Achieving Efficient Purging in Transparent per-file Secure Wiping Extensions

Author(s):  
Wasim Ahmad Bhat

According to a recent Cloud Security Alliance Report, insider attacks are the third biggest threat in Cloud Security. A malicious-insider can access the low-level device, and recover the sensitive and confidential information which had been deleted by the customer with a belief that the data no more exists physically. Though proposals for secure deletion of data exist, specifically transparent per-file secure wiping extensions, however, they are not efficient and reliable. In this chapter, we propose an efficient and reliable transparent per-file-wiping filesystem extension called restfs. Instead of overwriting at file level which is found in existing wiping extensions, restfs overwrites at block level to exploit the behavior of filesystems for efficiency and reliability. We empirically evaluated the efficiency of restfs using Postmark benchmark and results indicate that restfs can save 28-98% of block overwrites which otherwise need necessarily to be performed in existing wiping extensions. In addition, it can also reduce the number of write commands issued to the disk by 88%.

Human Affairs ◽  
2020 ◽  
Vol 30 (3) ◽  
pp. 328-342
Author(s):  
László Bernáth ◽  
János Tőzsér

AbstractOur paper consists of four parts. In the first part, we describe the challenge of the pervasive and permanent philosophical disagreement over philosophers’ epistemic self-esteem. In the second part, we investigate the attitude of philosophers who have high epistemic self-esteem even in the face of philosophical disagreement and who believe they have well-grounded philosophical knowledge. In the third section, we focus on the attitude of philosophers who maintain a moderate level of epistemic self-esteem because they do not attribute substantive philosophical knowledge to themselves but still believe that they have epistemic right to defend substantive philosophical beliefs. In the fourth section, we analyse the attitude of philosophers who have a low level of epistemic self-esteem in relation to substantive philosophical beliefs and make no attempt to defend those beliefs. We argue that when faced with philosophical disagreement philosophers either have to deny that the dissenting philosophers are their epistemic peers or have to admit that doing philosophy is less meaningful than it seemed before. In this second case, philosophical activity and performance should not contribute to the philosophers’ overall epistemic self-esteem to any significant extent.


2021 ◽  
Vol 72 (5) ◽  
pp. 41-52
Author(s):  
T. Cherkashyna

Using level of income inequality, the clustering of post-communist countries of the Central and Eastern Europe is carried out by the following indicators: Gini index, share in the national income of the second quintile group, share in the national income of the third quintile group, share in the national income of the fourth quintile group, share in the national income of 10% of the poorest, share in the national income of 20% of the richest.,Сluster analysis (k-means method), in the programming environment Statistica is used as analysis tool and five clusters are obtained. The first cluster includes 8 countries (Albania, Hungary, Poland, Bosnia and Herzegovina, Czech Republic, Сroatia, Russia, Slovakia) is characterized by sufficiently low level of income inequality and can be explained by flow of foreign investment and business transnationalization contributing to the increase of incomes of the main population groups of these countries. The second cluster includes 4 countries (Belarus, Slovenia, Ukraine, Moldova) and is characterized by comparatively low level of income inequality, but high level of property inequality due to heredity, аccumulated wealth та concentration of physical and financial capital by so called «oligarchic clans». The third cluster includes 5 countries (Bulgaria, Montenegro, Macedonia, Romania, Serbia) and is characterized by medium level of income inequality. The fourth and fifth clusters include so called «Baltic tigers» (Latvia, Lihuania, Estonia) and is characterized by high level of income inequality as the result of the occurrence of «excess profits» of financial assets owners. In order to decrease the income inequality in the investigated countries, the following measures are proposed: for the countries of the first cluster to accelerate deconcentration of capital ownership by «spaying» (redemption) of privatized enterprises shares by all categories on preferential terms (so called «ESOP programs»); for the countries of the second cluster to implement progressive tax scale where the tax rate for different groups of population vary depending on the income received and citizens with the lowest incomes (at the level of subsistence minimum or minimum wage) do not pay individual taxes at all; for the countries of the third cluster to cope with «shadow» economy and informal unemployment; for the counties of the fourth and fifth clusters to decrease tax burden on private entrepreneurs and thus stimulate self-employment.


Author(s):  
O. B. Tsyhanchuk

Measures to increase production are used to address the issue of providing the population with food. During the peak of the industry (1975–1985), Ukraine annually produced 120–165 thousand tons of rabbit meat, 30–45 million skins, and its share in world rabbit production reached 8 %. In the national volume of meat production, the share of highly dietary rabbit accounted for 8–10 %. Rabbit breeding in Ukraine was a very lucrative industry, which employed more than 600 thousand rabbit breeders. However, in recent years, rabbit breeding has declined due to the lack of modern scientific developments on the issues of complete feeding, rabbit keeping technology, low level of breeding and veterinary support. The development of the industry and the lack of coordinating bodies, both in the center and on the ground, are holding back. At present, the rabbit population of Ukraine is 97–98 % concentrated in individual farms and is 1.2–1.3 million breeding and repair livestock, and the rest in farms and breeding entities of various forms of ownership and management. According to the results of state certification, the breeding base of the industry in Ukraine today consists of 1 breeding plant and 7 breeding breeders of rabbit breeds. For feeding young rabbits used complete ration granular feed, the structure of which had different prebiotic content: I control group – the drug was not received, 2 experimental – 1.5, 3 – 2.0, 4 – 2.5 g/goal. per day. The studies were conducted on four groups of young rabbits, selected on the principle of groups of analogues, 25 heads in each. Thus, the total amount of feed increased from 80 g/goal. per day (35–41 days), up to 100 g (42–48 days), 120 g (49–55 days), up to 140 g (56–62 days), up to 160 g (63–69 days) up to 180 g (70–76 days). Feeding of young rabbits when reared for meat Prebiolact-Kr in animals of the second group at 43.1 g, the third 44.6 g and 45.0 g. The use of Prebiolact-Kr in the feeding of young rabbits when fed meat contributes to an increase in fattening performance, which may be the basis for the practical application of this supplement. Perebiolakt-KR showed the best results in feeding fattening and repair young animals at a dose of 2.0 g/goal per day.


Author(s):  
І. Андрущак ◽  
В. Марценюк ◽  
I. Андрощук ◽  
В. Чудовець ◽  
М. Потейчук

The article discusses the current state of application and development of cloud computing, the main advantages and disadvantages of their use in the states, enterprises and in scientific activity. The standards, regulations and guidance documents in the field of cloud computing information security are developed and analyzed, developed by the Cloud Security Alliance (CSA), the European Network and Information Security Agency (ENISA) and the National Institute of Standards and Technology (NIST), and the results of a detailed analysis of the issues information security in the cloud.


2020 ◽  
pp. 194-254
Author(s):  
Peter Mercer-Taylor

The psalmodic adaptation of classical music constitutes a distinctive creative act in instances in which we find adapters not simply importing excerpts essentially unchanged (a chiefly curatorial service), but making substantive musical decisions to bridge the gap dividing art music from psalmody. This chapter explores such “translational actions,” unfolding in four phases. The first concerns low-level decisions, involving rhythm, ornamentation, and texture. The second centers on syntactic challenges that arise in drawing brief excerpts from larger works (negotiating European passages that begin and end in different keys, for instance). The third focuses on “purposeful substitution”: the replacement of musical effects inappropriate to psalmody with wholly different effects calculated to achieve comparable goals. The fourth explores adaptations that challenge the very notion of a one-to-one correspondence between “excerpt” and “psalm tune”: tunes that draw on more than one European movement, say, or adjacent pairs of tunes drawn from a common source.


1959 ◽  
Vol 39 (1) ◽  
pp. 58-63 ◽  
Author(s):  
J. Weintraub ◽  
C. O. M. Thompson ◽  
M. C. Qually

Calves were fed individually for 18 days on a ration of crushed oats treated with Trolene to give a daily dosage of 10 mg./kg. This treatment produced 94 per cent mortality of pre-hypodermal cattle grubs. This was not significantly different from 97 per cent mortality obtained with a single treatment by boluses at 100 mg./kg. The low-level treatment had no effect on the mortality of the pre-hypodermal grubs during the first week of treatment but reached its full effect before the beginning of the third week. Of the hypodermal grubs present at the time of treatment, 94 per cent died and the remainder pupated. The only symptom of toxicity observed was mild diarrhoea in the low-level-treated calves.In a field experiment, two groups of calves that had consumed treated range blocks daily at averages of 7.7 and 4.2 mg. Trolene/kg. for 93 and 64 days showed 95 and 88 per cent mortality, respectively, of the pre-hypodermal grubs. By comparison, another group of calves, treated with boluses at 110 mg. Trolene/kg., showed 80 per cent mortality. The average number of grubs surviving the three treatments were significantly different from each other and from the untreated controls (P <.01). All treatments were begun before hypodermal grubs had appeared. No symptoms of toxicity were seen in the calves of the two low-level-treated groups; ataxia of the hindquarters was observed in the bolus-treated calves on the day following treatment, but these symptoms disappeared on the same day without the use of an antidote.


2006 ◽  
Vol 50 (2) ◽  
pp. 572-579 ◽  
Author(s):  
Emmanuelle Varon ◽  
Serge Houssaye ◽  
Sophie Grondin ◽  
Laurent Gutmann

ABSTRACT With respect to pneumococci, there is a need to detect first-step mutants with reduced fluoroquinolone (FQ) susceptibility from which second-step, resistant mutants are likely to be selected in the presence of antipneumococcal FQs. Here, we describe an interpretative disk diffusion test, of which three options are presented, that allows the distinction between first- and second-step mutants. Using five FQ disks (pefloxacin, norfloxacin, levofloxacin, ciprofloxacin, and sparfloxacin, option 1), all known mechanisms of altered FQ susceptibility found in first-step mutants (ParC, ParE, GyrA, or efflux) and in second-step mutants (ParC and GyrA or ParE and GyrA) can be accurately detected, making this option a useful epidemiological tool. Using three FQ disks (pefloxacin, norfloxacin, and levofloxacin, option 2), the most prevalent FQ-resistant mutants, but not the first-step GyrA mutants, can be detected. With only two FQ disks (norfloxacin and levofloxacin) in the third and simplest option, first-step mutants can be distinguished from second-step mutants, however, without differentiation of ParC, ParE, or efflux alterations.


1924 ◽  
Vol 39 (2) ◽  
pp. 191-197
Author(s):  
Simon Flexner ◽  
Harold L. Amoss

A strain of the virus of poliomyelitis has been described which has passed through several stages of virulence as tested upon monkeys. The first stage consisted of the adaptation of the original human virus to the monkey. In this process high virulence was readily achieved. The adapted, virulent strain of virus was passed regularly through monkeys and maintained its activity for about 3 years, when diminution became apparent. The loss of power of the virus was such that it may be said to have returned approximately to the level of the original human virus. This change constituted the second stage. The third stage is represented by recovery of the high virulence. This revival occurred, it seems, during the sojourn of the virus in glycerol and required several years for its consummation. It was first noticed nearly 6 years after the low level of the second stage became established. The potent virus of the third stage has been found to remain active over a period of at least 4 years while preserved in glycerol. What constitutes at least a superficial resemblance between the wave-like rises and falls of the incidence of epidemic poliomyelitis and the phenomena of increase and decrease in virulence of the specimen of virus has been alluded to. The two processes differ, however, essentially in respect to the time factor, since the fluctuations of the epidemic wave occupy small and those of the virulence occupy large increments of time.


Author(s):  
Selin Çağatay ◽  
Mia Liinason ◽  
Olga Sasunkevich

AbstractThis chapter lays out the theoretical foundation of the book. It conceptualizes resistance as a space in-between small-scale mundane practices with a low level of collective organizing and large-scale protest activities which often exemplify resistance in social movement studies. In line with feminist and queer conceptualization of resistance, the authors suggest to examine multi-scalarity of resistant practices. The chapter attends to three scales of feminist and LGBTI+  activism in Russia, Turkey, and Scandinavia. The first scale analyzes activism in relation to the civil society-state-market triad. The second scale problematizes the notion of solidarity in relations between feminist and LGBTI+  activists from different geopolitical regions and countries as well as between small- and large-scale activist organizations and groups. Finally, the third scale focuses on individual resistant practices and the role of individual bodies in emergence of collective political struggles.


2018 ◽  
Vol 5 (1) ◽  
pp. 155-168 ◽  
Author(s):  
Piotr W. Juchacz

In the article author states and justifies three theses on the lay judges and their participation in the exercise of justice in Poland. First thesis claims that the statement about the lack of integration in the community of lay judges in Poland is not true any longer and it is possible to observe the beginning of a process of its integration and cooperation connected with the recent establishment and  activity of the Association National Council of Lay Judges. The second thesis states, that it is necessary to broaden the participation of citizens in the exercise of justice as a remedy for a low level of legitimacy and credibility of the judiciary. According to the third thesis Poland is presently in need of a widespread public debate concerning the reform of the institution of lay judges which should lead to a real fulfilment of the constitutional right of citizens to participate in the exercise of justice.


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