Deep autoencoder neural networks have been widely used in several image classification and recognition problems, including hand-writing recognition, medical imaging, and face recognition. The overall ...performance of deep autoencoder neural networks mainly depends on the number of parameters used, structure of neural networks, and the compatibility of the transfer functions. However, an inappropriate structure design can cause a reduction in the performance of deep autoencoder neural networks. A novel framework, which primarily integrates the Taguchi Method to a deep autoencoder based system without considering to modify the overall structure of the network, is presented. Several experiments are performed using various data sets from different fields, i.e., network security and medicine. The results show that the proposed method is more robust than some of the well-known methods in the literature as most of the time our method performed better. Therefore, the results are quite encouraging and verified the overall performance of the proposed framework.
The aim of this study was to compare the efficacy of silk and Polyethylene Terephthalate (PET) sutures on postoperative complications in impacted lower third molar surgery. This prospective, ...randomized, split-mouth, double-blind clinical study was performed between January 2021 and June 2022 at the Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Van Yüzüncü Yıl University. The patients were categorized into two groups in terms of using suture material. PET suture was used in Group 1, and the silk suture in Group 2 for wound closure following impacted lower third molar surgery. The statistical significance level was accepted as
p
< 0.05 in the study. Forty patients (21 women, 19 men; mean age: 26.1 ± 7.25 years) were included in the study. When values for swelling and trismus evaluation were analyzed, there was no significant intergroup difference (
p
> 0.05). However, the VAS values of the silk group patients were higher at the 12th and 24th hours (
p
< 0.05). In addition, the plaque accumulation value in the silk group was higher than that in the PET group on the second postoperative day (
p
< 0.05). The results indicated that the plaque accumulation in the PET suture was less on the second postoperative day. Also, PET suture group patients felt less pain during the 12th and 24th hours. These results support to use PET sutures in impacted lower third molar surgery.
Graphical Abstract
Bu çalışmada ortaokul 7. sınıf matematik ders kitaplarında yer verilen etkinliklerin matematiksel potansiyel düzeyleri incelenmiştir. Çalışmada doküman incelemesi yöntemi kullanılmıştır. Doküman ...olarak Milli Eğitim Bakanlığı Talim ve Terbiye Kurulu (MEB-TTK) tarafından ders kitabı olarak okutulması için onay verilen iki kitap seçilmiştir. Bu kitaplar A ve B kitabı olarak isimlendirilmiştir. A kitabında 36 ve B kitabında ise 13 etkinliğe yer verilmiştir. Kitaplarda yer verilen etkinliklerin matematiksel potansiyel düzeyleri derinlik, matematiksel odak ve komplekslik bileşenlerine göre betimsel olarak analiz edilmiştir. Etkinlikler bu bileşenlerin her birine göre çok düşük (0 puan), düşük (1 puan), orta (2 puan) ve yüksek (3 puan) olmak üzere dört düzeye göre puanlanmıştır. Derinlik bileşeni kapsamında her iki kitapta yer verilen etkinliklerin ağırlıklı olarak orta ve yüksek puanlı etkinlikler olduğu gözlenmiştir. Matematiksel odak bileşeni kapsamında B kitabında yer verilen etkinliklerin A kitabındaki etkinliklere göre daha yüksek puanlı etkinlikler olduğu görülmüştür. Her iki kitapta da özellikle komplekslik bileşeni düzeyleri düşük çıkmıştır. Veri analizlerinden elde edilen bulgular incelenen her iki ders kitabında yer verilen etkinliklerin matematiksel potansiyel bileşenleri kapsamında farklı öğrenme fırsatları sunduklarını göstermiştir. Ayrıca her iki kitapta yer verilen ve aynı kazanıma yönelik olan bazı etkinliklerin aynı bağlama sahip olmalarına rağmen matematiksel potansiyel bileşenleri özelinde farklı puan dağılımlarına sahip olabildikleri görülmüştür.
This study aims to examine the level of mathematical potential in the activities included in the 7th grade mathematics textbooks used in secondary schools. The study utilizes the document analysis method to achieve this objective. The dataset for the study comprises activities from two textbooks (called Book A and B) approved by the Ministry of National Education. A total of 36 activities from Book A and 13 activities from Book B were analyzed using deductive content analysis technique. The mathematical potential of the activities were examined based on three components: depth, mathematical focus, and complexity. Each component was assessed and scored at four levels: very low (0 points), low (1 point), medium (2 points), and high (3 points). The findings revealed that activities in both books received predominantly medium and high scores in terms of the depth component. However, activities in Book B scored higher than those in Book A in terms of the mathematical focus component. The results highlighted differences in the learning opportunities provided by the textbooks through the prescribed mathematical activities. It was observed that both books had significant deficiencies, particularly in the complexity component. Furthermore, even though activities in both books shared the same context, it was found that certain activities for the same gains had different score distributions in terms of the mathematical potential components. The findings underscore the need for improvement in the complexity aspect of the activities and highlight the variations in the mathematical potential across different textbooks, despite similar contexts.
This paper proposes a new framework for medical data processing which is essentially designed based on deep autoencoder and energy spectral density (ESD) concepts. The main novelty of this framework ...is to incorporate ESD function as feature extractor into a unique deep sparse auto-encoders (DSAEs) architecture. This allows the proposed architecture to extract more qualified features in a shorter computational time compared with the conventional frameworks.
In order to validate the performance of the proposed framework, it has been tested with a number of comprehensive medical waveform datasets with varying dimensionality, namely, Epilepsy Serious Detection, SPECTF Classification and Diagnosis of Cardiac Arrhythmias. Overall, the ESD function speeds up the deep auto-encoder processing time and increases the overall accuracy of the results which are compared to several studies in the literature and a promising agreement is achieved.
The aim of this study was to compare the effect of using L-PRF in patients undergoing impacted lower third molar surgery with either primary or secondary closure techniques. Methods: This ...prospective, randomized, double-blind, split-mouth clinical trial was conducted on patients with bilateral impacted lower third molars of a similar position. Primary closure was performed in group 1 and secondary closure in group 2. The group 1 closure technique was applied to one side of the patients, and the group 2 closure technique was applied to the other side at different times. Of the 45 patients evaluated, 9 patients were excluded from the study because of alveolitis and failure to attend regular control visits out. Results: Of the 36 patients included in the study, 23 were female and 13 were male, with a mean age of 22.42 ± 3.36 years. The secondary closure group had lower VAS scores at hour 6 (p < 0.05). Pain decreased more in the primary closure group when comparing changes between the VAS scores at 6 hours and 7 days (p < 0.05). Conclusions: The results of this study, showing that both secondary and primary closure are effective, with similar outcomes in terms of pain, swelling, and trismus, should be supported by future clinical trials.
In this study, pumice from different regions of Turkey (Diyarbakir, Southeast Turkey and Bitlis, East Turkey) has been supplied and used as supporting material for nanoscale zero-valent iron (nFe
0
...). Native Bitlis pumice (NBP)-supported nanoscale zero-valent iron (BP-nFe
0
) and native Diyarbakir pumice (NDP)-supported nanoscale zero-value iron (DP-nFe
0
) were synthesized under the same conditions. Native pumice (NDP, NBP) and pumice-supported nFe
0
(DP-nFe
0
and BP-nFe
0
) adsorbents were morphologically and structurally characterized by SEM, EDX, XRF and BET. When using NBP as support material, the iron content of the BP-nFe
0
increased 1.9-fold from 1.99 to 3.83%. However, iron content of NDP (2.08%) increased approximately 29 times after it is used as a support material in synthesis of DP-nFe
0
(60%). The removal potential of native pumice (NBP and NDP) and iron-modified pumice (BP-nFe
0
and DP-nFe
0
) samples was investigated to remove Cr(VI) ions. The parameters of solution pH, initial metal concentration, contact time and the amount of adsorbent in the removal of chromium (VI) ions were investigated. Langmuir, Freundlich, Temkin, Dubinin–Radushkevich and Jovanovic isotherm models were used to evaluate the adsorption equilibrium data. The equilibrium adsorption was found so as to be well described by the Langmuir isotherm model for all the adsorbents studied. The maximum adsorption capacity of Cr(VI) ions for NDP, NBP, DP-nFe
0
and BP-nFe
0
was 10.82, 14.30, 161.29 and 17.39 mg/g, respectively. The rate of Cr(VI) removal was subjected to kinetic analysis using pseudo-first-order, pseudo-second-order, intraparticle diffusion and Elovich models. Kinetic studies suggest that adsorption of NDP, NBP, DP-nFe
0
and BP-nFe
0
described more favorably by the pseudo-second-order kinetic model. The results showed that NDP is a much better support material for nFe
0
when compared to NBP.
Despite the existence of several cognitive influences, metacognitive factors on eating and satiation still remain unclear. Therefore, we investigated a relatively recent metacognitive regulation ...approach and its measurement method in a lab-experiment. Participants (N=216) were shown photografs of varying portions of common lunch foods (selected after a separate study, N=94) and asked to make predicted judgments of satiation (JOS) for each via considering their actual hunger levels and whilst imagining other bodily states (e.g., extremely hungry and completely full). Differences calculated between observed-JOS and their reference scores -those presumed to yield accurate matches for the cases-produced either deviances or none at all (discordant-or concordant-JOS). Hungry-group yielded significantly lower concordant-JOS percentage than full-group regardless of portion size, indicating a clearer cognitive tendency to lose control over consumption when being hungry than satiated. Critically, fullgroup could not imagine extreme hunger as hungry-group whereas hungry-group imagined complete fullness just as full-group did, suggesting that whilst hunger was not an obstacle to imagine fullness, fullness hindered the ability to imagine hunger. These findings suggest that hunger and fullness might not be the polar opposites on the very same dimension, which would, for instance, reveal a need to revisit the treatments of eating disorders accordingly.
Background
Although ultrasound (US)-guided regional anesthesia techniques are advantageous in the management of obese patients; the procedures can still be associated with technical difficulties and ...greater failure rates. The aim of this study is to compare the performance properties and analgesic efficacy of US-guided bilateral thoracic paravertebral blocks (TPVBs) in obese and non-obese patients.
Methods
Data of 82 patients, who underwent bilateral reduction mammaplasty under general anesthesia with adjunctive TPVB analgesia between December 2016 and February 2020, were reviewed. Patients were allocated into two groups with respect to their BMI scores (Group NO: BMI < 30 and Group O: BMI ≥ 30). Demographics, ideal US visualization time, total bilateral TPVB procedure time, needle tip visualization and performance difficulties, number of needle maneuvers, surgical, anesthetic and analgesic follow-up parameters, incidence of postoperative nausea and vomiting (PONV), sleep duration, length of postanesthesia care unit (PACU) and hospital stay, and patient/surgeon satisfaction scores were investigated.
Results
Seventy-nine patients’ data were complete. Ideal US visualization and total TPVB performance times were shorter, number of needle maneuvers were fewer and length of PACU stay was shorter in Group NO (
p
< 0.05). Postoperative pain scores were generally similar within first 24 h (
p
> 0.05). Time to postoperative pain, total analgesic requirements, incidence of PONV, sleep duration, length of hospital stay were comparable (
p
> 0.05). Satisfaction was slightly higher in Group NO (
p
< 0.05).
Conclusions
US-guided TPVB performances in obese patients might be more challenging and take longer time. However, it is still successful providing good acute pain control in patients undergoing reduction mammaplasty surgeries.
Level of Evidence III
This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors
www.springer.com/00266
.
Trial Registration
: NCT 04596787
A new model for prediction of bowel gangrene in sigmoid volvulus Ceylan, Cengiz; Baran, Necip Tolga; Kocaaslan, Hüseyin ...
Ulusal travma ve acil cerrahi dergisi = Turkish journal of trauma & emergency surgery : TJTES,
04/2023, Letnik:
29, Številka:
4
Journal Article
Recenzirano
Sigmoid volvulus is a pathology that can be mortal because it is frequently encountered in elderly patients. In case of bowel gangrene, mortality and morbidity increase further. We planned a ...retrospective study, in which the effectiveness of the model was evaluated by creating a model that aims to predict whether intestinal gangrene is present in patients with sigmoid volvulus only by blood tests and thus to quickly guide treatment methods.
In addition to demographic data such as age and gender, laboratory values such as white blood cell, C-reactive protein (CRP), lactate dehydrogenase (LDH), potassium, and colonoscopic findings and whether there was gangrene in the colon during the operation were evaluated retrospectively. In the analysis of the data, independent risk factors were determined by univariate and multivariate logistic regression analyzes as well as Mann-Whitney U and Chi-square tests. Receiver operating characteristic (ROC) analysis was performed for statistically significant continuous numerical data, and cutoff values were determined and Malatya Volvulus Gangrene Model (MVGM) was created. The effectiveness of the created model was again evaluated by ROC analysis.
Of the 74 patients included in the study, 59 (79.7%) were male. The median age of the population was 74 (19-88), and gangrene was detected in 21 (28.37%) patients at surgery. In univariate analyzes, leukocytes <4000/mm3 and >12000/mm3 (OR: 10.737; CI 95%: 2.797-41.211, p=0.001), CRP ≥0.71 mg/dl (OR: 8.107 CI 95%: 2.520-26.082, p<0.0001), potassium ≥3.85 mmoL/L (OR: 3.889; 95% CI): 1.333-11.345, p=0.013), and LDH ≥288 U/L (OR: 3.889; CI 95%: 1.333-11.345, p=0.013), whereas, in multivariate analyzes, only CRP ≥0.71 mg/dL (OR: 3.965; CI 95%: 1.071-15.462, p=0.047) was found to be an independent risk factor for bowel gangrene. The strength of MVGM was AUC 0.836 (0.737-0.936). In addition, it was observed that the probability of bowel gangrene increased approximately 10 times if MVGM was ≥7 (OR: 9.846; 95% CI: 3.016-32.145, p<0.0001).
Besides being non-invasive compared to the colonoscopic procedure, MVGM is a useful method for detecting bowel gangrene. In addition, it will guide the clinician in taking the patients with intestinal loop gangrene to emergency surgery without wasting time in the treatment steps, as well as avoiding complications that may occur during colonoscopy. In this way, we think that morbidity and mortality rates can be reduced.
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