21 research outputs found
Bioinspired Psi Intelligent Control for autonomous dynamic systems
Psi Intelligent Control aims to provide a framework for controlling autonomous dynamic systems with prediction capabilities inspired by Psi precognition. Psi in nature relates to an event or state not yet experienced. Although Psi phenomenon is unexplained, it is an inspiration for the present study. The research intends to define and develop frameworks and systems capable of providing information for predicting future events (e.g., for motion control of an autonomous vehicle) and use that information in control of autonomous dynamic systems. A generalized approach inspired by Psi precognition is proposed, and the effect of this technique in the response of dynamic systems is explored. The corresponding parameters and constraints to develop and analyze Psi Intelligent Control for dynamic systems are discussed. Obtaining optimized solutions while considering uncertainties in the system and input parameters are investigated. Optimal Uncertainty Quantification is used to obtain optimized solutions for the control of the autonomous dynamic system, with imperfectly known response functions, input probability measures and parameters.The first author would like to acknowledge Brunel Research and Innovation Fund Award for support of the research carried out in this paper
Protein kinase Cδ expression in breast cancer as measured by real-time PCR, western blotting and ELISA
The protein kinase C (PKC) family of genes encode serine/threonine kinases that regulate proliferation, apoptosis, cell survival and migration. Multiple isoforms of PKC have been described, one of which is PKCδ. Currently, it is unclear whether PKCδ is involved in promoting or inhibiting cancer formation/progression. The aim of this study was therefore to investigate the expression of PKCδ in human breast cancer and relate its levels to multiple parameters of tumour progression. Protein kinase Cδ expression at the mRNA level was measured using real-time PCR (n=208) and at protein level by both immunoblotting (n=94) and ELISA (n=98). Following immunoblotting, two proteins were identified, migrating with molecular masses of 78 and 160 kDa. The 78 kDa protein is likely to be the mature form of PKCδ but the identity of the 160 kDa form is unknown. Levels of both these proteins correlated weakly but significantly with PKCδ concentrations determined by ELISA (for the 78 kDa form, r=0.444, P<0.005, n=91 and for the 160 kDa form, r=0.237, P=0.023, n=91) and with PKCδ mRNA levels (for the 78 kDa form, r=0.351, P=0.001, n=94 and for the 160 kDa form, r=0.216, P=0.037, n=94). Protein kinase Cδ mRNA expression was significantly higher in oestrogen receptor (ER)-positive compared with ER-negative tumours (P=0.007, Mann–Whitney U-test). Increasing concentrations of PKCδ mRNA were associated with reduced overall patient survival (P=0.004). Our results are consistent with a role for PKCδ in breast cancer progression
Impact assessment of master plan of "attain to technical knowledge of specific pathogen free shrimp production and cut off to dependence on foreign products" on Bushehr city environment: A case study, Shoghab research station
This study is a part of the national and technology master plan entitled "Attain to technical knowledge of specific pathogen free shrimp production and cut off to dependence on foreign products". The goals of this work were to assess the environmental effects of Specific Pathogen Free shrimp production complex on surrounded region in Persian Gulf (Shoghab) research station in Bushehr city. The environmental impacts were assessed in Persian Gulf (Shoghab) research station in Bushehr city by usage of simple checklist for impacts prediction, and scaling check list for assessment during Feb 2012 till Sep 2014. Flushing the effluents to the sea is the biggest concern of this project that can resulted in health impacts on aquatic and human communities that can be avoided by treatment. Low diversity in activities beside lack of environmental sensitive elements in the region leads us to use of scaling check list for impact assessment. Environmental grade of each activity can be achieved by stratification of them according to their intensity, significance and scale. We reached +320 and -198 for positive and negative points respectively that sounds a clear yes for execution choice
Which bugs are missed in code reviews: An empirical study on SmartSHARK dataset
In pull-based development systems, code reviews and pull request comments
play important roles in improving code quality. In such systems, reviewers
attempt to carefully check a piece of code by different unit tests.
Unfortunately, sometimes they miss bugs in their review of pull requests, which
lead to quality degradations of the systems. In other words, disastrous
consequences occur when bugs are observed after merging the pull requests. The
lack of a concrete understanding of these bugs led us to investigate and
categorize them. In this research, we try to identify missed bugs in pull
requests of SmartSHARK dataset projects. Our contribution is twofold. First, we
hypothesized merged pull requests that have code reviews, code review comments,
or pull request comments after merging, may have missed bugs after the code
review. We considered these merged pull requests as candidate pull requests
having missed bugs. Based on our assumption, we obtained 3,261 candidate pull
requests from 77 open-source GitHub projects. After two rounds of restrictive
manual analysis, we found 187 bugs missed in 173 pull requests. In the first
step, we found 224 buggy pull requests containing missed bugs after merging the
pull requests. Secondly, we defined and finalized a taxonomy that is
appropriate for the bugs that we found and then found the distribution of bug
categories after analysing those pull requests all over again. The categories
of missed bugs in pull requests and their distributions are: semantic (51.34%),
build (15.5%), analysis checks (9.09%), compatibility (7.49%), concurrency
(4.28%), configuration (4.28%), GUI (2.14%), API (2.14%), security (2.14%), and
memory (1.6%).Comment: 5 pages, 3 figures. This study has been accepted for publication at:
The 19th International Conference on Mining Software Repositories (MSR 2022
Self-Powered and Bio-Inspired Dynamic Systems: Research and Education
Brunel Research and Innovation Fund Awar