bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of Hydrate Formation and Concentration of Salts on the Corrosion of Steel 20 Pipelines
Authors: Poberezhny Lubomyr , Chudyk Ihor , Hrytsanchuk Andrii , Mandryk Oleg , Kalyn Tetyana , Hrytsuliak Halyna , Yakymechko Yaroslav 
Published: August 2020

Abstract
One of the ways to increase natural gas production is to conserve and/or intensify existing wells with their subsequent development. They are characterized by a high content of highly mineralized water, which leads to an increased risk of hydrate formation and internal corrosion. The issue of the formation of gas hydrates in industrial pipelines, which is a major problem for the exploitation of industrial gas pipelines, requires considerable attention to be made to exclude emergency situations. The main task of the study – to determine the effect of hydrates on the corrosion of the pipeline in order to prevent emergencies. A technique for studying the effect of hydration on the corrosion of pipelines has been developed. The combined analysis of the corrosion behavior of pipe material in aggressive media of chloride type was done. According to the results of corrosion-mechanical tests, regularities of joint action of mechanical stresses, concentration of chlorides and hydrate formation on the speed and localization of corrosion processes are established.
Optimal Gas Transport Management Taking into Account Reliability Factor
Authors: Grudz Volodymyr , Grudz Yaroslav , Zapukhliak Vasyl , Chudyk Ihor , Poberezhny Lubomyr , Slobodyan Nazar , Bodnar Vitaliy 
Published: August 2020

Abstract
In the period of shortage of gas supply, special attention is given to reducing the supply of gas to its consumers, that is, their complete and uninterrupted gas supply. Increasing gas losses associated with technological transportation costs, in particular caused by gas flow instability and frequent changes in gas transmission network operating modes. Considering losses due to unreliability of gas pumping is one of the important tasks of gas supply optimization. The purpose of the study is to develop an optimization mathematical model that will simultaneously take into account the factors of reliability and minimum lossesIn the general case, the optimization calculations of the modes of operation of the main gas pipelines are intended to solve three main problems: determining the maximum productivity, calculating the optimal mode with a given productivity and choosing the optimal strategy, the development of the pipeline. On the basis of approaches of simulation modeling of complex systems, a multi-parameter mathematical model of gas supply process optimization was developed. It is shown that a comparative analysis of the forecast and actual indicators of the operating modes of the plunger gas pumping unit shows their satisfactory convergence. The performance of the compressor operation period in the process of injection according to the forecast deviates from the actual value for the whole period of operation of the plunger gas pumping unit in 2016 by 2.98%. The optimization problem of gas pumping planning is considered, taking into account the expected losses, on the basis of which the transfer of the controlled system from the initial state to the final one is carried out by such a sequence of states that minimizes the total cost of the system evolution.
3D-PIV Measurement for EHD Flow of Spiked Tubular Electrode Corona Discharge in Wide Electrostatic Precipitator
Authors: Yan Dongjie , Zhang Ziang , Li Zhenyang , Yu Ya , Gong Hao , Huang Xueming 
Published: August 2020

Abstract
The electrohydrodynamic (EHD) flow induced by a corona discharge has an important influence on the movement and collection of fine particles in an electrostatic precipitator. In this paper, three-dimensional particle image velocimetry (3D-PIV) is used to investigate the impact of different primary flow velocities and applied voltage on diffusion and transport of the spiked tubular electrode corona discharge EHD flow in a wide type electrostatic precipitator. In order to measure the flow characteristics of different positions of a spiked tubular electrode, the PIV measurements are carried out in several cross-sectional planes along the ESP duct. From 2D flow streamlines, in plane 1 (where the tip of the spike is oriented in the direction of primary flow), the velocity of the counter-clockwise vortex caused by the EHD flow near the plate decreases as the primary flow velocity increases. However, in plane 3 (where the tip direction is opposite to the primary flow), two vortices rotate adversely, and the flow velocity of the clockwise vortex near the plate increases as the primary flow velocity increases. Flow velocity increasing near the plate makes the particles deposited on the plate more easily to be re-entrained. It can be found in the three-dimensional analysis of the flow field that there are mainly “ascending vortex” and downward tip jet in the three observation planes. There is a discrepancy (in terms of distribution region and the magnitude of velocity) between the three-dimensional characteristics of these vortices and tip jets in the different cross-sectional planes.
City guide as a multi-sensory mobile phone application
Authors: Konopska Beata , Kamiński Mateusz 
Published: August 2020

AbstractThe authors analyses the issues inherent in implementation of a multi-sensory mobile application which uses a map as an interface for an edutainment-style city guide for tourists. Two models – the triad of tourist experiences (3E), i.e. education, entertainment, and excitement, and the hierarchy of needs of Abraham Maslow – were used as the basis for identifying what conditions should be met by such an application to encourage its use by both local residents and tourists, in equal measure. It was decided that only open source software would be used to achieve the goal of the application.
Tik-Tok: The Utility of Packet Timing in Website Fingerprinting Attacks
Authors: Rahman Mohammad Saidur , Sirinam Payap , Mathews Nate , Gangadhara Kantha Girish , Wright Matthew 
Published: August 2020

Abstract
A passive local eavesdropper can leverage Website Fingerprinting (WF) to deanonymize the web browsing activity of Tor users. The value of timing information to WF has often been discounted in recent works due to the volatility of low-level timing information. In this paper, we more carefully examine the extent to which packet timing can be used to facilitate WF attacks. We first propose a new set of timing-related features based on burst-level characteristics to further identify more ways that timing patterns could be used by classifiers to identify sites. Then we evaluate the effectiveness of both raw timing and directional timing which is a combination of raw timing and direction in a deep-learning-based WF attack. Our closed-world evaluation shows that directional timing performs best in most of the settings we explored, achieving: (i) 98.4% in undefended Tor traffic; (ii) 93.5% on WTF-PAD traffic, several points higher than when only directional information is used; and (iii) 64.7% against onion sites, 12% higher than using only direction. Further evaluations in the open-world setting show small increases in both precision (+2%) and recall (+6%) with directional-timing on WTF-PAD traffic. To further investigate the value of timing information, we perform an information leakage analysis on our proposed handcrafted features. Our results show that while timing features leak less information than directional features, the information contained in each feature is mutually exclusive to one another and can thus improve the robustness of a classifier.
The Price is (Not) Right: Comparing Privacy in Free and Paid Apps
Authors: Han Catherine , Reyes Irwin , Feal Álvaro , Reardon Joel , Wijesekera Primal , Vallina-Rodriguez Narseo , Elazari Amit , Bamberger Kenneth A. , Egelman Serge 
Published: August 2020

Abstract
It is commonly assumed that “free” mobile apps come at the cost of consumer privacy and that paying for apps could offer consumers protection from behavioral advertising and long-term tracking. This work empirically evaluates the validity of this assumption by comparing the privacy practices of free apps and their paid premium versions, while also gauging consumer expectations surrounding free and paid apps. We use both static and dynamic analysis to examine 5,877 pairs of free Android apps and their paid counterparts for differences in data collection practices and privacy policies between pairs. To understand user expectations for paid apps, we conducted a 998-participant online survey and found that consumers expect paid apps to have better security and privacy behaviors. However, there is no clear evidence that paying for an app will actually guarantee protection from extensive data collection in practice. Given that the free version had at least one thirdparty library or dangerous permission, respectively, we discovered that 45% of the paid versions reused all of the same third-party libraries as their free versions, and 74% of the paid versions had all of the dangerous permissions held by the free app. Likewise, our dynamic analysis revealed that 32% of the paid apps exhibit all of the same data collection and transmission behaviors as their free counterparts. Finally, we found that 40% of apps did not have a privacy policy link in the Google Play Store and that only 3.7% of the pairs that did reflected differences between the free and paid versions.
dPHI: An improved high-speed network-layer anonymity protocol
Authors: Bajic Alexander , Becker Georg T. 
Published: August 2020

Abstract
The Internet infrastructure has not been built with security or privacy in mind. As a result, an adversary who has control over a single Autonomous System can set-up mass surveillance systems to gather meta data by passively collecting the headers of the messages they route. To solve this problem, lightweight anonymous routing protocols such as LAP, DOVETAIL and most recently PHI have been proposed which are efficient enough to be deployed in a large scale infrastructure such as the Internet. In this paper we take a closer look at PHI and introduce several de-anonymization attacks malicious nodes can perform to reduce the sender and receiver anonymity. As a direct consequence of this analysis we propose a new protocol called dependable PHI (dPHI). The security analysis of dPHI includes a detailed quantitative anonymity analysis that compares dPHI with PHI, LAP and HORNET. Together with the performance analysis, this allows for a good comparison of trade-offs for these anonymity protocols.
Energy-Efficient Dummy Traffic Generation for Home Automation Systems
Authors: Möllers Frederik 
Published: August 2020

AbstractHome and Building Automation Systems are becoming more and more popular these days. While they increase the comfort of living, they may also leak private information such as user presence to passive observers. In this paper we investigate approaches for the generation of dummy traffic in Home Automation Systems (HASs).We discuss fundamental requirements and their impact as well as two concrete dummy traffic generation algorithms.We measure the impact of Constant- Rate Dummy Traffic (CRDT) on the responsiveness and energy efficiency of Home Automation Systems. As an alternative, we present the Naive Exponential Dummies (NED) generation scheme in which the balance between privacy guarantees and energy efficiency can be arbitrarily moved. We formally prove its privacy guarantees and evaluate it against realistic sample data.
Self-Processing Private Sensor Data via Garbled Encryption
Authors: Manohar Nathan , Jain Abhishek , Sahai Amit 
Published: August 2020

Abstract
We introduce garbled encryption, a relaxation of secret-key multi-input functional encryption (MiFE) where a function key can be used to jointly compute upon only a particular subset of all possible tuples of ciphertexts. We construct garbled encryption for general functionalities based on one-way functions.
We show that garbled encryption can be used to build a self-processing private sensor data system where after a one-time trusted setup phase, sensors deployed in the field can periodically broadcast encrypted readings of private data that can be computed upon by anyone holding function keys to learn processed output, without any interaction. Such a system can be used to periodically check, e.g., whether a cluster of servers are in an “alarm” state.
We implement our garbled encryption scheme and find that it performs quite well, with function evaluations in the microseconds. The performance of our scheme was tested on a standard commodity laptop.
Occupational exposure to inorganic lead and its compounds in Romania
Authors: Negru Mihaela , Calotă Violeta , Călugăreanu Lavinia , Mateș Dana 
Published: August 2020

Abstract
Lead and its compounds are hazardous chemical agents; some lead compounds, are classified as carcinogens in humans. In Romania, the occupational exposure to inorganic lead and its compounds occurs in many sectors: production of lead, manufacture of batteries, manufacture of thermal ceramic products (terracotta), production of electric and electronic components, manufacture of articles of metal wire, production of dyes and additives for plastics, recovery of lead from waste batteries, waste collection and treatment of electrical and electronic equipment, etc. The binding occupational limit value for inorganic lead compounds established under the national regulations is 0.15 mg/m3 in the air (measured in relation to a reference period of eight hours, time-weighted average, TWA). The binding biological limit value is 70 μg Pb/100 ml blood. We have summarized lead occupational exposure data collected from the regional public health authorities in Romania, for the period 2011-2019. The concentrations of lead recorded in the workplaces air varied between “not detected” and 0.22 mg/m3. The lead concentrations in the blood had high values (over the alert value of 40 μg/100 ml blood) in several activities (production of lead, recovery-recycling of lead from waste batteries, manufacture of batteries, and manufacture of articles of metal wire) leading to the need of continuous surveillance of health status for the exposed workers.
Occupational medicine in Sibiu: the switch from historical diseases to the current and emergent ones
Authors: Stoia Mihaela 
Published: August 2020

Abstract
This study aimed to provide a brief historical overview of occupational medicine in Sibiu County combined with epidemiological evidence and trends in occupational diseases useful to design an agenda for future research and development of other components. Methods: to depict a model of circumstances, correlations, and trends, we applied to the local employee population a semi-structured narrative review method combined with the analysis of occupational diseases. The search strategy relied on literature and document review to create a timeline. We used a statistic chart histogram to highlight the most significant factors. Results: since 1950, concerning the industrial profile and the significant health effects on workers, we identified six stages of developing an occupational health network. The coverage was both for medical and hazard surveillance through a centralized system in the communist regime and recovery in the unique Sanatorium for occupational diseases established in the area. Occupational medicine private health services and the Faculty of Medicine from Sibiu appeared in the 1990s. Sibiu’s occupational disease model was a particular one in the 20th century, given the burden of lead poisoning from local industries. Infectious diseases in medical staff related to sporadic epidemics and the ongoing COVID-19 pandemic as an emergent professional risk pose new current challenges for occupational medicine. Conclusion: unique challenges increase the need for occupational epidemiologic research and the need for advances in other components of occupational health, but lessons from the past and traditional methods are well documented and still valuable.
Secrets and Lies
Authors: Sanz Milagros Cid 
Published: August 2020

Abstract
The article covers diverse approaches of the term secret: individual, group, social, transgenerational and psychoanalytical, with reference to various psychoanalysts having reflecting about this topic. The author pays special attention to importance of secrets in the psychoanalytic relationship. Conscious and unconscious secrets are brought into play in transfer-countertransfer, stressing on the importance of tolerating the secrets without forcing its disclosure. The analyst’s capacity to tolerate the unspoken and wait for the timely moments of intervention can allow the development of the internal space in the analytical process.
Combined approach by middle and inferior antrostomy for endosinusal inclavated tooth root
Authors: Gheorghe Alexandra , Crac Silviu , Goanta Cristina , Cirpaciu Daniela , Budu Vlad 
Published: August 2020

Abstract
In the recent years, the development of stomatology with emphasis on dental implants procedures has led to an increase in the number of sinonasal complications. Sinonasal complications of dental disease and treatment are an important cause of sinus pathology, being responsible for 10-12% of all causes of chronic maxillary rhinosinusitis.
The main etiological factors involved in odontogenic sinusitis are represented by dental fillings, tooth roots in traumatic extraction, dental implants displacement and parts of broken instruments. The diagnostic work-up includes evaluation of the symptoms, history of dental treatment, dental examination, CT scan and nasal endoscopy.
The treatment is surgical and can be represented by transnasal endoscopic technique performed by the otorhinolaryngologist or a transoral technique performed by the maxillofacial surgeon when oro-antral fistulas are present. The endoscopic approach is preferred but has its limits when the tooth root is placed in the alveolar recess, or at the level of the anterior, medial and lateral wall of the maxillary sinus. Concurrent middle and inferior antrostomy provides a better view of the sinus and increases effectiveness of the surgical treatment with minimal physiological damage.
Prevalence of limb amputations in a Roma population compared to Caucasians, in patients with diabetes mellitus
Authors: Coşoreanu Andrada , Băleanu Maria , Rusu Emilia , Marinescu Mihai , Iordache Sergiu-Andrei , Vlad Andreea Maria , Rusu Florin , Enache Georgiana , Radulian Gabriela 
Published: August 2020

Abstract
Introduction. Over the last few years, lower limb amputations have represented a prevalent worldwide burden in the evolution of diabetic patients, but at what extent this burden affects the Roma population compared to Caucasians in Romania still needs further comprehension.
Aim. The purpose of this study was to assess the prevalence of lower extremities amputations in a Roma population, compared to a Caucasian population, in the presence of diabetes mellitus (DM), as well as to identify the risk factors associated.
Materials and methods. We included 536 patients, of whom 257 Roma subjects and 279 Romanian Caucasians, with the following socio-demographic status: the Roma group included 123 women (48.1%) and 134 men (51.9%), aged between 18 and 86 years, while the Caucasian group registered 107 women (47.9%) and 172 men (61.6%), aged between 18 and 89 years.
Results. Analyzing the whole group, the prevalence of amputations was 5% (n=27). A greater proportion of amputations was found in Romanian Caucasians (n=21, 7.5%), where there were 17 men (9.9%) and 4 women (3.7%) affected, compared to the Roma population (n=6, 2.3%), where all amputations occurred in men. Noticeably, this complication is more predominantly afflicting men.
Conclusions. Non-traumatic lower extremity amputation remains a challenge today in the care of diabetic patients. In our study, higher rates of amputations were observed in Romanian Caucasians, in comparison with the Roma population. Apart from this, this condition was accompanied by many cardiovascular risk factors.
Martín de Azpilcueta: The Spanish Scholastic on Usury and Time-Preference
Authors: Caranti Pedro J. 
Published: August 2020

Abstract
Martín de Azpilcueta and his fellow Spanish Scholastics writing and teaching at the University of Salamanca during Spain’s Golden Age are rightly pointed to by historians of economic thought as being major contributors toward, if not outright founders of modern economic theory. Among these is the theory of time-preference for which Azpilcueta has repeatedly been given the credit for discovering. However, this discovery is a curious one given how the same man, Azpilcueta, condemned usury in general during his whole life. If Azpilcueta did in fact discover this theory and fully understand its implications, we would reasonably expect him to have questioned his support for the ban on charging an interest on a loan. This paper, therefore, challenges the claim that Azpilcueta understood and revived time-preference theory and shows how his understanding was much more nuanced, and, at times, inconsistent.
A Proletariat of One: Libertarianism and the Psychosis of Authority
Authors: Fisher David L. 
Published: August 2020

Abstract
Libertarianism has a problem, perhaps an insurmountable one, and its problem lies squarely in the domain from which it is sourced: the intellectual and political elite of the West. As such, it rests on an ontological viewpoint far outside the purview and experience of quotidian man. Furthermore, it rests on an epistemology of the person as sovereign, Natural Law, which requires a concomitant education or understanding of the Classics, or at least self-awareness and the ability to think logically. Many non-intellectuals are either uninterested or incapable of following the Libertarian arguments of personal sovereignty and instead submit. This unconscious submission to the authority of a government, father figure, or other self-appointed “authority” relieves the individual of the psychological pain of breaking out of the herd. C. G. Jung (1875-1961) was adamant that to be an individual is a radical act: “To develop one’s own personality is indeed an unpopular undertaking, a deviation that is highly uncongenial to the herd, an eccentricity smelling of the cenobite, as it seems to the outsider [11, Para. 298]. Further, Alexander Hamilton (1755 or 1747-1804) noted that the elite are more than happy to have the masses submit to their authority without question as it advances their control: “a fondness for power is implanted in most men, and it is natural to abuse it when acquired” [9]. The rest of this article explores this psychosis of authority and how Libertarianism suffers in popularity as a result.