134 research outputs found
RETRACTED ARTICLE: In vitro and in vivo biocompatibility study of polyacrylate TiO2@Ag coated nanoparticles for the radiation dose enhancement
No full textWe, the Editors and Publisher of the journal Artificial Cells, Nanomedicine, and Biotechnology, have retracted the following article:Ateeque Ur Rehman, Muhammad Hassan, Sadia Bano, Khizir Farooq, Aun Raza & Muhammad Naeem Anjum (2021) In vitro and in vivo biocompatibility study of polyacrylate TiO2@Ag coated nanoparticles for the radiation dose enhancement. Artificial Cells, Nanomedicine, and Biotechnology, 49(1), 185–193, DOI: 10.1080/21691401.2021.1889574Since publication, concerns were raised about the methods and some images in this article. Specifically, some images in Figure 7 have been duplicated and rotated. When approached for an explanation, the authors were unable to provide a satisfactory explanation for this. The corresponding author has been informed of our decision to retract.We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions.The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”
Quando lo sfruttamento è smart
No full textThe essay examines the ways in which work is used in digital plat. forms. The author proposes to define "smart exploitation" the specific characteristics of the use of work by digital platforms such as Uber. El ements are identified, such as algorithmic management, datification and gamification, highlighting that the freedom of gig workers actually hidks a form of self-exploitation induced by the technical operating models of the platforms themselves. The "smart exploitation" therefore alludes to a
model of technoregulation that promotes the fake self-employment of gig workers
La libera circolazione comunitaria di servizi labour intensive
No full textThe Author assumes that the liberalization of the services in the Eu has a direct impact on national labour law. This thesis is illustrated, on one hand, clarifying the concept of "service" in the Ec Treaty and in the Italian legal system. On the other hand, the essay underlines as, in many cases, the provision of services is characterized by a labour intensive nature. In this sense the cross-border service provision makes the transnational workers mobility (posting) possible but, at the same time, it affects legal and contractual provision concerning employment conditions applicable in the host Member States. Finally, it is highlighted how the development of the internal market for services may generate risks of social dumping and regulatory competition among Member States
tor_differential_treatment
No full textThis is the data corresponding to the NDSS 2016 paper (*) that identified web IP addresses that treat Tor users differently than normal users.
(*) Sheharbano Khattak, David Fifield, Sadia Afroz,Mobin Javed, Srikanth Sundaresan, Vern Paxson, Steven J. Murdoch, and Damon McCoy. Do You See What I See? Differential Treatment of Anonymous Users. The Network and Distributed System Security Symposium (NDSS), 2016.</p
Studying the role of noise in E. coli chemotaxis
No full textBiochemical signaling networks allow living cells to adapt to changing environments, but these networks have to cope with unavoidable number fluctuations (“noise”) in their molecular constituents. These fluctuations can arise over time in an individual cell (due to inherent stochasticity in chemical reactions) or manifest themselves as differences between individual cells. The chemotaxis signaling network of Escherichia coli, using which these bacteria modulate their random walk-like run/tumble swimming pattern to navigate their environment, is a paradigm for the role of noise in cell signaling. The E. coli chemotaxis network thus has been my model system of choice to characterize and study the role of these different types of noise.
A key signaling protein in this network, CheY, when activated by phosphorylation, causes a switch in the rotational direction of the flagellar motors propelling the cell, leading to tumbling. Since the degree of CheY activation/phosphorylation is a function of the cell’s environment, the CheY-P concentration, [CheY-P], is a measure of the output of the chemotaxis network and random fluctuations in [CheY-P] in time provide a proxy for network noise. However, measuring these fluctuations in the single cell, especially at the relevant timescale of individual run and tumble “decision making” events, remains a challenge. In my thesis work, we developed an approach to quantify short timescale (0.5-5 s) network noise due to [CheY-P] fluctuations using rotational switching statistics of individual flagella observed using time-resolved fluorescence microscopy of individual optically trapped E. coli cells. This work revealed the existence of high network noise at steady state which may be critical to driving cell tumbling. Upon activation of the network, this noise is reduced dramatically; we connect this reduction, through modeling, to the existence of an intrinsic kinetic ceiling on network activation, which may be functionally important to prevent unproductive tumbling.
In collaboration with the research groups of Seppe Kuehn, Ido Golding and Nigel Goldenfeld, using single-cell optical trapping, I also studied evolution in E. coli motility/chemotaxis and the cell-cell variation therein in strains that were selected for faster collective migration through agar. In this work, we attempt to connect changes in relevant molecular constituents of the chemotaxis network, CheR and CheB, to changes in motility and chemotaxis at the individual and population level.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-12-01The student, Roshni Bano, accepted the attached license on 2020-11-28 at 12:06.The student, Roshni Bano, submitted this Dissertation for approval on 2020-11-28 at 12:18.This Dissertation was approved for publication on 2020-12-03 at 16:25.DSpace SAF Submission Ingestion Package generated from Vireo submission #15973 on 2021-03-04 at 16:32:37Made available in DSpace on 2021-03-05T21:45:38Z (GMT). No. of bitstreams: 2
BANO-DISSERTATION-2020.pdf: 7517044 bytes, checksum: 47d62521d1beb3f592bee9f7a2d6e8c7 (MD5)
LICENSE.txt: 4208 bytes, checksum: 30550c75130f4c9b6ca05d35948b08b6 (MD5)
Previous issue date: 2020-12-03Embargo set by: Seth Robbins for item 117309
Lift date: 2023-03-05T21:45:47Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 117309
Lift date: 2023-03-05T21:47:41Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemAuthor requested closed access (OA after 2yrs) in Vireo ETD systemLimite
Experiences of district management and school staff regarding newly introduced teacher performance assessment system in Government Schools of Ghizer, Gilgit-Baltistan
No full textThis study aimed to explore the experiences of District management and school staff regarding newly introduced teacher performance assessment system in Government schools of Gilgit- Balistan. The study was conducted in two government schools of the district using qualitative case study approach. Semi-structured interviews, field notes and document analysis were sources of data collection. The study involved seven research participants, a district education officer, two head teachers and four teachers from Gilgit-BaItistan. The study has generated some interesting findings related to their experience. In Government context, there were some concerns and issues in relation to quality teaching, students\u27 learning and drawbacks in the existing performance appraisal tool- Annual Confidential Report, which led the district management to develop and implement a system that was more professional development oriented. It aimed to improve teachers\u27 teaching practices, identifying their needs for the provision of support and accountability. New assessment system was understood as a systematic process of collecting information about teachers\u27 performance for feedback and development. The teachers had positive attitudes towards the new system as it helped them to enhance their content knowledge, planning skills, reflective practices and change their traditional belief of teaching. Most importantly, the systematic process played crucial role in changing the attitude of the teachers towards teaching which contributed to quality teaching and students\u27 achievement. However, teachers had some concerns about unannounced observations and nature of feedback while head teachers experienced less support from the senior management for professional support and monitoring. The District management dealing with large number of schools experienced lack of capacity as a challenge in its effective implementation. The data indicated that collaborative efforts of some key representatives in designing and pilot testing for the feedback before its implementation could be more effective. This study is significant for practitioners to reflect upon their practices and refine the tool to maximize the positive aspects and minimize the shortcomings to make it effective and purposeful
Impact of Workplace Bullying on Organizational Outcome
No full textThis research examines the impact of workplace bullying on organization related outcomes among Doctors. By using purposive sampling technique, data was obtained from 200 male and female doctors having age range from 23 to 45 years. The sample was obtained from 7 different public and private hospitals of Lahore city. NAQ-R scale by Einarsen et al. (2009), job related affective well being scale by Van Katwyk et al. (2000), overall Job satisfaction scale by Cook et al. (1981) and organizational-based self esteem scale by Pierce et al. (1989) were separately used to measure workplace bullying and organization related outcomes. The findings indicate that workplace bullying is strong predictor of lower job affective well being and job satisfaction. The findings of this research have implications for increasing our awareness of the actions and behaviors of workplace bullies and to introduce preventive measures for secure and good workplace settings for all workers
Impact of workplace bullying on organizational outcome
No full textThis research examines the impact of workplace bullying on organization related outcomes among Doctors. By using purposive sampling technique, data was obtained from 200 male and female doctors having age range from 23 to 45 years. The sample was obtained from 7 different public and private hospitals of Lahore city. NAQ-R scale by Einarsen et al. (2009), job related affective well being scale by Van Katwyk et al. (2000), overall Job satisfaction scale by Cook et al. (1981) and organizational-based self esteem scale by Pierce et al. (1989) were separately used to measure workplace bullying and organization related outcomes. The findings indicate that workplace bullying is strong predictor of lower job affective well being and job satisfaction. The findings of this research have implications for increasing our awareness of the actions and behaviors of workplace bullies and to introduce preventive measures for secure and good workplace settings for all workers
Exploring Discrimination on the Basis of International Experience: The Colonial Mindset Bias in the Context Of Pakistan
No full textInvestigation of electronic structure and chemical bonding of intermetallic Pd2HfIn: An ab-initio study
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