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Author(s):  
Varun Chopra ◽  

In the embryonic stage, the usage of vehicle tracking systems were primarily restricted to getting the geographical location of the vehicular units. This scenario, however, was not perennial and with the escalation from a rudimentary stage to a highly complex archi- tecture for vehicular administration that we witness today, the standards for the vehicles security have also become monumental. With the development of V2X communications, the gamut of facilities provided by smart vehicle services has expanded prodigiously. These technological advancements, however have come at a cost. The gargantuan transition that has taken place over the recent years exacts a lot of security and safety mechanisms to be implemented, adjunct to the products and services it comes equipped with. In this paper, after a comprehensive study in the domain, we imply a security system model comprising of a Microcontroller Unit (MCU), as a part of the Vehicle Tracing Mechanism (VTM), well connected with a Management Hub. The communications be- tween the Vehicular Unit(s), Management Hub and the system Vehicle Tracing Mecha- nism (VTM) are made viable via V2X communications with conducive aid from technolo- gies like Global Positioning System, Radio Frequency Identifications and GPRS network. The paper aims to ameliorate the extant security protocols and improve the security and safety standards of smart vehicles by broaching cyber intelligence in smart vehicles.


2021 ◽  
Vol 512 ◽  
pp. 230462
Author(s):  
Xiaopeng Tang ◽  
Kailong Liu ◽  
Qi Liu ◽  
Qiao Peng ◽  
Furong Gao

2021 ◽  
Vol 13 (5) ◽  
Author(s):  
Sergey Shkodinsky ◽  
Inna Rykova ◽  
Anna Yuryeva

In modern conditions, the problem of processing and disposal of household and industrial waste, both for the Russian Federation and most countries of the world, extremely aggravated and requires new approaches to its solution. The purpose of the submitted article is to conduct a comprehensive analysis of the system of supporting investment projects in the Russian Federation in the field of processing and disposal of waste. The methodology of the analysis was based on the assessment of the effectiveness of the measures taken in terms of the management of production and consumption waste in the Russian Federation, including a comprehensive study and generalization of existing support measures in the field of waste management and disposal, including those provided by the public law company for the formation of an integrated system of solid municipal waste management «Russian Environmental Operator». The authors summarized the dynamics of education, disposal, disposal and disposal of production waste and consumption in the Russian Federation in 2010-2020. Investment tools are systematized, which have the right to use a public-legal company for the formation of a comprehensive system for the treatment of solid communal waste "Russian ecological operator". The analysis carried out in the course of the study showed that the sphere of solid municipal waste management in Russia is characterized by the presence of many shortcomings and high risks of the implementation of the federal project «Integrated System of Solid Municipal Waste Management», as well as a low level of attraction of private investments in the industry due to high risks implementation of investment projects in the studied area. Conclusions and analytical generalizations made according to the results of the study can be applied in practice during the substantiation and introduction of optimal mechanisms for the support of investment projects in the field of processing and disposal of waste, taking into account the developed hikes to their typing and specification.


Author(s):  
Mariana Tinoco ◽  
Pedro Von Hafe ◽  
Sérgio Leite ◽  
Margarida Oliveira ◽  
Olga Azevedo ◽  
...  

Abstract A 71-year-old female was admitted in the emergency room after effort-related syncope. She had past medical history of obesity and hypertension treated with lercanidipine. No relevant family history. Physical examination revealed systolic murmur (grade 2/6). ECG showed sinus rhythm and left bundle brunch block (Supplementary figure). Lab results were unremarkable including troponin I. Transthoracic echocardiography (TTE) revealed moderate left ventricular (LV) hypertrophy [septal thickness 14 mm (normal: 6–9mm)], extensive mitral annulus calcification (MAC) with exuberant myocardial calcification at the level of posterior leaflet that invaded adjacent LV walls, systolic anterior motion of the anterior mitral leaflet causing LV outflow tract (LVOT) obstruction (maximum gradient 34 mmHg) and moderate mitral regurgitation (MR) (Panel A). Exercise echocardiogram provoked LVOT gradient >100mmHg and severe MR. Continuous ECG monitoring during 13 days demonstrated no arrhythmic events. Cardiac CT showed multiple calcifications extending from mitral annulus to LV anterior and lateral walls and cardiac MRI was compatible with caseous MAC (Panels B-F). Coronary angiography showed 50% stenosis of mid left anterior descending artery. Normal thoracic CT and ACE, and negative IGRA excluded sarcoidosis and tuberculosis. Comprehensive study, including calcium metabolism and autoantibodies, excluded metabolic and inflammatory aetiologies of myocardial calcification, which was assumed as dystrophic in the context of MAC. No syncope occurred after bisoprolol 2.5 mg, oral rehydration and discontinuation of lercanidipine. However, rest and exercise TTE failed to show improvement of LVOT gradient or MR and patient remained on NYHA class II-III, despite maximal tolerated dose of bisoprolol (5 mg), being therefore referred to cardiac surgery.


2021 ◽  
Author(s):  
Songyuan Liu ◽  
Xiaochun Jin ◽  
Deji Liu ◽  
Hao Xu ◽  
Lidong Zhang ◽  
...  

Abstract Traditional Microbial Enhanced Oil Recovery (MEOR) technology assumes the oil recovery is increased by the biosurfactant generating by the subsurface bacteria. However, we identified that increased recovery factor is mainly contributed by stimulating the indigenous bacteria to plug the preferred waterflooding channels, which was proved at laboratory and some high-permeable oilfield, but never implemented in the waterflooding of tight oilfield. This paper presents a comprehensive study on Bio-diversion technique by stimulating indigenous bacteria covering lab research and filed operation lasting 18 months. The lab research comprised: (1) feasibility research using modified recipe and field sample on the stimulation of indigenous microorganisms; and (2) Evaluation of effectiveness of the stimulation based on lab results. A field pilot, consisting of 10 injectors, 10 producers, injecting and producing from multi-zones, reservoir temperature is about 160 F, permeabilities range from 30 md to over 100 md, daily water injection rate is about 2,000 BWPD, pre-treatment water cut is over 90%. It is observed that the water cut has decreased from 98% to 80% gradually (3-6 months after injection). Besides, the water injection index test indicates that the injection profile becomes more evenly after 9 months of microbial nutrient injection because the stimulated bacteria reduce the permeability of more permeable zones and reduce the permeability heterogeneity in the vertical direction. Sharing the field results with the industry may inspire the operators to consider one alternative environmentally friendly and cost-effective approach to increase the recovery factor of tight oil reservoirs. From the technical viewpoint, the field pilot proves that the major mechanisms of MEOR is sweeping the unswept oil by injecting the microbial nutrient to the reservoir to stimulate the indigenous bacteria to block the preferred waterflooding channels.


Trials ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Marc Dohmen ◽  
Andrea Petermann-Meyer ◽  
Daniel Blei ◽  
Rebecca Bremen ◽  
Evamarie Brock-Midding ◽  
...  

Abstract Background Families with minor children affected by parental cancer are at risk of considerable emotional and organizational stress that can severely burden all family members. So far, there has been a lack of comprehensive support services for affected families. The aim of this project is to implement and evaluate a complex psychosocial intervention for these families by providing advice, information, and care on an emotional, psycho-social, and communicative level during and after the cancer experience and across healthcare sectors. Methods Family-SCOUT is a project supported by the German Innovation Fund (https://innovationsfonds.g-ba.de/). The evaluation is based on a mixed-methods quasi-experimental design with the intervention and control groups. A standardized postal survey at three measurement points (T0: study enrollment; T1: 3 months of follow-up; T2: 9 months of follow-up), secondary data from the participating health insurance funds, and semi-structured qualitative interviews are used for summative and formative evaluation. The study aim is to include n=560 families. Data will be analyzed according to the intention-to-treat principle. The primary analysis is the comparison of the Hospital Anxiety and Depression Scale (HADS) response rates (minimal important difference (MID) ≥ 1.6 in at least one of the two parents) at T2 between the intervention and control group using Fisher’s exact test. The conduct of the study as well as the development and implementation of the intervention will be accompanied by comprehensive study monitoring following the principles of an effectiveness-implementation hybrid study. Discussion The results will allow to test the effectiveness and efficiency of the intervention for the target group. The first experience with the implementation of the intervention in model regions will be available. The evaluation results will serve as the basis to assess the need of including the intervention in the catalog of services of the statutory health insurance funds in Germany. Trial registration ClinicalTrials.gov, NCT04186923. Retrospectively registered on 4 December 2019.


Molecules ◽  
2021 ◽  
Vol 26 (18) ◽  
pp. 5595
Author(s):  
Mohaned Aboshatta ◽  
Vitor Magueijo

Amine absorption (or amine scrubbing) is currently the most established method for CO2 capture; however, it has environmental shortcomings and is energy-intensive. Deep eutectic solvents (DESs) are an interesting alternative to conventional amines. Due to their biodegradability, lower toxicity and lower prices, DESs are considered to be “more benign” absorbents for CO2 capture than ionic liquids. In this work, the CO2 absorption capacity of choline-chloride/levulinic-acid-based (ChCl:LvAc) DESs was measured at different temperatures, pressures and stirring speeds using a vapour–liquid equilibrium rig. DES regeneration was performed using a heat treatment method. The DES compositions studied had ChCl:LvAc molar ratios of 1:2 and 1:3 and water contents of 0, 2.5 and 5 mol%. The experimental results showed that the CO2 absorption capacity of the ChCl:LvAc DESs is strongly affected by the operating pressure and stirring speed, moderately affected by the temperature and minimally affected by the hydrogen bond acceptor (HBA):hydrogen bond donator (HBD) molar ratio as well as water content. Thermodynamic properties for CO2 absorption were calculated from the experimental data. The regeneration of the DESs was performed at different temperatures, with the optimal regeneration temperature estimated to be 80 °C. The DESs exhibited good recyclability and moderate CO2/N2 selectivity.


Author(s):  
Rebecca Scharlach ◽  
Blake Hallinan ◽  
Limor Shifman

Value is fundamental for social media platforms, not only in the economic sense but also in the sense of normative principles like community and free speech. Policy documents are pivotal sites for the expression of values and present a public-facing account of the roles and responsibilities assigned to various actors, including individual users, third parties, governments and social media corporations. While prior research has examined the construction of individual values such as privacy and transparency in platform policies, there has been no holistic account of the values invoked in these documents. Combining a dictionary-based analysis with a qualitative content analysis, we present the first comprehensive study of the values presented in the policy documents of five major social media platforms: Facebook, Instagram, YouTube, Twitter, and TikTok. Our analysis reveals that policy documents invoke a large number of values that seemingly point to conflicting priorities and commitments. However, these values can be organized in four overarching principles that were consistent across platforms: community, expression, privacy, and improvement. Each principle assigns responsibility for the enactment of these values and by that allows platforms to limit their ethical responsibility for executing the values they publicly promote. Values can thus be described as the “Cheshire cat” of social media platform policies – they look magical, but once touched, may assume a different shape, pop up in an alternative location, or even disappear.


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