scholarly journals Pattern recognition control of multifunction myoelectric prostheses by patients with congenital transradial limb defects: a preliminary study

2011 ◽  
Vol 35 (4) ◽  
pp. 395-401 ◽  
Author(s):  
Michael Kryger ◽  
Aimee E Schultz ◽  
Todd Kuiken
Keyword(s):  
Pattern Recognition ◽  
Success Factors ◽  
Performance Metrics ◽  
Cross Sectional Study ◽  
Residual Limb ◽  
Cross Sectional ◽  
Linear Discriminant ◽  
Myoelectric Prostheses ◽  
Preliminary Study ◽  
Emg Pattern Recognition

Background: Electromyography (EMG) pattern recognition offers the potential for improved control of multifunction myoelectric prostheses. However, it is unclear whether this technology can be successfully used by congenital amputees. Objective: The purpose of this investigation was to assess the ability of congenital transradial amputees to control a virtual multifunction prosthesis using EMG pattern recognition and compare their performance to that of acquired amputees from a previous study. Study Design: Preliminary cross-sectional study. Methods: Four congenital transradial amputees trained and tested a linear discriminant analysis (LDA) classifier with four wrist movements, five hand movements, and a no-movement class. Subjects then tested the classifier in real time using a virtual arm. Results: Performance metrics for the residual limb were poorer than those with the intact limb (classification accuracy: 52.1%±15.0% vs. 93.2%±15.8%; motion-completion rate: 49.0%±23.0% vs. 84.0%±9.4%; motion-completion time: 2.05±0.75 s vs. 1.13±0.05 s, respectively). On average, performance with the residual limb by congenital amputees was reduced compared to that reported for acquired transradial amputees. However, one subject performed similarly to acquired amputees. Conclusions: Pattern recognition control may be a viable option for some congenital amputees. Further study is warranted to determine success factors.

scholarly journals Non-invasive detection of silicosis based on array sensing and pattern recognition

2021 ◽  
Vol 271 ◽  
pp. 03030
Author(s):  
Wufan Xuan ◽  
Zhen Han ◽  
Lina Zheng
Keyword(s):  
Pattern Recognition ◽  
Sensor Array ◽  
Characteristic Curve ◽  
Cross Sectional Study ◽  
Gradient Boosting ◽  
Exhaled Breath ◽  
Cross Sectional ◽  
Linear Discriminant ◽  
Extreme Gradient Boosting ◽  
Fibrotic Lung Disease

Silicosis is a fibrotic lung disease caused by inhalation of silica dusts, early and accurate diagnosis of which remains a challenge. We aimed to assess the performance of a nanofiber sensor array and pattern recognition to promptly and noninvasively detect silicosis. A total of 210 silicosis cases and 430 non-silicosis controls were enrolled in a cross-sectional study. Exhaled breath was analysed by a portable analytical system incorporating an array of 16x organic nanofiber sensors. Models were established by Deep Neural Network and eXtreme Gradient Boosting. Linear Discriminant Analysis was used for dimensionality reduction and visualized data analysis. Receiver Operating Characteristic Curve, accuracy, sensitivity and specificity were used to evaluate models. Results: 99.3% AUC, 96.0% accuracy, 94.1% sensitivity, and 96.3% specificity were achieved in test set. Silicosis cases present different breath patterns from healthy controls, classification results using which were highly consistent with the experts’ diagnosis. Breath analysis performed with the sensor array and pattern recognition is expected to provide a quick, stable recognition for silicosis. In this paper, different forms of features, different algorithms and data sets over long time periods were used, which provides a reference for silicosis expiratory diagnosis scheme.

scholarly journals Removable denture is a risk indicator for peri-implantitis and facilitates expansion of specific periodontopathogens: a cross-sectional study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jasmin Grischke ◽  
Szymon P. Szafrański ◽  
Uthayakumar Muthukumarasamy ◽  
Susanne Haeussler ◽  
Meike Stiesch
Keyword(s):  
Bacterial Species ◽  
Positive Association ◽  
Cross Sectional Study ◽  
Risk Indicators ◽  
Risk Indicator ◽  
Sectional Study ◽  
Significant Positive Association ◽  
Cross Sectional ◽  
Linear Discriminant ◽  
Removable Denture

Abstract Background The prevalence of peri-implantitis ranges between 7 and 38.4% depending on risk indicators such as smoking, diabetes mellitus, lack of periodontal maintenance program, and history or presence of periodontitis. Currently, the possible effect of the type of superstructure on peri-implant health is unclear. This cross-sectional study aims to investigate the influence of the superstructure on the prevalence of peri-implant mucositis, peri-implantitis and peri-implant dysbiosis. Methods During a 32-month recruitment period dental implants were assessed to diagnose healthy peri-implant tissues, mucositis or peri-implantitis. The study included 1097 implants in 196 patients. Out of all peri-implantitis cases 20 randomly chosen submucosal biofilms from implants with fixed denture (FD) originating from 13 patients and 11 biofilms from implants with removable dentures (RD) originating from 3 patients were studied for microbiome analysis. Composition of transcriptionally active biofilms was revealed by RNAseq. Metatranscriptomic profiles were created for thirty-one peri-implant biofilms suffering from peri-implantitis and microbiome changes associated with superstructure types were identified. Results 16.41% of the implants were diagnosed with peri-implantitis, 25.00% of implants with RD and 12.68% of implants with FD, respectively. Multivariate analysis showed a significant positive association on patient (p =  < 0.001) and implant level (p = 0.03) between the prevalence of peri-implantitis and RD. Eight bacterial species were associated either with FD or RD by linear discriminant analysis effect size method. However, significant intergroup confounders (e.g. smoking) were present. Conclusions Within the limitations of the present work, RDs appear to be a risk indicator for peri-implantitis and seem to facilitate expansion of specific periodontopathogens. Potential ecological and pathological consequences of shift in microbiome from RDs towards higher activity of Fusobacterium nucleatum subspecies animalis and Prevotella intermedia require further investigation.

scholarly journals How Does the Cause of Infantile Hemiparesis Influence Other Conditioning Factors? A Preliminary Study in a Spanish Population

Children ◽  
2021 ◽  
Vol 8 (5) ◽  
pp. 323
Author(s):  
Rocío Palomo-Carrión ◽  
Rita Pilar Romero-Galisteo ◽  
Helena Romay-Barrero ◽  
Inés Martínez-Galán ◽  
Cristina Lirio-Romero ◽  
...  
Keyword(s):  
Ad Hoc ◽  
Cross Sectional Study ◽  
Motor Dysfunction ◽  
Sensory Loss ◽  
Speech Impairments ◽  
Cross Sectional ◽  
Conditioning Factors ◽  
Age Of Diagnosis ◽  
The Mean ◽  
Preliminary Study

Infantile hemiparesis may be associated with significant morbidity and may have a profound impact on a child’s physical and social development. Infantile hemiparesis is associated with motor dysfunction as well as additional neurologic impairments, including sensory loss, mental retardation, epilepsy, and vision, hearing, or speech impairments. The objective of this study was to analyze the association between the cause of infantile hemiparesis and birth (gestational age), age of diagnosis, and associated disorders present in children with infantile hemiparesis aged 0 to 3 years. An observational and cross-sectional study was performed. A simple and anonymous questionnaire was created ad hoc for parents of children diagnosed with infantile hemiparesis aged between 0 and 3 years about the situation regarding the diagnosis of hemiparesis, birth, cause of hemiparesis, and presence of other associated disorders. Perinatal stroke (60.1%) was the most common cause of hemiparesis, and the most typical associated disorder was epilepsy (34.2%), with the second largest percentage in this dimension corresponding to an absence of associated disorders (20.7%). The most frequent birth was “no premature” (74.1%). The mean age of diagnosis of infantile hemiparesis was registered at 8 months (IQR: 0–36). Knowing the possible association between different conditioning factors and the cause of infantile hemiparesis facilitates the prevention of severe sequelae in children and family, implementing an early comprehensive therapeutic approach in children with infantile hemiparesis.

scholarly journals The Role of Maternal Progesterone and Estradiol Levels in Predicting the Success of Induction of Labour: A Preliminary Study

2019 ◽  
pp. 126-129
Author(s):  
Kanadi Sumapraja ◽  
Hilda R Badruddin
Keyword(s):  
Cross Sectional Study ◽  
Induction Of Labour ◽  
Health Clinic ◽  
Cross Sectional ◽  
Induction Group ◽  
Significant Difference ◽  
Preliminary Study ◽  
Larger Sample ◽  
Estradiol Levels

Objective: to evaluate whether maternal progesterone and estradiol levels could be used to predictthe success ofinduction of labour (IOL) Methods:This cross-sectional study was conducted at the Women’s Health Clinic as well as delivery suite of Dr. Cipto Mangunkusumo Hospital during the period of May 2016 to April 2017. Blood samples of term pregnant women who were indicated for IOL wereobtainedbefore birth. Results:A total 44 subject were recruited in this study.Of these, 24 subjects had successful IOL while the other 20 subjects had IOL failure. There was no significant difference of progesterone among both groups (66,7% vs 75%, p=0,55). The estradiol levels in subjects who successfully performed induction had an average of 16,916.28 ± 2,574.75 pg/mL which did not differ significantly from the failed of induction group with estradiol levels of 14,832.24 ± 2374.47 pg/mL (p = 0,65). Conclusion:We found no significant association between both maternal progesterone and estradiol levels and the success rate of IOL. Further studies with larger sample sizes are required to confirm whether progesterone and estradiol play pivotal roles in the success of IOL. Keywords: progesterone, estradiol, induction of labour   Tujuan: mengevaluasi kadar progesteron dan estradiol ibu sebagai prediktor kesuksesan induksi persalinan Metode: Penelitian ini menggunakan desain potong lintang yang berlangsung pada bulan Mei 2016 hingga April 2017 di Poliklinik dan IGD Kebidanan Rumah Sakit Umum Pusat Rujukan Nasional Cipto Mangunkusumo. Pasien hamil aterm yang dilakukan induksi persalinan dan memenuhi kriteria penelitian akan diambil sampel darah sebelum persalinan. Hasil: Dari 44 subjek yang mengikuti penelitian, 24 subjek berhasil dilakukan induksi persalinan dan 20 subjek gagal.Tidakterdapatperbedaanbermaknapadakadarprogesterone Antarakeduagrup(66,7% vs 75%, p=0,55). Kadar estradiol padapasien yang berhasildilakukaninduksimemiliki rata-rata 16.916,28 + 2.574,75pg/mL yang tidakberbedajauhdengankadar estradiol pasien yang gagalinduksiyaitu 14.832,24 + 2374,47pg/mL (p = 0,65). Kesimpulan: Tidakterdapat perbedaan bermakna antara kadar progesteron dan estradiol maternal terhadap keberhasilan induksi persalinan. Penelitian lebih lanjut dengan jumlah sampel yang lebih besar dibutuhkan untuk mengkonfirmasi hubungan ini dengan lebih baik. Kata kunci: progesteron, estradiol, induksi persalinan

scholarly journals Reducing youth unemployment beyond the Youth Wage Subsidy: A study of Simtech apprentices

2017 ◽  
Vol 15 (0) ◽  
Author(s):  
Mogantheran Naidoo ◽  
Muhammad E. Hoque
Keyword(s):  
Success Factors ◽  
Youth Unemployment ◽  
Cross Sectional Study ◽  
Online Questionnaire ◽  
Cross Sectional ◽  
Wage Subsidy ◽  
Permanent Employment ◽  
Workplace Environment ◽  
Independent Variables ◽  
Managerial Implications

Orientation: South Africa currently has the twin challenges of worsening youth unemployment and scarce skills that threaten its economic and social stability. Artisanal trades are an occupation category that strongly reflects this current problem. Simtech Training Institute in Durban, the study setting, currently trains artisan apprentices and facilitates their internship work placements.Research purpose: The objective of this study was to identify some of the critical success factors that differentiated Simtech artisan apprentices who obtained permanent employment, compared to those who are currently unemployed.Motivation for the study: The main motivation of the study was to improve the conversion rate of artisan apprentices to permanently employed artisans.Research design, approach and method: The study was a cross-sectional study conducted among 51 artisan apprentices who had graduated over the past 3 years at Simtech and who were selected randomly. An online questionnaire comprising primarily Likert scale type questions was utilised to obtain the responses from the sample. Factor analysis was used to remove scale items from the independent variables that did not impact the variability sufficiently. Then the remaining scale items that impacted variability significantly were combined and categorised as new composite independent variables. Logistic regression analysis identified success factors for permanent employment of Simtech graduates.Main findings: Internship or workplace environment had a statistically significant impact on permanent employment. Youth work ethic had a minor impact on permanent employment status – albeit not a statistically significant one.Practical/managerial implications: These findings showed that improving the internship/ workplace environment can reduce youth unemployment and address skills scarcity.Contribution: Internship host companies and other stakeholders need to urgently focus on improving the quality of the internship/workplace environment experienced by artisan apprentices rather than just on the intake number of artisan apprentices that the Youth Wage Subsidy has encouraged to date.

scholarly journals Endothelin-1 Serum Concentration is Lower in Children and Adolescents with High Myopia, a Preliminary Study

2020 ◽  
Vol 9 (5) ◽  
pp. 1327
Author(s):  
Katarzyna Powierza ◽  
Beata Żelazowska-Rutkowska ◽  
Jolanta Sawicka-Powierza ◽  
Bożena Mikołuć ◽  
Beata Urban ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Axial Length ◽  
High Myopia ◽  
Cross Sectional Study ◽  
Enzyme Linked Immunosorbent Assay ◽  
Serum Concentrations ◽  
Myopia Progression ◽  
Cross Sectional ◽  
Weak Negative Correlation ◽  
Preliminary Study

The aim of this study is to evaluate the levels of enothelin-1 (ET-1) in children and adolescents with high myopia and its association with the axial length of the eye and the presence of myopic retinal degeneration. The cross-sectional study was carried out in 57 patients with high myopia and 29 control subjects. Serum concentrations of ET-1 were measured using enzyme-linked immunosorbent assay (ELISA) kit. A significantly lower concentration of ET-1 in highly myopic patients compared to controls was found (1.47 (0.91; 1.87) vs. 1.94 (1.1; 2.69) pg/mL, p = 0.005). In patients with high myopia, a weak negative correlation between ET-1 concentration and the longest axial length out of the two eyes was found (r = −0.255, p = 0.0558). Further analysis revealed statistically significant differences in ET-1 concentration between patients with the axial length of the eye > 26 and ≤ 26 mm (p < 0.041) and patients with the axial length of the eye > 26 mm and controls (p < 0.001). ET-1 expression is disturbed in highly myopic children and adolescents. Lower ET-1 concentration in patients with the axial length of the eye > 26 mm may co-occur with high myopia and should be considered a risk factor in the pathophysiology of high myopia progression.

Validity of The Fertility Quality of Life (FertiQol) Questionnaire in Indonesian Infertile Women

KnE Medicine ◽  
2017 ◽  
Vol 1 (1) ◽  
pp. 202
Author(s):  
Muhammad D. Priangga ◽  
Gita Pratama ◽  
Mila Maidarti ◽  
Achmad K. Harzif ◽  
Budi Wiweko
Keyword(s):  
Quality Of Life ◽  
Statistical Analysis ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Validity And Reliability ◽  
Cross Sectional ◽  
Infertile Women ◽  
The Mean ◽  
Preliminary Study

<p><strong>Introduction</strong></p><p>Infertility in Indonesia has an estimated prevalence as high as 22.3%, with the nature of the problem and its treatment could be devastating, it could affect quality of life and vice versa influence successful of the treatment. The Fertility Quality of Life (FertiQol) Questionnaire was specifically designed for infertility couples and has been demonstrated to have good properties. Studies in several countries has showed consistency in validity and reliability of the questionnaire. Precedently there has been no published study about Fertiqol in Indonesia, this preliminary study is to measure validity and reliability of FertiQol questionnaire among Indonesian infertility women.</p><p><br /> <strong>Material &amp; Methods</strong></p><p>This is a cross-sectional study, a written Fertiqol Questionnaire Indonesian version (www.Fertiqol.org) were distribute to Infertility clinic in Cipto Mangunkusumo General Hospital, total of 129 women completed the questionnaire. Statistical analysis used SPSS version 23.0. The questionnaire were tested for validity with Pearson’s correlation with two tailed and Cronbach α coefficient for reliability.<br /> <strong></strong></p><p><strong>Results</strong></p><p>FertiQol were completed by 129 women with infertility problem. The mean of total FertiQol score was 70.49±11.44, score for emotional, mind/body, relational, environment and tolerability was respectively 63.79±18.86; 66.05±18.22; 75.19.±15.11; 68.99±18.63; 75.64±16.55; 66.23±19.17. Reliability of Fertiqol was high (Cronbach a &gt; 0.70) with every item of questionnaires was valid ( r&gt; 0.1729).<br /> <strong></strong></p><p><strong>Conclusion</strong></p><p>This study showed that FertiQol Indonesian version are valid and reliable in measured quality of life among infertility women in Indonesia.</p>

scholarly journals Asymptomatic intestinal helminth co-infection among pulmonary tuberculosis patients in urban Surabaya: a preliminary study

2020 ◽  
Vol 3 (3) ◽  
pp. 112-118
Author(s):  
Rifat Nurwita Kusumaningtyas ◽  
Indah Setyawati Tantular ◽  
Deby Kusumaningrum ◽  
Rina K Kusumaratna
Keyword(s):  
Pulmonary Tuberculosis ◽  
Helminth Infection ◽  
Clinical Symptoms ◽  
Public Health Problem ◽  
Cross Sectional Study ◽  
Intestinal Helminth ◽  
Cross Sectional ◽  
Tuberculosis Patients ◽  
Preliminary Study ◽  
Few Data

BACKGROUNDPulmonary tuberculosis (TB) is a leading cause of morbidity and mortality, and East Java province is the second largest contributor of co-infection in Indonesia. Asymptomatic helminth infection among pulmonary tuberculosis patients causes another public health problem. Few data relate to helminth infection based on clinical and immunological outcomes of pulmonary TB in highly endemic areas. METHODSThis study was designed as a preliminary study and aimed to determine helminth co-infection among TB patients with a macroscopic assessment. This cross-sectional study was conducted in June-August 2017. RESULTSAmong 16 treated active TB patients from TB cohort data of Tanakali Kedinding health center found that 56% were stool smear-positive for Trichuris trichiura eggs, but had no clinical symptoms. CONCLUSIONWhether or not the helminth infection may have an impact on the diagnosis and treatment of active TB remains to be further investigated. Co-infection could be inhibited by the host immune response and improve the prognosis of TB treatment.

scholarly journals Knowledge of Iranian Dentists, Dental Specialists, and Dental Students Towards COVID-19: A Preliminary Survey of 778 Subjects

2020 ◽  
Vol 21 (12) ◽  
Author(s):  
Farzin Sarkarat ◽  
Alireza Tootoonchian ◽  
Marjan Hosseinpour ◽  
Mehrzad Moghadasi ◽  
Vahid Rakhshan
Keyword(s):  
Healthcare Workers ◽  
Cross Sectional Study ◽  
Dental Students ◽  
Accurate Information ◽  
Sources Of Information ◽  
Chi Square ◽  
Cross Sectional ◽  
Factors Associated ◽  
Chi Square Test ◽  
Preliminary Study

Background: COVID-19 is a serious pandemic. However, no studies worldwide have assessed the knowledge of any healthcare workers, including dentists, towards COVID-19. Objectives: Given the importance of Iran as an epicenter of this disease, this preliminary study assessed the knowledge of dentists, dental students, and dental specialists towards COVID-19. Methods: In this cross-sectional study, a questionnaire with 23 questions (three regarding sources of information and 20 regarding knowledge) was developed through a pilot study. It was distributed electronically to dental professions/students, 778 of whom completed it. Factors associated with knowledge were assessed using the chi-square test in SPSS (α = 0.05). Results: Above 70% of the responders answered correctly to all questions, except for six more technical questions, including handwashing-related questions. Age, specialization, and attendance at lectures and meetings did not play a role in grasping accurate information (all P values > 0.1). Men had poorer information (P = 0.014), and the sources of information were mostly official websites and social networks (P = 0.000). Conclusions: Knowledge of dentists, dental students, and specialists towards SARS-CoV-2 is generally good, except in the case of more technical questions that need more education (especially regarding handwashing).

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