scholarly journals Reliable Reconstruction of Fine-grained Proofs in a Proof Assistant

2021 ◽  
pp. 450-467
Author(s):  
Hans-Jörg Schurr ◽  
Mathias Fleury ◽  
Martin Desharnais
Keyword(s):  
Success Rate ◽  
Failure Rate ◽  
Proof Assistant ◽  
Proof Checking ◽  
Smt Solver ◽  
Fine Grained ◽  
Simple Rules ◽  
Detailed Evaluation ◽  
Reconstruction Time

AbstractWe present a fast and reliable reconstruction of proofs generated by the SMT solver veriT in Isabelle. The fine-grained proof format makes the reconstruction simple and efficient. For typical proof steps, such as arithmetic reasoning and skolemization, our reconstruction can avoid expensive search. By skipping proof steps that are irrelevant for Isabelle, the performance of proof checking is improved. Our method increases the success rate of Sledgehammer by halving the failure rate and reduces the checking time by 13%. We provide a detailed evaluation of the reconstruction time for each rule. The runtime is influenced by both simple rules that appear very often and common complex rules.

scholarly journals The influence of dissection on clinical anatomical knowledge for surgical needs

2021 ◽  
Author(s):  
Georg Feigl ◽  
Andreas Sammer
Keyword(s):  
Success Rate ◽  
Failure Rate ◽  
Human Body ◽  
Visceral Surgery ◽  
High Failure Rate ◽  
Anatomical Knowledge ◽  
High Good ◽  
Primary Focus ◽  
Head Neck ◽  
Dissection Course

Abstract Purpose Due to the ongoing discussion of the usefulness of dissection on human bodies in medical curricula, we investigated the influence of anatomical knowledge collected in the dissection course and requested for modules of visceral surgery. Methods Students attending the dissection course of topographic anatomy had to answer a questionnaire of 22 questions with focus on anatomical knowledge required for visceral surgical modules. Failure was defined as 13 or fewer correct answers, success categorized as high, good or moderate. The same questionnaire was handed out to 245 students prior to the module on visceral surgery. Students provided information on which regions they had dissected during the course or prior to the module. The results were compared to the result of a written Multiple Choice Question (MCQ) exam of the module visceral surgery (n = 160 students) with an unannounced primary focus on anatomy. Results Students who dissected the truncal regions of the human body succeeded in answering the questionnaire with high success. Students dissecting regions of the Head/Neck or Limbs had a high failure rate, and none of them reached the “high” success level. In the MCQ exam, students dissecting truncal regions had a high success rate, while those who had not dissected or who dissected the Head/Neck or Limbs had a high failure rate. Conclusion Dissections support and improve the required knowledge for surgical modules. For the visceral surgical module, students dissecting the region prior to the module greatly benefited. Therefore, entire human body dissection assumes to be preferable.

scholarly journals Feasibility and parental perception of home sleep studies during COVID-19: a tertiary sleep centre experience

2021 ◽  
pp. archdischild-2021-322184
Author(s):  
Susan Jones ◽  
Ross Hanwell ◽  
Tharima Chowdhury ◽  
Jane Orgill ◽  
Kirandeep van den Eshof ◽  
...  
Keyword(s):  
Success Rate ◽  
Failure Rate ◽  
Home Environment ◽  
Neurodevelopmental Disorders ◽  
Parental Perception ◽  
Completion Rates ◽  
Sleep Study ◽  
Sleep Studies ◽  
Lower Success Rate ◽  
Respiratory Polygraphy

ObjectiveRapid implementation of home sleep studies during the first UK COVID-19 ‘lockdown’—completion rates, family feedback and factors that predict success.DesignWe included all patients who had a sleep study conducted at home instead of as inpatient from 30 March 2020 to 30 June 2020. Studies with less than 4 hours of data for analysis were defined ‘unsuccessful’.Results137 patients were included. 96 underwent home respiratory polygraphy (HRP), median age 5.5 years. 41 had oxycapnography (O2/CO2), median age 5 years. 56% HRP and 83% O2/CO2 were successful. A diagnosis of autism predicted a lower success rate (29%) as did age under 5 years.ConclusionSwitching studies rapidly from an inpatient to a home environment is possible, but there are several challenges that include a higher failure rate in younger children and those with neurodevelopmental disorders.

scholarly journals Comparison of Glidescope Core, C-MAC Miller and conventional Miller laryngoscope for difficult airway management by anesthetists with limited and extensive experience in a simulated Pierre Robin sequence: A randomized crossover manikin study

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0250369
Author(s):  
Andreas Moritz ◽  
Luise Holzhauser ◽  
Tobias Fuchte ◽  
Sven Kremer ◽  
Joachim Schmidt ◽  
...  
Keyword(s):  
Airway Management ◽  
Success Rate ◽  
Failure Rate ◽  
Dental Trauma ◽  
Previous Experience ◽  
Pierre Robin Sequence ◽  
Vocal Cords ◽  
Extensive Experience ◽  
Robin Sequence ◽  
Pierre Robin

Background Video laryngoscopy is an effective tool in the management of difficult pediatric airway. However, evidence to guide the choice of the most appropriate video laryngoscope (VL) for airway management in pediatric patients with Pierre Robin syndrome (PRS) is insufficient. Therefore, the aim of this study was to compare the efficacy of the Glidescope® Core™ with a hyperangulated blade, the C-MAC® with a nonangulated Miller blade (C-MAC® Miller) and a conventional Miller laryngoscope when used by anesthetists with limited and extensive experience in simulated Pierre Robin sequence. Methods Forty-three anesthetists with limited experience and forty-three anesthetists with extensive experience participated in our randomized crossover manikin trial. Each performed endotracheal intubation with the Glidescope® Core™ with a hyperangulated blade, the C-MAC® with a Miller blade and the conventional Miller laryngoscope. “Time to intubate” was the primary endpoint. Secondary endpoints were “time to vocal cords”, “time to ventilate”, overall success rate, number of intubation attempts and optimization maneuvers, Cormack-Lehane score, severity of dental trauma and subjective impressions. Results Both hyperangulated and nonangulated VLs provided superior intubation conditions. The Glidescope® Core™ enabled the best glottic view, caused the least dental trauma and significantly decreased the “time to vocal cords”. However, the failure rate of intubation was 14% with the Glidescope® Core™, 4.7% with the Miller laryngoscope and only 2.3% with the C-MAC® Miller when used by anesthetists with extensive previous experience. In addition, the “time to intubate”, the “time to ventilate” and the number of optimization maneuvers were significantly increased using the Glidescope® Core™. In the hands of anesthetists with limited previous experience, the failure rate was 11.6% with the Glidescope® Core™ and 7% with the Miller laryngoscope. Using the C-MAC® Miller, the overall success rate increased to 100%. No differences in the “time to intubate” or “time to ventilate” were observed. Conclusions The nonangulated C-MAC® Miller facilitated correct placement of the endotracheal tube and showed the highest overall success rate. Our results therefore suggest that the C-MAC® Miller could be beneficial and may contribute to increased safety in the airway management of infants with PRS when used by anesthetists with limited and extensive experience.

Impact of Social Media Readiness on Social Media Usage and Competitive Advantage

2019 ◽  
pp. 246-267
Author(s):  
Apoorv Durga ◽  
M. L. Singla
Keyword(s):  
Social Media ◽  
Competitive Advantage ◽  
Success Rate ◽  
Failure Rate ◽  
Media Use ◽  
The Other ◽  
Value Chains ◽  
Media Usage ◽  
Effective Implementation ◽  
Use Of Social Media

Usage of social media within organizations' value chains has been increasing rapidly. There are several benefits and savings projected due to usage of social media. As a result, there is also a lot of hype that is typical of any new web phenomenon. On the other hand, saner voices are cautioning against excessive hype and point to high failure rate of social media initiatives. Lack of best practices or frameworks and incomplete understanding of how to make best use of social media are some of the reasons cited for this high failure of social media initiatives. In addition, there are several other aspects related to governance, people, and processes that need to be addressed to improve success rate of these initiatives. Therefore, effective implementation of a social media initiative includes addressing all those aspects that relate to governance, people, and processes. The authors use a construct, “Social Media Readiness,” that encapsulates these aspects. This chapter summarizes research that shows how readiness can impact social media use.

scholarly journals Retrospective Analysis of Ultrasound-Guided Infraclavicular Block: Effect of Experience of Anesthesiologists on Volume of Local Anesthetic Administered

2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
Tugce Yeniocak ◽  
Nur Canbolat
Keyword(s):  
Success Rate ◽  
Failure Rate ◽  
Local Anesthetic ◽  
Initial Period ◽  
High Dose ◽  
Ultrasound Guided ◽  
Group Iii ◽  
Sonographic Guidance ◽  
Group I ◽  
American Society

Performing a block under ultrasound guidance effectively requires skill; however, inexperienced anesthesiologists often use high-dose LA to ensure success. We aimed to share our experience with the ultrasound-guided infraclavicular brachial plexus block (USGICB) for upper extremity surgeries and to determine changes in failure rate and local anesthetic dose administered with gaining adequate experience. With approval from the local ethics committee, a retrospective review of records of 2953 patients who underwent USGICB between November 2011 and March 2015 was performed for evaluating the following data: age, sex, height, weight, operation type, American Society of Anesthesiologists physical status score, local anesthetic volume, complications, and success of USGICB. The patients were divided into 4 groups of 10 months each from November 2011 to March 2015: first 10-month period, 628 cases (group I); second 10-month period, 672 (group II); third 10-month period, 720 (group III); and the fourth 10-month period, 933 cases (group IV). Nine anesthesiologists with the same baseline experience in USG performed the blocks. During the initial period, when anesthesiologists had insufficient experience, local anesthetic (LA) dose, success rate, failed blocks, and complications were investigated. The LA volume administered in group I (33.7 ± 4.2 ml) was significantly higher than that in groups II, III, and IV (p<0.05). Although a reduction in LA volume administered with increasing anesthesiologist experience was not statistically significant, a volume reduction of over 30 ml was observed in groups II, III, and IV compared with group I. Furthermore, in group I, failure rate (3.2%) was higher than that in groups II, III, and IV (p<0.05). We concluded that sonographic guidance ensures a high success rate and that increased experience of anesthesiologists is associated with reduced complications and failure rate of blocks, in addition to prevention of LA overdose.

Investigating Barriers to Knowledge Management Success: A Conceptual Model and a Comparative Case Analysis

2010 ◽  
Vol 09 (04) ◽  
pp. 303-318 ◽  
Author(s):  
Chihab BenMoussa
Keyword(s):  
Knowledge Management ◽  
Success Rate ◽  
Conceptual Model ◽  
Failure Rate ◽  
Case Analysis ◽  
Theoretical Framework ◽  
High Failure Rate ◽  
One Dimensional ◽  
Integrated Studies ◽  
The One

What barriers obstruct the success of knowledge management programs? This paper has integrated studies on the barriers to knowledge management (KM) into a theoretical framework. Based on this framework, five cases documenting failed KM initiatives were analysed. The analysis gives a clear picture about why certain KM projects fail. The high failure rate of KM can be explained by the supply-IT based approach many organisations adopt when it comes to their KM programs. To increase the success rate of KM projects, companies should go beyond the one-dimensional thinking, e.g. technology, and adopt an approach where all the ingredients of KM operate in a synchronised way.

scholarly journals The Isabelle/Naproche Natural Language Proof Assistant

2021 ◽  
pp. 614-624
Author(s):  
Adrian De Lon ◽  
Peter Koepke ◽  
Anton Lorenzen ◽  
Adrian Marti ◽  
Marcel Schütz ◽  
...  
Keyword(s):  
Natural Language ◽  
Proof Assistant ◽  
Current Version ◽  
Proof Checking ◽  
Controlled Natural Language ◽  
Mathematical Texts

Abstract"Image missing" is an emerging natural proof assistant that accepts input in the controlled natural language ForTheL. "Image missing" is included in the current version of the Isabelle/PIDE which allows comfortable editing and asynchronous proof-checking of ForTheL texts. The dialect of ForTheL can be typeset by "Image missing" into documents that approximate the language and appearance of ordinary mathematical texts.

scholarly journals Improving GNSS Ambiguity Acceptance Test Performance with the Generalized Difference Test Approach

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 3018 ◽  
Author(s):  
Lei Wang ◽  
Ruizhi Chen ◽  
Lili Shen ◽  
Yanming Feng ◽  
Yuanjin Pan ◽  
...  
Keyword(s):  
Success Rate ◽  
Failure Rate ◽  
Rapid Determination ◽  
Integer Ambiguity ◽  
Threshold Function ◽  
Acceptance Test ◽  
Data Set ◽  
Fixed Failure Rate ◽  
Gnss Data ◽  
Difference Test

In Global navigation satellite system (GNSS) data processing, integer ambiguity acceptance test is considered as a challenging problem. A number of ambiguity acceptance tests have been proposed from different perspective and then unified into the integer aperture estimation (IA) framework. Among all the IA estimators, the optimal integer aperture (OIA) achieves the highest success rate with the fixed failure rate tolerance. However, the OIA is of less practical appealing due to its high computation complexity. On the other hand, the popular discrimination tests employ only two integer candidates, which are the essential reason for their sub-optimality. In this study, a generalized difference test (GDT) is proposed to exploit the benefit of including three or more integer candidates to improve their performance from theoretical perspective. The simulation results indicate that the third best integer candidates contribute to more than 70% success rate improvement for integer bootstrapping success rate higher than 0.8 case. Therefore, the GDT with three integer candidates (GDT3) achieves a good trade-off between the performance and computation burden. The threshold function is also applied for rapid determination of the fixed failure rate (FF)-threshold for GDT3. The performance improvement of GDT3 is validated with real GNSS data set. The numerical results indicate that GDT3 achieves higher empirical success rate while the empirical failure rate remains comparable. In a 20 km baseline test, the success rate GDT3 increase 7% with almost the same empirical failure rate.

scholarly journals Results of arthroscopic meniscal repair

2017 ◽  
Vol 5 (1_suppl) ◽  
pp. 2325967117S0001
Author(s):  
María Belén Orlowski ◽  
Damián Arroquy ◽  
Jorge Chahla ◽  
Jorge Guiñazú ◽  
Martín Carboni Bisso ◽  
...  
Keyword(s):  
Success Rate ◽  
Acl Reconstruction ◽  
Failure Rate ◽  
Clinical Success ◽  
Intraoperative Complications ◽  
Meniscal Repair ◽  
Careful Selection ◽  
Meniscal Suture ◽  
Selection Of Patients ◽  
Selection Of

Objectives: Currently the arthroscopic treatment of meniscal pathology has become one of the most common procedures in orthopedic practice and although in most cases meniscectomy is done, meniscal sutures are the treatment of choice when a reparable lesion is diagnosed, especially in young patients. It has been reported that the meniscal repair leads to a lower incidence of developing degenerative changes in the long-term when compared with meniscectomy and nonsurgical treatment of meniscal injuries. The aim of this study was to determine the success rate of meniscal repair achieved in our sports medicine practice. Methods: Between 2006 and 2015, 62 meniscal tears in 58 patients with a mean age of 31 years (range 15-58) were repaired. Mean follow-up was 52 months (range 6-120 months). In 16 patients (28%) was associated with arthroscopic ACL reconstruction. The repair techniques used included outside-in sutures, inside-out sutures, all-inside sutures and a combination of techniques. Failure of the repair was defined by the requirement for repeat knee arthroscopy and partial or subtotal meniscectomy. The indication of arthroscopic revision was based on the presence of mechanical symptoms, after the suture. Results: Failure of meniscus repair occurred in four patients (failure rate: 6.45%), one case was associated with ACL reconstruction (failure rate: 6.25%) and 3 had undergone isolated meniscal suture (failure rate: 8%). The average time for the reoperation was 15 months (4-24). We had no intraoperative complications. Conclusion: The reported failure rate of meniscal repair in stable knees varies between 12% and 43%, with reports that demonstrate a clinical success rate of 100%. In this study, we obtained a success rate of 93.5%. These results are slightly higher than those in the literature, which can be attributed to careful selection of patients and the fact that clinical success tends to be better than the assessed arthroscopically. In summary, we consider the meniscal repair as a successful option in the treatment of meniscal rupture. Due to the importance it has recovered in the last time preserving the meniscus, in the future we should greatly increase our rate of meniscal suture. We hold that careful selection of patients and the type of injury to repair, optimizes the success of meniscal repairs.

Success and failure rates of tumor genotyping techniques in routine pathologic samples with non-small cell lung cancer.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 8050-8050
Author(s):  
Paul A VanderLaan ◽  
Norihiro Yamaguchi ◽  
Erik Folch ◽  
Michael S Kent ◽  
Sidharta P Gangadharan ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Success Rate ◽  
Failure Rate ◽  
Cancer Tissue ◽  
Failure Rates ◽  
Tissue Samples ◽  
Multiple Tumor ◽  
Tissue Acquisition ◽  
Never Smokers ◽  
Tumor Genotyping

8050 Background: Identification of somatic molecular alterrations in NSCLC has become evidence-based practice. The success and failure rate of using commercially-available tumor genotyping techniques in routine day-to-day NSCLC pathology samples is not well described. We sought to evaluate the success and failure rate of EGFR mutation, KRAS mutation and ALK FISH. Methods: Clinicopathologic data, tumor genotype success and failure rates were retrospectively compiled and analyzed from 381 patient-tumor samples sent for routine tumor genotype in clinical practice. Results: Mean age was 65, 61.2% women, 75.9% white, 27.8% never-smokers, 73.8% had advanced NSCLC and 86.1% adenocarcinoma histology. Tumor tissue was obtained from surgical biopsies in 48.8%, core biopsies in 17.9% and as cell blocks from aspirates/fluid in 33.3%. Anatomic sites for tissue collection included lung (49.3%), lymph nodes (22.3%), pleura (11.8%), bone (6.0%), brain (6.0%), among others. In the 207 tumors in which the three tests were ordered concurrently, the success rate for EGFR was 92.3%, for KRAS 91.8% and for ALK FISH 89.9%. The highest failure rates were observed when the tissue was obtained from core biopsies (30.8%, 20.5% and 30.8% for EGFR, KRAS and ALK tests, respectively) and bone specimens (23.1%, 15.4% and 23.1% for EGFR, KRAS and ALK tests, respectively). In specimens obtained from bone, the failure rate was significantly higher in non-surgical than surgical specimens (40% vs 0%, p=0.024 for EGFR) and decalcified than non-decalcified samples (60% vs 5.5%, p=0.021 for EGFR). Conclusions: The success rate of multiple tumor genomic analyses techniques for EGFR, KRAS and ALK gene abnormalities using routine lung cancer tissue samples was ~90%. The highest failure rates occurred in tumors obtained from core biopsies and in bone samples from core biopsies with decalcification; specimens that may need to be scrutinized before submission to molecular studies. Tumor genotype techniques are feasible in most other samples obtained with current tumor acquisition methods, and therefore expansion of routine tumor genotype into the care of patients with NSCLC may not require special tissue acquisition or manipulation.

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