scholarly journals A Study on Behavioural Analysis of Specific Ransomware and its Comparison with DBSCAN-MP

2021 ◽  
pp. 01-06
Author(s):  
V. Vinodhini ◽  
C. Kumuthini ◽  
K. Santhi
Keyword(s):  
Time Limit ◽  
The Other ◽  
Multiple Components ◽  
Behavioural Analysis ◽  
Definite Time ◽  
Data Files ◽  
Secret Code ◽  
Microsoft Office

Ransomware attack is known to as WCRY or WannaCry. This ransomware is intriguing advantage of a recently disclosed Microsoft vulnerability (“MS17-010 – “Eternalblue” ) coupled with the Shadow Brokers tools release. After a computer is fouled, WannaCry ransomware targets and encrypts 176 file types. Some of the file types WannaCry targets are database related files, multimedia and archive related files, as well as Microsoft Office documents. In its ransom note, which supports 27 languages, it initially demands US$300 worth of Bitcoins from its fatalities—an amount that increases incrementally after a definite time limit. The victim is also given seven days before the pretentious files are deleted. The WannaCry Ransomware consists of multiple components. It arrives on the ruined computer in the form of a dropper, a self-reliant program that extracts the other application mechanism embedded within it. Those components include:  An application that encrypts and decrypts data Files containing encryption keys A copy of Tor  The program secret code is not obfuscated and was relatively easy for security pros to analyze. Once it is launched, WannaCry tries to access a hard-coded URL (the so-called kill switch); if it can't, it proceeds to investigate for and encrypt files in a slew of important formats, ranging from Microsoft Office files to MP3s and MKVs, leaving them completely inaccessible to the user. It then displays a ransom notice, demanding numbers in Bitcoin to decrypt the files.

scholarly journals A Discontinuity of the Energy of Quantum Walk in Impurities

Symmetry ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1134
Author(s):  
Kenta Higuchi ◽  
Takashi Komatsu ◽  
Norio Konno ◽  
Hisashi Morioka ◽  
Etsuo Segawa
Keyword(s):  
Unit Circle ◽  
Stationary State ◽  
Discrete Time ◽  
Quantum Walk ◽  
Time Limit ◽  
The Other ◽  
Unitary Matrix ◽  
Initial State ◽  
Time Quantum ◽  
Long Time

We consider the discrete-time quantum walk whose local dynamics is denoted by a common unitary matrix C at the perturbed region {0,1,⋯,M−1} and free at the other positions. We obtain the stationary state with a bounded initial state. The initial state is set so that the perturbed region receives the inflow ωn at time n(|ω|=1). From this expression, we compute the scattering on the surface of −1 and M and also compute the quantity how quantum walker accumulates in the perturbed region; namely, the energy of the quantum walk, in the long time limit. The frequency of the initial state of the influence to the energy is symmetric on the unit circle in the complex plain. We find a discontinuity of the energy with respect to the frequency of the inflow.

Equilibrium points for three games based on the Poisson process

1993 ◽  
Vol 30 (03) ◽  
pp. 627-638
Author(s):  
M. T. Dixon
Keyword(s):  
Poisson Process ◽  
Equilibrium Point ◽  
Uniform Distribution ◽  
Arbitrary Number ◽  
Transition Matrix ◽  
Equilibrium Points ◽  
Expected Value ◽  
Time Limit ◽  
The Other ◽  
Player Game

An arbitrary number of competitors are presented with independent Poisson streams of offers consisting of independent and identically distributed random variables having the uniform distribution on [0, 1]. The players each wish to accept a single offer before a known time limit is reached and each aim to maximize the expected value of their offer. Rejected offers may not be recalled, but they are passed on to the other players according to a known transition matrix. This paper finds equilibrium points for two such games, and demonstrates a two-player game with an equilibrium point under which the player with the faster stream of offers has a lower expected reward than his opponent.

Equilibrium points for three games based on the Poisson process

1993 ◽  
Vol 30 (3) ◽  
pp. 627-638 ◽  
Author(s):  
M. T. Dixon
Keyword(s):  
Poisson Process ◽  
Equilibrium Point ◽  
Uniform Distribution ◽  
Arbitrary Number ◽  
Transition Matrix ◽  
Equilibrium Points ◽  
Expected Value ◽  
Time Limit ◽  
The Other ◽  
Player Game

An arbitrary number of competitors are presented with independent Poisson streams of offers consisting of independent and identically distributed random variables having the uniform distribution on [0, 1]. The players each wish to accept a single offer before a known time limit is reached and each aim to maximize the expected value of their offer. Rejected offers may not be recalled, but they are passed on to the other players according to a known transition matrix. This paper finds equilibrium points for two such games, and demonstrates a two-player game with an equilibrium point under which the player with the faster stream of offers has a lower expected reward than his opponent.

scholarly journals NaI and CaII interstellar absorption in the field of SN 1987A

1991 ◽  
Vol 148 ◽  
pp. 434-435
Author(s):  
P. Molaro ◽  
G. Vladilo ◽  
S. D'Odorico ◽  
M. Dennefeld ◽  
R. Ferlet ◽  
...  
Keyword(s):  
Radial Velocity ◽  
Layer Structure ◽  
Complex Structure ◽  
The Other ◽  
Interstellar Absorption ◽  
Number Of Components ◽  
Sn 1987A ◽  
Multiple Components ◽  
The Galaxy

We present CaII and NaI spectra for a sample of stars in a 30'×30' field connecting 30 Dor with SN 1987A. Observations were taken with the CES spectrograph linked via fibres with the 3.6m ESO telescope at a resolution of ˜ 6 km s−1. The LMC gas shows a complex structure with both single and multiple components spanning 250 to 300 km s−1. Results can be interpreted using the multi-layer structure suggested by 21 cm observations. Comparing our optical absorptions with 21 cm emissions yields evidence that layers with increasing radial velocity are located one behind the other. The intermediate velocity components are numerous in CaII, but rare in NaI. Towards Sk-69 211, for which we have the highest S/N CaII spectrum, we have detected a number of components comparable to that found in SN 1987A. The 64 km s−1 cloud is detected in a well-confined region of the field, showing remarkable constancy in the radial velocity, which we interpret as evidence that this cloud is located close to the Galaxy.

Krąg rodziców i dzieci uprawnionych do posiadania karty dużej rodziny a konstytucyjna zasada równości wobec prawa

2015 ◽  
pp. 137-153
Author(s):  
Filip Dziedzic
Keyword(s):  
Large Family ◽  
Time Limit ◽  
The Other ◽  
Constitutional Principle ◽  
Legal Situation ◽  
The Family ◽  
The Subject ◽  
Large Families ◽  
The One ◽  
The Right

The subject of the article is the justification of the thesis that the differentiation of the legal situation of parents on the basis of the Act on the Large Family Card, who have established a family with at least three children violates the constitutional principle of equality before the law. On the one hand some parents are entitled to use the card without any time limit, and on the other hand there is a group of parents who also have large families, but are totally deprived of the right. According to the author of the article, the diversity does not represent any constitutionally protected value and the discrimination occurs due to the unlimited duration of the right to own the Card by eligible parents. The result of the above, as well as the fourth (another) child’s right to the Card depending on holding the Card by the parent, is discriminatory for the children born as the fourth (next) child in the family. The article is also an attempt to answer the question which way would be the best to remove the above-mentioned discrimination thus making it most coherent with the objective and content of the analyzed regulation.

Behavioural Analysis And Cognition

1978 ◽  
Vol 6 (2) ◽  
pp. 37-39 ◽  
Author(s):  
Mark Burton
Keyword(s):  
The Other ◽  
The Public ◽  
Behavioural Analysis ◽  
Other Hand ◽  
Behavioural Therapies

Recent articles in this journal have argued for and against the admission of cognitive concepts in discussion of behavioural therapies. The intention of this article is to clarify some of the issues and hence to try and reduce some of the confusion.Much of the confusion stems from a misunderstanding of behaviourism, particularly of the approach variously called radical, analytical, or systematic behaviourism. This approach, associated with Skinner in particular, must be clearly demarcated from methodological behaviourism which simply distinguishes between the public and the private, and then studies only the former, thus maintaining a dualist ontology between the physical and the mental. Analytical behaviourism, on the other hand, only accepts the existence of the physical, but also distinguishes between the public and the private (Skinner, 1945, 1953, 1964).

Behaviour Analysis of Social-Action Constructs: The Case of Empowerment

1991 ◽  
Vol 8 (1) ◽  
pp. 4-9 ◽  
Author(s):  
John F. Smith ◽  
Stephen B. Fawcett ◽  
Fabricio E. Balcazar
Keyword(s):  
Social Action ◽  
Community Psychology ◽  
The Other ◽  
Behaviour Analysis ◽  
Behavioural Analysis

Many constructs used in various areas of psychology often represent some behavioural reality not yet analysed as such. Analyses of behaviours associated with these constructs might profit both behaviour analysis and the other disciplines. This paper provides a behavioural analysis of the construct of ‘empowerment’ found in community psychology. We discuss the implications for researchers attempting to combine behaviour analysis and social action.

The Effects of Time, Access, and Question Type on Response Accuracy and Frequency of Lookbacks in Older, Proficient Readers

1984 ◽  
Vol 16 (2) ◽  
pp. 119-130 ◽  
Author(s):  
Patricia A. Alexander ◽  
Victoria Chou Hare ◽  
Ruth Garner
Keyword(s):  
Observational Data ◽  
Strategic Behavior ◽  
Time Limit ◽  
Question Type ◽  
The Other ◽  
Response Accuracy ◽  
Verbal Reports ◽  
Conditions For Learning ◽  
Unlimited Time

This investigation examined the effects of variation in conditions for learning on lookback use and response accuracy in proficient readers and explored readers' awareness of their strategic behavior. Fifty-two college undergraduates studied a 1300-word expository passage and answered three text-based questions and one reader-based question. Half of the subjects worked under a 10-minute time limit, while the others had unlimited time. For half of the subjects, questions were presented with the passage; for the other half, questions were received after the passage had been studied and turned over. Analysis revealed that subjects who had the questions presented with the text looked back more and responded more accurately than did those receiving questions separately. Time limit did not affect use of lookbacks or accuracy, and subjects looked back for text-based questions only. Based on comparison with observational data, post-task verbal reports were found to be fairly accurate records of lookback use.

scholarly journals HOSS!

2021 ◽  
Vol 251 ◽  
pp. 04005
Author(s):  
David Lawrence
Keyword(s):  
High Intensity ◽  
Data Stream ◽  
The Other ◽  
Raw Data ◽  
Configurable System ◽  
Data Files

The Hall-D Online Skim System (HOSS) was developed to simultaneously solve two issues for the high intensity GlueX experiment. One was to parallelize the writing of raw data files to disk in order to improve bandwidth. The other was to distribute the raw data across multiple compute nodes in order to produce calibration skims of the data online. The highly configurable system employs RDMA, RAM disks, and zeroMQ driven by Python to simultaneously store and process the full high intensity GlueX data stream.

scholarly journals How Preference Change Induced by Mere Action Versus Inaction Persists Over Time

2020 ◽  
Author(s):  
Zhang Chen ◽  
Rob Holland ◽  
Julian Quandt ◽  
Ap Dijksterhuis ◽  
Harm Veling
Keyword(s):  
Crucial Role ◽  
Practical Importance ◽  
Time Limit ◽  
The Other ◽  
Preference Change ◽  
Stimulus Response ◽  
Food Items ◽  
Consumption Choices ◽  
Making Choices ◽  
Over Time

Understanding how sustainable preference change can be achieved is of both scientific and practical importance. Recent work shows that merely responding or not responding to objects during go/no-go training can influence preferences for these objects right after the training, when people choose with a time limit. Here we examined whether and how such immediate preference change in fast choices can impact choices without time limit one week later. In two preregistered experiments, participants responded to go food items and withheld responses toward no-go food items during a go/no-go training. Immediately after the training, they made consumption choices for half of the items (with a time limit in Experiment 1; without time limit in Experiment 2). One week later, participants chose again (without time limit in both experiments). Half of the choices had been presented immediately after the training (repeated choices), while the other half had not (new choices). Participants preferred go over no-go items both immediately after the training and one week later. Furthermore, the effect was observed for both repeated and new choices after one week, revealing a direct effect of mere (non)responses on preferences one week later. Exploratory analyses revealed that the effect after one week is related to the memory of stimulus-response contingencies immediately after the training, and this memory is impaired by making choices. These findings show mere action versus inaction can directly induce preference change that lasts for at least one week, and memory of stimulus-response contingencies may play a crucial role in this effect.

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