Is Bug Severity in Line with Bug Fixing Change Complexity?

2020 ◽  
Vol 30 (11n12) ◽  
pp. 1779-1800
Author(s):  
Zengyang Li ◽  
Peng Liang ◽  
Dengwei Li ◽  
Ran Mo ◽  
Bing Li
Keyword(s):  
Effort Estimation ◽  
Severity Level ◽  
Release Planning ◽  
Bug Reports ◽  
Bug Fixing ◽  
Code Change ◽  
Study Results ◽  
Significant Difference ◽  
Lower Severity ◽  
Severity Levels

Both complexity of code change for bug fixing and bug severity play an important role in release planning when considering which bugs should be fixed in a specific release under certain constraints. This work investigates whether there are significant differences between bugs of different severity levels regarding the complexity of code change for fixing the bugs. Code change complexity is measured by the number of modified lines of code, source files, and packages, as well as the entropy of code change. We performed a case study on 20 Apache open source software (OSS) projects using commit records and bug reports. The study results show that (1) for bugs of high severity levels (i.e. Blocker, Critical and Major in JIRA), there is no significant difference on the complexity of code change for fixing bugs of different severity levels for most projects, while (2) for bugs of low severity levels (i.e. Major, Minor and Trivial in JIRA), fixing bugs of a higher severity level needs significantly more complex code change than fixing bugs of a lower severity level for most projects. These findings provide useful and practical insights for effort estimation and release planning of OSS development.

Using Conventional Articulation Tests With Highly Unintelligible Children

1992 ◽  
Vol 23 (1) ◽  
pp. 52-60 ◽  
Author(s):  
Pamela G. Garn-Nunn ◽  
Vicki Martin
Keyword(s):  
Test Results ◽  
Phonological Processes ◽  
Rule Based ◽  
Severity Level ◽  
Error Sensitivity ◽  
Conventional Tests ◽  
Severity Levels ◽  
Conventional Test ◽  
Impaired Children

This study explored whether or not standard administration and scoring of conventional articulation tests accurately identified children as phonologically disordered and whether or not information from these tests established severity level and programming needs. Results of standard scoring procedures from the Assessment of Phonological Processes-Revised, the Goldman-Fristoe Test of Articulation, the Photo Articulation Test, and the Weiss Comprehensive Articulation Test were compared for 20 phonologically impaired children. All tests identified the children as phonologically delayed/disordered, but the conventional tests failed to clearly and consistently differentiate varying severity levels. Conventional test results also showed limitations in error sensitivity, ease of computation for scoring procedures, and implications for remediation programming. The use of some type of rule-based analysis for phonologically impaired children is highly recommended.

scholarly journals Ayurveda Body–Mind Constitutional Types and Role of Yoga Intervention Among Type 2 Diabetes Mellitus Population of Chandigarh and Panchkula Regions

2021 ◽  
pp. 097275312110000
Author(s):  
Madhava Sai Sivapuram ◽  
Vinod Srivastava ◽  
Navneet Kaur ◽  
Akshay Anand ◽  
Raghuram Nagarathna ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Lipid Profiles ◽  
Control Groups ◽  
Yoga Intervention ◽  
Positive Effects ◽  
Study Results ◽  
Significant Difference ◽  
And Control

Background: Type 2 diabetes needs a better understanding of etiological factors and management strategies based on lifestyle and constitutional factors, given its high association rate with many cardiovascular, neurological disorders, and COVID-19 infection. Purpose: The present study was undertaken to investigate the effect of Diabetes-specific integrated Yoga lifestyle Protocol (DYP) on glycemic control and lipid profiles of diabetic adults. Along with the DYP intervention, the individuals residing in Chandigarh and Panchkula union territories in the northern part of India were assessed for Ayurveda-based body–mind constitutional type. Ayurveda describes body–mind constitution as “ prakriti,” which has been discussed from two angles, namely physiological and psychological as body and mind are correlated. Methods: Cluster sampling of waitlist control study subjects was used as the sampling method for the study. A total of 1,215 registered subjects (81 diabetic) responded in randomly selected clusters in Chandigarh and Panchkula. Ayurveda physicians did Ayurveda body–mind constitutional assessment called prakriti assessment (physiological body–mind constitution assessment) in 35 participants (23 diabetic, 12 prediabetic) as a part of the study. Results: A group of 50 subjects was randomly selected for yoga intervention out of 81 diabetes mellitus adults, and 31 subjects were enrolled as waitlist controls. A significant decrease in the glycosylated hemoglobin levels from 8.49 ± 1.94% to 7.97 ± 2.20% in the intervention group was noticed. The lipid profiles of the DYP intervention and control groups were monitored. Three-month follow-up results of lipid profile diagnostic tests in intervention and control groups showed a significant difference between the two groups ( P < 0.05). Most diabetic and prediabetic individuals were found to have pitta dosha ( pitta controls all heat, metabolism, and transformation in the mind and body) as dominant constitution type. Conclusion: The study results demonstrated significant positive effects of yoga in diabetic individuals. This study has indicated the evidence for the safety and efficacy of the validated DYP for community-level interventions to prevent maladies like brain damage and stroke.

A Meta-Analysis of Extracorporeal Anticoagulants in Pediatric Continuous Kidney Replacement Therapy

2021 ◽  
pp. 088506662199275
Author(s):  
Rupesh Raina ◽  
Nirav Agrawal ◽  
Kirsten Kusumi ◽  
Avisha Pandey ◽  
Abhishek Tibrewal ◽  
...  
Keyword(s):  
Replacement Therapy ◽  
Meta Analysis ◽  
Kidney Injury ◽  
Electrolyte Imbalance ◽  
Therapeutic Modality ◽  
Regional Citrate Anticoagulation ◽  
Increased Risk ◽  
Study Results ◽  
Significant Difference ◽  
Kidney Replacement Therapy

Objective: Continuous kidney replacement therapy (CKRT) is the primary therapeutic modality utilized in hemodynamically unstable patients with severe acute kidney injury. As the circuit is extracorporeal, it poses an increased risk of blood clotting and circuit loss; frequent circuit losses affect the provider’s ability to provide optimal treatment. The objective of this meta-analysis is to evaluate the safety and efficacy of the extracorporeal anticoagulants in the pediatric CKRT population. Data Sources: We conducted a literature search on PubMed/Medline and Embase for relevant citations. Study Selection: Studies were included if they involved patients under the age of 18 years undergoing CKRT, with the use of anticoagulation (heparin, citrate, or prostacyclin) as a part of therapy. Only English articles were included in the study. Data Extraction: Initial search yielded 58 articles and a total of 24 articles were included and reviewed. A meta-analysis was performed focusing on the safety and effectiveness of regional citrate anticoagulation (RCA) vs unfractionated heparin (UFH) anticoagulants in children. Data Synthesis: RCA had statistically significantly longer circuit life of 50.65 hours vs. UFH of 42.10 hours. Two major adverse effects metabolic alkalosis and electrolyte imbalance seen more commonly in RCA compared to UFH. There was not a significant difference in the risk of systemic bleeding when comparing RCA vs. UFH. Conclusion: RCA is the preferred anticoagulant over UFH due to its significantly longer circuit life, although vigilant circuit monitoring is required due to the increased risk of electrolyte disturbances. Prostacyclin was not included in the meta-analysis due to the lack of data in pediatric patients. Additional studies are needed to strengthen the study results further.

scholarly journals Reproductive Performance Following Hysteroscopic Surgery for Uterine Septum: Results from a Single Surgeon Data

2021 ◽  
Vol 10 (1) ◽  
pp. 130
Author(s):  
Ertan Saridogan ◽  
Mona Salman ◽  
Lerzan Sinem Direk ◽  
Ali Alchami
Keyword(s):  
Reproductive Performance ◽  
Observational Studies ◽  
Patient Characteristics ◽  
Reproductive Outcomes ◽  
Hysteroscopic Surgery ◽  
High Quality Evidence ◽  
Study Results ◽  
Significant Difference ◽  
Uterine Septum

Uterine septum can negatively affect reproductive outcomes in women. Based on evidence from retrospective observational studies, hysteroscopic incision has been considered a solution to improve reproductive performance, however there has been recent controversy on the need for surgery for uterine septum. High quality evidence from prospective studies is still lacking, and until it is available, experts are encouraged to publish their data. We are therefore presenting our data that involves analysis of the patient characteristics, surgical approach and long-term reproductive outcomes of women who received treatment for uterine septum under the care of a single surgeon. This includes all women (99) who underwent hysteroscopic surgery for uterine septum between January 2001 and December 2019. Of those 99 women treated for intrauterine septum who were trying to conceive, 91.4% (64/70) achieved pregnancy, 78.6% (55/70) had live births and 8.6% (6/70) had miscarriages. No statistically significant difference was found in the live birth rates when data was analyzed in subgroups based on age, reason for referral/aetiology and severity of pathology. Our study results support the view that surgical treatment of uterine septa is beneficial in improving reproductive outcomes.

scholarly journals Transformation and functional verification of Cry5Aa in cotton

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shihao Zhao ◽  
Feng Wang ◽  
Qiuping Zhang ◽  
Jiayi Zou ◽  
Zhangshu Xie ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Insect Resistance ◽  
Expression Patterns ◽  
Instar Larva ◽  
Cotton Bollworm ◽  
Pcr Analysis ◽  
Functional Verification ◽  
Study Results ◽  
Significant Difference ◽  
Transgenic Strains

AbstractMost of the cotton bollworm-resistant genes applied in cotton are more than 20 years and they all belong to Cry1Ab/c family, but the insect-resistant effects of Cry5Aa on cotton were rarely reported. The possible risk of resistance is increasing. The study synthesized a novel bollworm-resistant gene Cry5Aa artificially based on preferences of cotton codon. The new gene was transferred to cotton through the method of pollen tube pathway. The transgenic strains were identified by kanamycin test in field and laboratory PCR analysis. Meanwhile, an insect resistance test was conducted by artificial bollworm feeding with transgenic leaves and GK19 was used as a control in this study. Results showed that rate of positive transgenic strains with kanamycin resistance in the first generation (T1), the second generation (T2) and the third generation (T3) respectively were 7.76%, 73.1% and 95.5%. However, PCR analysis showed that the positive strain rate in T1, T2 and T3 were 2.35%, 55.8% and 94.5%, respectively. The resistant assay of cotton bollworm showed that the mortality rate of the second, third and fourth instar larva feed by the transgenic cotton leaves, were 85.42%, 73.35% and 62.79%, respectively. There was a significant difference between transgenic plant of Cry5Aa and GK19 in insect resistance. Finally, we also conducted the further analysis of gene expression patterns, gene flow and the effect on non-target pest in the study. The results showed that Cry5Aa gene had less environmental impact, and Cry5Aa has been transferred successfully and expressed stably in cotton. Therefore, the novel bollworm resistance gene can partially replace the current insect-resistance gene of Lepidoptera insects.

scholarly journals The Combined Effects of Sports Smart Bracelet and Multi-Component Exercise Program on Exercise Motivation among the Elderly in Macau

Medicina ◽  
2021 ◽  
Vol 57 (1) ◽  
pp. 34
Author(s):  
Cheuk Kei Lao ◽  
Bing Long Wang ◽  
Richard S. Wang ◽  
Hsiao Yun Chang
Keyword(s):  
Artificial Intelligence ◽  
Exercise Training ◽  
Training Programs ◽  
Exercise Program ◽  
The Elderly ◽  
Control Group ◽  
Exercise Motivation ◽  
Sport Training ◽  
Study Results ◽  
Significant Difference

Background and objectives: Faced with the serious problem of an aging population, exercise is one of the most effective ways to maintain the health of the elderly. In recent years, with the popularization of smartphones, the elderly have increasingly accepted technological products that incorporate artificial intelligence (AI). However, there is not much research on using artificial intelligence bracelets to enhance elders’ motivation and participation in exercise. Therefore, the purpose of this study is to evaluate the effectiveness of the combination of sports smart bracelets and multi-sport training programs on the motivation of the elderly in Macau. Materials and Methods: The study was conducted with a randomized trial design in a 12 week multi-sport exercise training intervention. According to the evaluation, a total of sixty elders’ pre- and post-test data were included in this study. Results: After 12 weeks of multi-sport exercise training, the evaluation scores on the exercise motivation scale (EMS) increased significantly in the group wearing exercise bracelets and those taking part in the multi-component exercise program, and the degree of progress reached a statistically significant level, but the control group did not show any statistically significant difference. The influence of the combination of sports smart bracelets and multi-sport training programs on elders’ motivation is clearer. Conclusions: The use of sports smart bracelets by elderly people in conjunction with diverse exercise training can effectively enhance elders’ motivation and increase their participation in regular exercise. The combination of sports smart bracelets and multi-sport training programs is worth promoting in the elderly population.

Mining Bug Report Repositories to Identify Significant Information for Software Bug Fixing

2021 ◽  
Author(s):  
Bancha Luaphol ◽  
Jantima Polpinij ◽  
Manasawee Kaenampornpan
Keyword(s):  
The Other ◽  
Problem Domain ◽  
Significant Information ◽  
Bug Reports ◽  
Bug Fixing ◽  
Classification Technique ◽  
Bug Report ◽  
Multiple Issues ◽  
Improved Accuracy ◽  
Software Bug

Most studies relating to bug reports aims to automatically identify necessary information from bug reports for software bug fixing. Unfortunately, the study of bug reports focuses only on one issue, but more complete and comprehensive software bug fixing would be facilitated by assessing multiple issues concurrently. This becomes a challenge in this study, where it aims to present a method of identifying bug reports at severe level from a bug report repository, together with assembling their related bug reports to visualize the overall picture of a software problem domain. The proposed method is called “mining bug report repositories”. Two techniques of text mining are applied as the main mechanisms in this method. First, classification is applied for identifying severe bug reports, called “bug severity classification”, while “threshold-based similarity analysis” is then applied to assemble bug reports that are related to a bug report at severe level. Our datasets are from three opensource namely SeaMonkey, Firefox, and Core:Layout downloaded from the Bugzilla. Finally, the best models from the proposed method are selected and compared with two baseline methods. For identifying severe bug reports using classification technique, the results show that our method improved accuracy, F1, and AUC scores over the baseline by 11.39, 11.63, and 19% respectively. Meanwhile, for assembling related bug reports using threshold-based similarity technique, the results show that our method improved precision, and likelihood scores over the other baseline by 15.76, and 9.14% respectively. This demonstrate that our proposed method may help increasing chance to fix bugs completely.

Combining Webduino Programming With Situated Learning to Promote Computational Thinking, Motivation, and Satisfaction Among High School Students

2021 ◽  
pp. 073563312110399
Author(s):  
Ting-Ting Wu ◽  
Jian-Ming Chen
Keyword(s):  
High School ◽  
High School Students ◽  
Programming Languages ◽  
Situated Learning ◽  
Learning Strategy ◽  
Computational Thinking ◽  
Learning Motivation ◽  
School Students ◽  
Study Results ◽  
Significant Difference

Many countries have incorporated computational thinking (CT) and programming languages into their science and technology courses. Students can improve their CT ability by learning programming languages. Moreover, situated learning enables students to generate knowledge and master problem-solving skills through interaction with situations. This study incorporated Webduino learning and the situated learning strategy into a programming course and analyzed its impact on high school students’ CT ability, learning motivation, and course satisfaction. A quasi-experimental research method was adopted, wherein the experimental group was subjected to the situated learning strategy and the control group was subjected to a traditional teaching method. The study results revealed that integrating Webduino programming with situated learning could effectively improve five categories of CT skills; moreover, the activity models of situated learning enhanced the value and expectation dimensions of learning motivation. In addition, satisfaction with the course content and self-identity slightly improved. However, because teachers were required to elaborate on stories to promote learner engagement with life situations, the time available for programming was limited. Thus, no significant difference was observed in teaching satisfaction.

Association of +505A>G Polymorphism at TAFI Gene with Recurrent Miscarriage in Iranian Women

2021 ◽  
Author(s):  
Razieh Alivand ◽  
Fatemeh Abdi ◽  
Mahmood Dehghani-Ashkezari ◽  
Hossein Neamatzadeh ◽  
Sedigheh Ekraminasab
Keyword(s):  
Recurrent Miscarriage ◽  
Iranian Women ◽  
Specific Pcr ◽  
Study Results ◽  
Significant Difference ◽  
Fibrinolysis Inhibitor ◽  
History Of ◽  
Allele Specific ◽  
Allele Specific Pcr ◽  
Control Study

Background: Recurrent miscarriage (RM) is one of the major problems of public health globally. The thrombin-activatable fibrinolysis inhibitor (TAFI) gene is a plasma zymogen that regulates both fibrinolysis and inflammation. Genetic variants within TAFI gene are presumed to be associated with development of RM. This case-control study aimed to investigate the association of TAFI +505A>G polymorphism with RM in Iranian women referred to Meybod Genetic Center. Methods: Fifty women with RM (at least 2 miscarriages) and 50 healthy women with no history of miscarriage or other fertility complications were participated in this study. The TAFI +505A>G polymorphism was genotyped by allele specific PCR (AS-PCR) assay. Results: The mean age of cases with RM and controls was 27.25 ± 4.31 and 28.42 ± 3.22 years, respectively. The frequency of GG genotype and G allele was 0.00% in patients and controls. There was no significant difference between RM cases and controls in terms of +505A>G genotypes and alleles. Conclusion: This study results indicated that there was no significant relationship between the TAFI +505A>G polymorphism and RM risk in Iranian women. However, further rigorous, studies with a larger sample size and different ethnicity are necessary to confirm our findings.

Effects of a physical self-care support program for patients with fibromyalgia: A randomized controlled trial

2021 ◽  
pp. 1-10
Author(s):  
Suélem B. de Lorena ◽  
Angela L.B.P. Duarte ◽  
Markus Bredemeier ◽  
Vanessa M. Fernandes ◽  
Eduardo A.S. Pimentel ◽  
...  
Keyword(s):  
Controlled Trial ◽  
Fibromyalgia Impact Questionnaire ◽  
Self Care ◽  
Support Program ◽  
Control Group ◽  
Study Objective ◽  
Study Results ◽  
Significant Difference ◽  
Stretching Exercises ◽  
Care Support

BACKGROUND: The effects of stretching exercises in fibromyalgia (FM) deserves further study. OBJECTIVE: To evaluate the effectiveness of a Physical Self-Care Support Program (PSCSP), with emphasis on stretching exercises, in the treatment of FM. METHODS: Forty-five women with FM were randomized to the PSCSP (n= 23) or to a control group (n= 22). The PSCSP consisted of weekly 90-minute learning sessions over 10 weeks, providing instructions on wellness, postural techniques, and active stretching exercises to be done at home. The control group was monitored through 3 medical appointments over 10 weeks and included in a waiting list. The primary outcomes were the Fibromyalgia Impact Questionnaire (FIQ), the Visual Analogue Scale (VAS) for pain, and the Sit and Reach Test (SRT) at the end of the study. RESULTS: Nineteen and 21 patients completed the trial in PSCSP and control groups, respectively. After 10 weeks, the PSCSP group showed significantly better FIQ (difference between adjusted means, -13.64, 95% CI, -21.78 to -5.49, P= 0.002) and SRT scores (7.24 cm, 3.12 to 11.37, P= 0.001) than the CONTROL group, but no significant difference in pain VAS (-1.41, -3.04 to 0.22, P= 0.088). Analysis using multiple imputation (MI) and delta-adjusted MI for missing outcomes rendered similar results. CONCLUSIONS: A PSCSP emphasizing stretching exercises significantly improved FIQ and SRT scores, and may be a helpful therapy for FM.

Sign in / Sign up

Export Citation Format

Share Document