106 research outputs found
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
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
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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
Socioeconomic Status, Dependent Personality and Nail Biting Behavior Among Adults: Evaluation of Structural Relationship
No full textThe main objective was to investigate the socioeconomic status and dependent personality as the predictor of nail biting among adults. A sample of 101 adults that nail bit was selected from Sialkot city that aged above 19 to 75 years using purposive sampling from government and private educational institutes and local communities. The socioeconomic status and nail biting measured in the demographic form asking information about income, education, profession and do you nail bit. Further, dependent personality was checked with Dependent Personality Disorder scale Urdu version (Shahzadi & Bano, 2018). Results showed that there is significant predictive relationship present between these two variables on samples (N= 101), R= .432 which indicates a moderate correlation. The R2= .187 which indicated that 1.8% variation in the dependent variable, can be explained by the independent variable. Adjusted R-square a modify form of R-square which is also 1.7 variation in data. Descriptive results of this study showed that these two variables from sample (N= 320) are co-occur only in (N= 101) participants with 31.5 percentage generally in both male and female of Sialkot city. Structure Equation Modeling was used for the analysis of data. The model fit summary indicated the p value of .000 which indicates that socioeconomic factors and dependent personality was the significant predictor of nail biting among adults. All the model fit indices were also in the best prescribed limits as Chi-square/df (1.106), Goodness of Fit Index (.976), Adjusted Goodness of Fit Index (.940), Comparative Fit Index (.974) and Root Mean Square Error of Approximation (.033). Furthermore, the income regression estimate indicates that when income, profession and dependent personality goes up by 1 standard deviation, the nail biting goes up by 0.21, 0.12 and 0.4 standard deviations respectively whereas in case of education, it goes up by 1 standard deviation and the nail biting behavior goes down by .09 standard deviations.
Conclusion: In conclusion, the socioeconomic status and dependent personality was the significant predictor of nail biting behavior among adults
Pakistan’s Trade Flows with Shanghai Cooperation Organization: A Gravity Approach
No full textPakistan has a growing economy and always seeks to integrate with different regional or free trade agreements. The main objective of this study is to estimate empirical evidence of Pakistan’s Trade flow with SCO. The study applied an augmented gravity model with panel data from 1993 through 2020 into two segmentations; pre-inclusion 1993-2016 & post-inclusion 2017-2020 of Pakistan with SCO. The key contribution of this study is to use an indicator of “corruption” to measure a country's internal governance condition. The estimated results reveal that Pakistan had the highest trade potential with Kazakhstan, Tajikistan, India, Russia & China. The policy implication of current research is Pakistan needs to enhance the effectiveness of its exports to increase market share in dynamic regions and improvements of the smooth transportation system are of utmost need for a successful trade
Personal Pronouns in ‘About Us’ Section of Online University Prospectus
No full textThe university prospectus is supposed to be a forceful and pioneering text in promoting and marketing higher education. The present research will deal with the disparities in the frequencies of first and second person pronouns in online prospectuses in cross-cultural linguistics from marketing point of view. The research question is to which extent the frequencies of first and second person pronouns in ‘About Us’ section of online prospectuses are contradictory in cross culture and promotional dimensions. This study is based on the data raked from the ‘About Us’ section of online university prospectuses in 463 culturally distinct institutional contexts of Australia, India, Pakistan, the United Kingdom and the United States of America. The categories of the first person I, we, and the second person you, your were analyzed through multidimensional analysis tagger. The analysis showed that the frequencies of first person pronouns were the highest in all the five countries. On the other hand variations in the occurrence of first and second person pronouns were eminent in 5 countries in the ‘About Us’ section. This research is expected to be useful for the universities and international educational organizations to generate better promotional texts in the marketization of higher education for cross-cultural perspective. Keywords: Online prospectus, ‘About Us’ section, personal pronouns, promotional register, multidimensional analysis tagger, higher education marketin
The cultivation of mushroom Pleurotus flabellatus on paddy straw packed in polyethylene bags with vents at room temperature.
No full textLarge scale production of Dhingri variety mushrooms Pleurotus flabellatus in flexible polythene tubes - A note.
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