveira, Márcio Rogério
- Abstract
The posture undergoes changes during aging and may serve as a marker for the evaluation of the thoracic spine. This study aimed to correlate the variables for the evaluation of thoracic spine mobility and propose predictive equation models from the measurements of the thoracic Schober test and the digital inclinometer in older adults. The mobility of thoracic flexion and extension by levels (T1, T8 and T12) of 41 older adult subjects (66 ± 7 years) was quantified with a digital inclinometer (degrees) and Schober's test (cm). There was a moderate positive correlation between the digital inclinometer and the Schober test at T1 (r =.69), T12 (r =.60), and total flexion levels T1 to T12 (r =.74). Simple linear regression equations showed that thoracic Schober predicts thoracic mobility measures for these same levels. Moderate to strong correlations were observed between the inclinometer and the Schober Test measurements. The development of predictive equation models based on the thoracic Schober test could potentially enhance the ability to predict spinal mobility in physically independent older adults. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
30. Comparison of Lower Extremity Alignment among Taekwondo Athletes of Various Subdisciplines.
- Author
-
Han, Mi-ock, Chang, Eun-wook, and Jun, Hyung-pil
- Subjects
TAE kwon do ,ATHLETES ,KNEE ,INCLINOMETER ,BOXING - Abstract
Background and Objectives: Studies analyzing lower extremity alignment (LEA) LEA among taekwondo subdisciplines athletes are lacking. This study compared LEA in the dominant and nondominant legs intaekwondo athletes. Materials and Methods: Twelve measurements of LEA were analyzed for 157 athletes (63 sparring, 50 demonstration, and 44 poomsae athletes) registered with the Korea Taekwondo Association. LEA was measured in the standing, supine, and prone positions using alignment application, a goniometer, a bubble inclinometer, a height gage, and a palpation meter. Results: The analysis revealed that the dominant leg of poomsae athletes showed greater genu valgum alignment than that of sparring athletes (p < 0.01), whereas the dominant leg of sparring athletes showed greater rearfoot varum alignment than that of demonstration athletes (p < 0.01). Furthermore, the nondominant leg of poomsae athletes showed greater genu valgum alignment than that of sparring and demonstration athletes (p < 0.01), whereas the nondominant leg of sparring athletes showed greater rearfoot varum alignment than that of demonstration athletes (p < 0.01). In addition, demonstration athletes had better forefoot varus alignment than poomsae athletes (p < 0.01). Conclusions: This study revealed that LEA characteristics vary among taekwondo athletes according to their subdiscipline. The results of this study would help in designing training programs tailored to each subdiscipline that would best address their LEA characteristics and help to prevent injuries. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
31. Improving the Accuracy of Metatarsal Osteotomies in Minimally Invasive Foot Surgery Using a Digital Inclinometer: Preliminary Study.
- Author
-
Fernández-Vizcaino, Carlos, Nieto-García, Eduardo, Fernández-Ehrling, Nadia, and Ferrer-Torregrosa, Javier
- Subjects
- *
FOOT , *MINIMALLY invasive procedures , *METATARSUS , *INCLINOMETER - Abstract
Minimally invasive foot surgery (MIS) has become a common procedure to treat various pathologies, and accuracy in the angle of metatarsal osteotomies is crucial to ensure optimal results. This randomized controlled trial with 37 patients investigates whether the implementation of a digital inclinometer can improve the accuracy of osteotomies compared to traditional freehand techniques. Patients were randomly allocated to group A (n = 15) receiving inclinometer-assisted surgery or group B (n = 22) receiving conventional surgery. Osteotomies were performed and outcomes were evaluated using an inclinometer. The inclinometer group showed a significant decrease in plantar pressure from 684.1 g/cm2 pretreatment to 449.5 g/cm2 post-treatment (p < 0.001, Cohen's d = 5.477). The control group decreased from 584.5 g/cm2 to 521.5 g/cm2 (p = 0.001, Cohen's d = 0.801). The effect size between groups was large (Cohen's d = −2.572, p < 0.001). The findings indicate a significant improvement in accuracy and reduction in outliers when using an inclinometer, suggesting that this technology has the potential to improve surgical practice and patient outcomes in minimally invasive metatarsal osteotomies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
32. Measuring Table Tilts-Trigonometry and Electronics.
- Author
-
J., Geetha, M., Andrews, and Srinandhini, S.
- Subjects
- *
ORTHOSTATIC intolerance , *MATHEMATICAL formulas , *TILT-table test , *INCLINOMETER , *TRIGONOMETRY - Abstract
INTRODUCTION The main purpose of tilt table testing (TTT) is to determine the underlying cause of orthostatic intolerance, near-fainting episodes, and unexplained syncope. The aim of present study is to measure table tilt using trigonometry and electronic medium. MATERIAL AND METHODS The present prospective study was done among 25 patients undergoing pelvic surgery at tertiary care centre during the study period of one year. Inclinometer, bubble app and mathematical formula were used to measure the tilt. Results were analyzed using SPSS version 25.0. RESULTS The mean age of patients in our study was 37.8±5.9 years. The Mean ± SD angle measured by three methods were 13.1±2.8 degree by inclinometer, 13.2±2.6 degree by bubble app and 13.1±2.6 degree by mathematical formula and results were significant with p value .000. CONCLUSION All the three methods were easy to use and were efficient in measuring table tilt with almost same results. [ABSTRACT FROM AUTHOR]
- Published
- 2024
33. Enhancing the Accuracy of Low-Cost Inclinometers with Artificial Intelligence.
- Author
-
Lozano, Fidel, Emadi, Seyyedbehrad, Komarizadehasl, Seyedmilad, Arteaga, Jesús González, and Xia, Ye
- Subjects
INCLINOMETER ,ARTIFICIAL intelligence ,STRUCTURAL health monitoring ,MEASURING instruments ,STEEL framing - Abstract
The development of low-cost structural and environmental sensors has sparked a transformation across numerous fields, offering cost-effective solutions for monitoring infrastructures and buildings. However, the affordability of these solutions often comes at the expense of accuracy. To enhance precision, the LARA (Low-cost Adaptable Reliable Anglemeter) system averaged the measurements of a set of five different accelerometers working as inclinometers. However, it is worth noting that LARA's sensitivity still falls considerably short of that achieved by other high-accuracy commercial solutions. There are no works presented in the literature to enhance the accuracy, precision, and resolution of low-cost inclinometers using artificial intelligence (AI) tools for measuring structural deformation. To fill these gaps, artificial intelligence (AI) techniques are used to elevate the precision of the LARA system working as an inclinometer. The proposed AI-driven tool uses Multilayer Perceptron (MLP) to glean insight from high-accuracy devices' responses. The efficacy and practicality of the proposed tools are substantiated through the structural and environmental monitoring of a real steel frame located in Cuenca, Spain. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
34. Research and application of a flexible measuring array for deep displacement of landslides.
- Author
-
Li, Yang, Li, Zhong, Guo, Qifeng, Liu, Yimin, and Zhang, Daji
- Subjects
- *
EMERGENCY management , *COAXIAL cables , *MAGNETIC sensors , *MAGNETIC fields , *INCLINOMETER - Abstract
The multidimensional and multi-sliding surface measurement of deep-seated displacement on landslides poses a significant technical challenge in landslide monitoring and early warning. The fixed-borehole inclinometer serves as an important measurement method based on drilling for this purpose. In this study, a novel flexible measurement array for deep-seated landslide displacement and its installation and measurement processes were developed, enabling higher accuracy in full-hole multidimensional deformation measurement. The measurement array consists of individual measurement probes as basic units, connected in series through coaxial cables and high-pressure rubber hoses, forming a flexible measurement array. Each probe is equipped with acceleration and magnetic field sensors, allowing for the measurement of borehole inclination and azimuth angles and providing a more comprehensive understanding of the deformation of deep-seated landslides. This flexible measurement array resolves the limitations of traditional fixed inclinometers, such as limited probe quantity or inaccurate installation positions that fail to reflect the deformation trend of the landslide body. Moreover, it eliminates the need for auxiliary installation accessories like pulleys and inclinometer pipes, simplifying the mechanical structure and installation process, which represents an advancement in methodology and an improvement in measurement techniques. This array provides a more comprehensive and improved monitoring tool for disaster prevention and mitigation, thereby enhancing the level of geological hazard monitoring and early warning technology. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
35. Comparative Analysis of Measurement Results with Data and Platform Inclinometers at the North Caspian Field.
- Author
-
Kuzmin, Yu. O., Kuzmin, D. K., and Fattakhov, E. A.
- Subjects
- *
INCLINOMETER , *COMPARATIVE studies , *POROELASTICITY , *GLOBAL Positioning System , *GEOPHONE , *DATA analysis , *OCEAN bottom - Abstract
The article presents the results of a detailed spatiotemporal comparative analysis of the data obtained by platform and bottom inclinometers at the V. Filanovsky field. The slope spectra obtained by the platform inclinometers fundamentally do not coincide with the data of the bottom sensors. It turned out that platform inclinometers effectively detect exogenic deformation effects and hardly identify deformations of the seabed associated with field development processes. Using the geomechanical poroelastic inclusion model, the authors mathematically modeled the spatial distribution of the seabed slopes during a period of intensive water injection into the developed reservoir. The proposed model shows that only the system of bottom inclinometers is a geodynamic monitoring element. It is concluded that sensor systems installed only on the platforms themselves (accelerometers, inclinometers, GNSS) do not pertain to geodynamic monitoring systems (geodynamic survey areas) and cannot ensure safe and rational subsurface use. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
36. A novel rapid measurement method of cervical sagittal parameters based on the integrated inclinometer of a smartphone: a validity and reliability study.
- Author
-
Huang, Tianji, Zhang, Chunyang, Han, Zhenghan, Zhong, Weiyang, Zhao, Zenghui, Zhu, Yong, Luo, Xiaoji, and Zhang, Jie
- Subjects
PICTURE archiving & communication systems ,INCLINOMETER ,SMARTPHONES ,INTER-observer reliability ,CERVICAL vertebrae ,SAGITTAL curve - Abstract
Objectives: A new method was introduced using a smartphone's integrated inclinometer for rapid measurement of sagittal cervical parameters. The present study aims to compare the validity and reliability of the proposed method. Methods: We retrospectively reviewed 120 patients with cervical spondylosis treated at our hospital. The C0-2 Cobb angle, C2-7 Cobb angle, T1-slope (T1S), and neck tilt (NT) were selected as representative sagittal angles for this study. Two methods, the smartphone's integrated inclinometer and picture archiving and communication system (PACS), were used to measure these four representative angles. Validity, reliability, and measurement times were recorded and compared. Results: The representative parameters (C0-2 Cobb angle, C2-7 Cobb angle, T1S, and NT), the ICC was 0.957 (0.939–0.970), 0.971 (0.958–0.979), 0.974 (0.963–0.982) and 0.949 (0.927–0.964) for validity respectively. For the aforementioned representative parameters, the ICC values were 0.972 (0.960–0.980), 0.979 (0.969–0.985), 0.972 (0.959–0.980), 0.942 (0.917–0.959) for intraobserver reliability respectively. For the representative parameters mentioned above, the ICC values were 0.947 (0.926–0.963), 0.964 (0.949–0.975), 0.956 (0.938-0.969), 0.916 (0.881–0.940) for interobserver reliability respectively. For the validity of the representative parameters mentioned above, the Bland-Altman plot displayed a mean difference of 0.2, 0.1, 0.1, and 0.4°with a 95% CI of 4.3, 4.5, 3.4, and 4.1°, respectively. The measurement by smartphone's integrated inclinometer (46.31 ± 3.99 s) was significantly quicker than that by PACS (69.48 ± 3.25 s) according to independent-samples T test (p < 0.001). Conclusion: This novel smartphone measurement based on the integrated inclinometer is accurate and reliable for measuring cervical sagittal parameters rapidly and conveniently. Sagittal parameters of the cervical spine have been widely applied in many types of spinal disorders for disease diagnosis, assessment, classification, treatment choice, and follow-up, so accurate, rapid, and convenient measurement of cervical sagittal parameters is important. Traditional measurement of sagittal parameters of the cervical spine have their own disadvantages. This novel smartphone measurement based on the integrated inclinometer is accurate and reliable for measuring cervical sagittal parameters rapidly and conveniently. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
37. Deformation Field Analysis of Small-Scale Model Experiment on Overtopping Failure of Embankment Dams.
- Author
-
Lu, Qiang, Gu, Yanchang, Wang, Shijun, Liu, Xiandong, and Wang, Hong
- Subjects
EARTH dams ,DAM failures ,DISPLACEMENT (Mechanics) ,DAMS ,PUBLIC safety ,INCLINOMETER - Abstract
There are a large number of reservoir dams in China, of which embankment dams account for more than 90%, and public safety will be seriously endangered in case of dam failure. Overtopping is the leading cause of dam failure, and the existing research mainly focuses on the study of the failure process, with less research on the change in the deformation field during the failure process. In this study, the measured deformation field data of a modeled embankment dam during the whole process of impoundment, operation, and failure were obtained by carrying out indoor small-scale model experiments of overtopping failure, embedding inclinometers inside the dam body, and setting vertical displacement measurement markers on the surface. A refined analysis of the measured deformation data shows that the dam body displaces vertically downward during the impoundment stage and the vertical displacement at the dam crest has the largest amplitude; the internal horizontal displacement changes to the left bank and downstream side, and the amplitude of the internal horizontal displacement (upstream and downstream direction and dam axis direction) on the right dam sections is more significant than that in the middle of the dam; during the breaching stage, the time sequence of the sudden change in each internal horizontal displacement measuring point is from the downstream side to the upstream side and from the higher elevation to the lower elevation, which is basically consistent with the process of overtopping of embankment dams; and the overall sudden change in left and right bank horizontal displacements within the downstream side of the dam crest and the downstream side of the dam body gauges is significant, and the sudden change in upstream and downstream horizontal displacement (U&D HD) within the downstream side of the dam crest gauges is significant. The experimental analysis results can support the disaster mechanism of embankment dam failure and the theory of early warning of failure. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
38. State analysis of the inclinometer tube for monitoring relative slippage between backfill and surrounding rock mass.
- Author
-
Chen, Dapeng, Yin, Shenghua, Yan, Rongfu, Zhou, Yun, Zhang, Yufei, and Wang, Leiming
- Subjects
- *
INCLINOMETER , *FINITE element method , *ELASTIC foundations - Abstract
This paper presents a methodology for analysing the state of an inclinometer tube used for in-situ monitoring of the relative slide between backfill and surrounding rock mass, based on the principles of elastic beam and elastic foundation beam theory. Through the utilisation of this approach, it becomes feasible to evaluate the appropriate depth for installation, the extent of measurement, and the operational state of the inclinometer tube. The mechanical response of the inclinometer tube was analysed using the new method and finite element method, with Longshou Mine serving as the background. The feasibility of the new method was subsequently confirmed. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
39. PROVIDING STABILITY TO A HIGHWAY CUT IN A LANDSLIDE AREA WITH THE USE OF DIAPHRAGM WALL PANELS.
- Author
-
Fišer, Zdeněk, Kopecký, Miloslav, and Ondrášik, Martin
- Subjects
- *
DIAPHRAGM walls , *LANDSLIDES , *CONCRETE walls , *INCLINOMETER , *SLOPE stability - Abstract
The route of the D1 highway in the Lietavská Lúčka - Dubná Skala section near Žilina is taken forward by a 17m deep cut in a section about 300m long. The first proposed solution of the highway route was based on the assumption that it is a stable area. However, during the construction of the highway cut an old landslide area with a depth of shear surfaces of up to 25m was identified right in the area of the cut. Therefore, massive measures had to be designated to assure that the area above the highway and the access to the tunnel portal were not threatened by landslides. When addressing the security of the cut, an unusual solution was used - anchored diaphragm wall panels of underground concrete walling oriented towards the slope. Currently, this given solution is under construction and is controlled by inclinometers incorporated into selected diaphragm wall panels. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
40. Applied Bayesian structural health monitoring: Inclinometer data anomaly detection and forecasting.
- Author
-
Green, David K. E. and Jaspan, Adam
- Subjects
- *
STRUCTURAL health monitoring , *INCLINOMETER , *FORECASTING , *INTRUSION detection systems (Computer security) , *STRUCTURAL engineering , *MARKOV processes , *DECISION making - Abstract
Inclinometer probes are devices that can be used to measure deformations within earthwork slopes. This paper demonstrates a novel application of Bayesian techniques to real‐world inclinometer data, providing both anomaly detection and forecasting. Specifically, this paper details an analysis of data collected from across the entire UK rail network. Inclinometers are a standard tool of geotechnical site monitoring. Data from these instruments is often used in risk analysis and decision‐making. However, discerning anomalous data points and forecasting future behaviour from inclinometer data requires significant 'engineering judgement' (subjective appraisal). This is because the observational data is derived from complex physical phenomena and contains complex spatio‐temporal correlations. Additionally, the practical demands of data collected from remote sites over several years tends to introduce systematic errors. These issues make the interpretation of inclinometer data challenging. Practitioners have effectively two goals when processing monitoring data. The first is to identify any anomalous or dangerous movements, and the second is to predict potential future adverse scenarios by forecasting. In this paper we apply Uncertainty Quantification (UQ) techniques by implementing a Bayesian approach to anomaly detection and forecasting for inclinometer data. Subsequently, both costs and risks may be minimised by quantifying and evaluating the appropriate uncertainties. This framework may then act as an enabler for enhanced decision making and risk analysis. We show that inclinometer data can be described by a latent autocorrelated Markov process derived from measurements. This can be used as the transition model of a non‐linear Bayesian filter. This allows for the prediction of system states. This learnt latent model also allows for the detection of anomalies: observations that are far from their expected value may be considered to have 'high surprisal', that is they have a high information content relative to the model encoding represented by the learnt latent model. We successfully apply the forecasting and anomaly detection techniques to a large real‐world data set in a computationally efficient manner. Although this paper studies inclinometers in particular, the techniques are broadly applicable to all areas of engineering UQ and Structural Health Monitoring (SHM). [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
41. A New Methodology-Based Sensorial System with Which to Determine the Volume of Liquid Contained in a Cylindrical Tank Subjected to Full Variations in Its Orientation.
- Author
-
del Horno, Leticia, Segura, Eva, Somolinos, José A., and Morales, Rafael
- Subjects
CAPACITIVE sensors ,INDUSTRIAL robots ,LIQUIDS ,SUBMERGED structures ,INCLINOMETER ,STEEL tanks - Abstract
It is necessary to determine the volume of water contained in a tank for a wide range of applications, such as the automation and monitoring of industrial operations. In the context of the marine industry, the aforementioned information plays a vital role in the effective management of submerged devices, specifically in relation to their depths and/or inclinations. In these cases, it is not feasible to quantify the volume of liquid in a tank by means of direct measurements, owing to the fact that devices can be subjected to changes in their orientation. This variation in inclination could have a variety of causes, such as the implementation of automated emersion–immersion maneuvers in a TEC or variations in depth in an AUV. Nevertheless, it can be deduced by considering the level of the tank and its geometric properties. This paper presents a new methodology-based sensorial system (composed of three capacitive sensors and an inclinometer) for accurate determination of the volume of a liquid contained within a cylindrical tank subjected to full variations in its orientation. The effectiveness of the proposed methodology-based sensorial system has been verified by the results obtained from experiments conducted on a laboratory platform, thus demonstrating the high reliability of the model experiment and the relative errors study carried out. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
42. Investigation on fiber optic inclinometer for inclination measurement based on SMS fiber.
- Author
-
Bayuwati, D., Mulyanto, I., Suryadi, Setiono, A., and Widiyatmoko, B.
- Subjects
- *
SEMICONDUCTOR lasers , *INCLINOMETER , *SINGLE-mode optical fibers , *FIBERS , *ELECTROMAGNETIC interference , *FIBER testing - Abstract
The single-mode-multimode-single-mode (SMS) fiber devices has been known as promising sensor devices and used modal interference among guided modes of the multimode fiber in its operation, with basic advantages such as its simple structure, immunity to electromagnetic interference (EMI) and ease of fabrication. The SMS fiber structure consists of a length of multimode fiber which is spliced between two single-mode fibers. This paper describes the investigation on fiber optic inclinometer for slope measurement based on SMS fiber. The inclinometer consists of a diode laser at wavelength of 1310 nm which is launched to the SM fiber, SMS fiber structure, housing system, light detection system and output display. The power output changes when there is a slope of sensor housing because the SMS fiber sensor experiences a macro bending effect and the magnitude of the change in power is proportional to the value of the slope. The SMS fiber sensor calibration test and the SMS fiber inclinometer performance test have been performed by measuring the change in light output for a series of slope variations imposed on the sensor. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
43. A testbed for heliostat facets alignment by target reflection.
- Author
-
Lozano-Cancelas, Adrián, Gómez, Carlos M., Morales-Sánchez, Rodrigo, Sánchez-González, Alberto, and Castillo, José Carlos
- Subjects
- *
HELIOSTATS , *INCLINOMETER , *MICROMETERS , *SCREWS , *LASERS - Abstract
This work describes a lab-scale testbed designed and built to assess a heliostat canting detection technique based on target reflection. The installation consists of two structures supporting; 1) target facet and camera, and 2) object facet. The testbed integrates a high-resolution camera connected to a computer to detect canting errors. Other equipment includes a laser alignment system, micrometer screws for canting adjustment, and an inclinometer for camera levelling. Additionally, the testbed incorporates a wireless camera control system to remotely adjust the camera zooming and focusing via a web interface. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
44. Monitoring Surface Deformations in a Fossil Landslide Zone and Identifying Potential Failure Mechanisms: A Case Study of Gümüşhane State Hospital
- Author
-
Selçuk Alemdag, Sefa Yalvaç, Olga Bjelotomić Oršulić, Osman Kara, Halil İbrahim Zeybek, Hasan Tahsin Bostanci, and Danko Markovinović
- Subjects
landslide ,LE and FEM-SSR methods ,inclinometer ,geodetic monitoring ,GNSS ,Chemical technology ,TP1-1185 - Abstract
The escalating occurrence of landslides has drawn increasing attention from the scientific community, primarily driven by a combination of natural phenomena such as unpredictable seismic events, intensified precipitation, and rapid snowmelt attributable to climate fluctuations, compounded by inadequacies in engineering practices during site selection. Within the scope of this investigation, contemporary geodetic techniques using the GNSS were employed to monitor structural and surface deformations in and around a hospital edifice situated within an ancient fossil landslide region. Additionally, inclinometer measurements facilitated the determination of slip circle parameters. A subsequent analysis integrated these datasets to scrutinize both the hospital structure and its surrounding slopes. In addition to the finite element method, four different limit equilibrium methods (Bishop, GLE–Morgenstern–Price, Spencer, and Janbu) were used in the evaluation of stability. Since the safety number determined in all analyses was
- Published
- 2024
- Full Text
- View/download PDF
45. Types of Instruments
- Author
-
Bo, Myint Win, Barrett, Jeffrey, Bo, Myint Win, and Barrett, Jeffrey
- Published
- 2023
- Full Text
- View/download PDF
46. Ankle Joint Range of Motion Evaluation (ROM) Using Smartphone Calculators
- Author
-
Quaranta, Marco, Oliva, Francesco, Maffulli, Nicola, Lane, John G., editor, Gobbi, Alberto, editor, Espregueira-Mendes, João, editor, Kaleka, Camila Cohen, editor, and Adachi, Nobuo, editor
- Published
- 2023
- Full Text
- View/download PDF
47. Slope Inclinometers: Qualitative Evaluation of Probe Inclinometer Data—An Update
- Author
-
Coimbra, Luís, Salgado, Francisco, Meixedo, João Paulo, Pisello, Anna Laura, Editorial Board Member, Hawkes, Dean, Editorial Board Member, Bougdah, Hocine, Editorial Board Member, Rosso, Federica, Editorial Board Member, Abdalla, Hassan, Editorial Board Member, Boemi, Sofia-Natalia, Editorial Board Member, Mohareb, Nabil, Editorial Board Member, Mesbah Elkaffas, Saleh, Editorial Board Member, Bozonnet, Emmanuel, Editorial Board Member, Pignatta, Gloria, Editorial Board Member, Mahgoub, Yasser, Editorial Board Member, De Bonis, Luciano, Editorial Board Member, Kostopoulou, Stella, Editorial Board Member, Pradhan, Biswajeet, Editorial Board Member, Abdul Mannan, Md., Editorial Board Member, Alalouch, Chaham, Editorial Board Member, O. Gawad, Iman, Editorial Board Member, Nayyar, Anand, Editorial Board Member, Amer, Mourad, Series Editor, Chaminé, Helder I., editor, and Fernandes, José Augusto, editor
- Published
- 2023
- Full Text
- View/download PDF
48. 3D Dynamic Problems for Three-Layered Shells with Delamination Between the Layers
- Author
-
Aghalovyan, Lenser, Ghulghazaryan, Lusine, Hambardzumyan, Parandzem, Öchsner, Andreas, Series Editor, da Silva, Lucas F. M., Series Editor, Altenbach, Holm, Series Editor, Prikazchikov, Danila, editor, and Nobili, Andrea, editor
- Published
- 2023
- Full Text
- View/download PDF
49. Monitoring of Hydraulic Structure: Problem and Approach
- Author
-
Kühne, Charly, Stephan, Christoph, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Rizzo, Piervincenzo, editor, and Milazzo, Alberto, editor
- Published
- 2023
- Full Text
- View/download PDF
50. Validity and Reliability of Inertial Measurement Units in Active Range of Motion Assessment in the Hip Joint.
- Author
-
Stołowski, Łukasz, Niedziela, Maciej, Lubiatowski, Bartłomiej, Lubiatowski, Przemysław, and Piontek, Tomasz
- Subjects
- *
RANGE of motion of joints , *HIP joint , *UNITS of measurement , *INTRACLASS correlation , *BLAND-Altman plot , *INCLINOMETER - Abstract
Measuring joint range of motion has traditionally occurred with a universal goniometer, inclinometer, or expensive laboratory systems. The popularity of the inertial measurement unit (IMU) is growing, enabling the small and even single portable device to measure the range of motion. Until now, they were not used to assess hip joint range of motion. Our study aimed to check the validity of IMUs in assessing hip range of motion and compare them to other measurement devices—universal goniometer and inclinometer. Twenty participants completed three hip movements (flexion in standing and prone internal and external rotation) on both hips. Two testers independently assessed each movement with a goniometer, digital inclinometer, and IMU at different time points. To assess the agreement of active hip ROM between devices, Intraclass Correlation Coefficient (ICC) and Bland–Altman analysis were used. Furthermore, inter-rater and intra-rater reliability were also assessed by using ICC and Bland–Altman analysis. Limits of agreement (LOA) were calculated using Bland–Altman plots. The IMU demonstrated good to excellent validity (ICC: 0.87–0.99) compared to the goniometer and digital inclinometer, with LOAs < 9°, across all tested movements. Intra-rater reliability was excellent for all devices (ICC: 0.87–0.99) with LOAs < 7°. However, inter-rater reliability was moderate for flexion (ICC: 0.58–0.59, LOAs < 22.4) and poor for rotations (ICC: −0.33–0.04, LOAs < 7.8°). The present study shows that a single inertial measurement unit (RSQ Motion, RSQ Technologies, Poznan, Poland) could be successfully used to assess the active hip range of motion in healthy subjects, comparable to other methods accuracy. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.