bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALISIS LIVE FORENSIC PADA WHATSAPP WEB UNTUK PEMBUKTIAN KASUS PENIPUAN TRANSAKSI ELEKTRONIK
Authors: Utami Syaza Dyah , Carudin Carudin , Ridha Azhari Ali
Published: June 2021

Internet tidak hanya memberikan manfaat bagi masyarakat, namun juga dapat menimbulkan dampak negatif. Salah satunya yaitu kejahatan dunia maya. Sosial media yang sering digunakan oleh masyarakat dapat disalahgunakan untuk dijadikan sebagai media kejahatan. Salah satunya melalui sosial media yang popular di Indonesia, yaitu Whatsapp. Kasus penipuan melalui aplikasi Whatsapp sering terjadi di Indonesia, sehingga memerlukan penanganan lebih lanjut agar kasus kejahatan tersebut dapat diselesaikan dan pelaku dapat mempertanggungjawabkan perbuatannya. Live forensic sebagai cabang ilmu Digital Forensic dapat digunakan untuk mencari bukti digital terkait kasus penipuan dari perangkat bukti yang masih dalam kondisi menyala (on). Tujuan penelitian ini adalah untuk membuktikan kasus penipuan transaksi elektronik pada Whatsapp web dengan menggunakan metode Live forensic. Metodologi NIST (National Institute of Standards and Technology) dengan tahapan koleksi, pemeriksaan, analisis, dan reporting digunakan pada penelitian ini. Pencarian bukti digital dilakukan pada laptop pelaku, sedangkan smartphone korban dijadikan sebagai pembanding. Bukti digital yang dianalisis berupa teks percakapan, gambar, dan video. Live forensic dilakukan dengan RAM imaging serta akuisisi log file, cache, dan riwayat browser dengan menggunakan FTK Imager dan Browser History Viewer. Hasil penelitian yaitu teks percakapan, filename gambar, filename video, timestamp, history, nomor rekening pelaku, dan nomor handphone korban yang merupakan bukti digital untuk pembuktian kasus. Bukti digital dari proses Live Forensic merupakan bukti yang sah berdasarkan UU Nomor 11 Tahun 2008 Tentang Informasi dan Transaksi Elektronik.
Neuropsychological Maturity in Pre-school Children
Authors: Calle Juan Carlos Chumacero , Garay Jessica Paola Palacios , Ynjante Oscar Raúl Esquivel- , Alarcón-Diaz Henry Hugo , Yabar-Miranda Percy Samuel , Menacho-Vargas Isabel , Taboada Maximo Abel Rodriguez
Published: June 2021

The purpose of the research was to improve neuropsychological maturity in preschool children; to achieve this; a program of strategies that reinforced the levels of neuropsychological maturity was carried out. The research had a quantitative approach, hypothetical-deductive method and quasi-experimental design; a pre-test and post-test of the Cumanin questionnaire, a valid and reliable instrument, was applied to a sample of 450 students of the initial level. The research found differences between the levels of neuropsychological maturity in pre-school children before and after the application of the program. In this sense, it should be pointed out that before the application of the program, 13.1% were at the beginning level, 72.2% were in process and 14.7% were at the achieved level; after the application of the program, 6.2% of the children were at the beginning level, 72.2% were in process and 21.6% were at the achieved level, which means that the children were at the beginning level, 72.2% were in process and 21.6% were at the achieved level. Therefore, it was concluded that the program generates a positive effect on psychomotor skills in preschool children, since highly significant differences were evidenced (z= -16.065; p<0.000).
Global Effects of Atmospheric Emissions
Authors: Abdullah Abdullah A.
Published: June 2021

The element carbon Carbon dioxide emissions are increasing primarily as a result of people's use of fossil fuels for electricity. Coal and oil are fossil fuels that contain carbon that plants removed from the atmosphere by photosynthesis over millions of years; and in just a few hundred years we've returned carbon to the atmosphere. The element carbon Carbon dioxide concentrations rise primarily as a result of the burning of fossil fuels and Freon for electricity. Fossil fuels such as coal, oil and gas produce carbon plants that were photosynthesized from the atmosphere over many years, since in just two centuries, carbon was returned to the atmosphere. Climate alter could be a noteworthy time variety in weather designs happening over periods ranging from decades to millions of a long time. The permanent change in climatic conditions, or in the time period of long-term natural conditions, indicates irregularity in climatic conditions. Discuss toxins are pollutants that have an adverse impact on the ecosystem through interferometry's with the climatic environment, plant physiology, creature organisms, complete biological systems and human property in the form of agricultural or human crops. We list the best climate to represent the fact that global climate change has been identified as one of the major environmental problems facing humanity in the 21st century. In this context, the list of "classic" poisons must be included alongside substances such as oxides of nitrogen or sulfide. Certain environment limiting agents – the most crucial of them being carbon dioxide – which otherwise do not damage life formations. On the other hand, climate research has linked some compounds that have long been known to discuss toxin (occasionally dark CO2) with the warming of the climate.
Role of Hysteroscopy in Repeated IVF/ICSI – ETs Failure and its Impact Effect on Subsequent Attempts
Authors: Elgebally Shaima Gaber Mohmeed Gadalla , Hamouda Mahmoud Salah El Din , Soliman Ahmed Tawfeek , El-Kholi Dina Gamal El Deen
Published: June 2021

Background: Recurrent implantation breakdown is characterized as a complication to accomplish a clinical pregnancy subsequent to transfer of 4 or further high-quality embryos in a least amount of 2 in vitro fertilization (IVF) cycles in a woman less than the age of 40. This investigation intended to the responsibility of hysteroscopy in repeated IVF/ICSI failure and its impact on subsequent trials. Methods: Prospective observational study was conducted at assisted reproductive unit in obstetric and gynecology department in Tanta University Hospital from Jan 2018 to Jan 2020. Included 50 infertile patients with more then two IVF/ICSI failure in spite of transmit of as a minimum two better quality embryos. All patients were subjected to 4D US examination with same device (Siemens acuson X300). Results: We found that from the 30 patients who had normal findings in hysteroscopy, 25 had normal findings also in 4DUS, 2 had polyps, 2 had myoma and 1 patient had septum. From the 3 patients who had polyps in hysterectomy, 1 had normal findings in 4DUS, and 2 patients had polyps. Regarding the two patients who had myoma by hysteroscopy, 1 had normal findings in 3DUS and the other had Myoma. While for the 3 considered patients who had septum in hysteroscopy, all had normal findings in 4DUS. Conclusion: According to this study, hysteroscopy is regarded the gold standard not only for envisaging the cervical canal and uterine cavity, however also for healing several types of benign pathologies localized to that area, it is a secure and uncomplicated process.
Synthesis, Characterization and Optical Properties of PLA / P3HT Blends Thin Films
Authors: Salih Maan Abd-Alameer , Kareem Q.S. , Shinen Mohammed Hadi
Published: June 2021

In this exploration Poly lactic corrosive (PLA) was orchestrated the ring-opening polymerization Poly lactic corrosive (PLA) blended with poly(3-hexylthiophene) (P3HT) which prepared by solution. Blends thin films Synthesis by spin coating technique and using Tetrahydrofuran (THF) as solvent. PLA powder was 'characterized by' 'X-ray' 'diffraction', '(FT-IR)'. pure Optical properties (PLA), (PLA)/P3HT blends thin films with different percentage of P3HT (0, 1, 2, and 3) wt% were investigated using UV-VS spectroscopy The results showed that the absorption, absorption coefficient, extinction coefficient and conductivity increase with increasing the rate of deformation P3HT, The energy gap decreases with increasing deformation.
Proměny konceptu zoo jako reflexe vztahu člověka a přírody
Authors: Nekolný Lukáš
Published: June 2021

V průběhu historie lidstva se jeho vztah k přírodě a zvířatům měnil. Zoo jsou typickým sociálním konstruktem, který tento vztah vyjadřuje a reprezentuje. Tento článek se proto věnuje reflexi jejich vývoje a diskuzi současného stavu. Dlouhou dobu zoo antropocentricky působily jako symbol lidské kontroly nad přírodou. Se změnami společnosti se však měnily jejich role a podoba. Zoo 19. století k dosavadní zábavě a rekreaci přidaly výzkum a vzdělávání, což bylo ve 20. století rozšířeno o ochranu přírody. Ve vědecky řízených zoo aktuálně dochází ke klíčovému propojování těchto funkcí – v ideálním případě do ochranářského edutainmentu. Vznikají zážitkově a ekocentricky pojaté areály, v nichž mizí bariéry a návštěvníci se vnořují do prostředí společného se zvířaty. Záchrana druhu je nově dávána nad význam jedince. Aktuální stav je nicméně reflexí koevolučního vývoje, který se eklekticky zaznamenává do jejich podoby a zachycuje i mnohé z minulosti, nejen nejnovější trendy.
The (1, 2)-step competition graph of a hypertournament
Authors: Li Ruijuan , An Xiaoting , Zhang Xinhong
Published: June 2021

In 2011, Factor and Merz [Discrete Appl. Math. 159 (2011), 100–103] defined the

(

1
,
2

)

\left(1,2)

-step competition graph of a digraph. Given a digraph

D
=

(

V
,
A

)

D=\left(V,A)

, the

(

1
,
2

)

\left(1,2)

-step competition graph of D, denoted

C

1
,
2

(

D

)

{C}_{1,2}\left(D)

, is a graph on

V

(

D

)

V\left(D)

, where

x
y
∈
E

(

C

1
,
2

(

D

)

)

xy\in E\left({C}_{1,2}\left(D))

if and only if there exists a vertex

z
≠
x
,
y

z\ne x,y

such that either

d

D
−
y

(

x
,
z

)

=
1

{d}_{D-y}\left(x,z)=1

and

d

D
−
x

(

y
,
z

)

≤
2

{d}_{D-x}(y,z)\le 2

or

d

D
−
x

(

y
,
z

)

=
1

{d}_{D-x}(y,z)=1

and

d

D
−
y

(

x
,
z

)

≤
2

{d}_{D-y}\left(x,z)\le 2

. They also characterized the (1, 2)-step competition graphs of tournaments and extended some results to the

(

i
,
j

)

\left(i,j)

-step competition graphs of tournaments. In this paper, the definition of the (1, 2)-step competition graph of a digraph is generalized to a hypertournament and the (1, 2)-step competition graph of a k-hypertournament is characterized. Also, the results are extended to

(

i
,
j

)

\left(i,j)

-step competition graphs of k-hypertournaments.
The shifting Nile and the origins and development of ancient Karnak
Authors: Charloux Guillaume , Abady Mahmoud Mona A. , Elnasseh Ahmed M.S. , Marchand Sylvie
Published: June 2021

Following two centuries of research at Karnak, our understanding of the origins and development of this famous ancient Egyptian temple complex remains limited. Recent archaeological excavation in the Ptah temple, however, has reached its earliest levels, providing a first, securely dated stratigraphic sequence. Despite flood risks, the development of the religious complex c. 2200–2000 BC was made possible by the retreating Nile riverbank. Thus, the river and the expanding Karnak temple complex played major roles in the takeover of Egypt by the Eleventh Dynasty rulers and the growth of the new capital at Thebes, a potent combination of forces—fluvial, religious and secular—encountered among other early state powers.
Black and Blue
Authors: Johnson Wesley
Published: June 2021

This mystory explores alienation in a law enforcement family and anti-racist allyship after the 2012 murder of Florida teen Trayvon Martin. Situated within key circuit of culture moments of identity and representation, I use the popular song “What It Means” by Drive-By Truckers (2016) and my personal experience to address whiteness. Colorblindness and fragility are twin components of whiteness in post-racial America that animate alienation and allyship. Both embodied analyses of pop culture and personal experience describe white identity and white privilege at the interpersonal and intercultural level.
Fugitive State
Authors: Hernandez Jillian
Published: June 2021

This essay engages the activism of Oluwatoyin “Toyin” Salau, along with Black feminist cultural productions such as the 2019 song “Almeda” by Solange and Melina Matsoukas’s 2019 film Queen and Slim, to offer a cimarrona approach for practicing Florida study. The cimarrona is a rebellious being who can lead us to apply a radical lens for understanding life, freedom struggles, and death in Florida—one that underscores the refusal of Blackness, which we can understand as a form of fugitivity. I argue that these Black feminist works evoke Florida as a Black Atlantic site and freedom route.
The Developed/Developing Country Division in the Global Economy: Losing Traction in the COVID-19 Era?
Authors: Brandi Clara , Weinhardt Clara
Published: June 2021

This essay revisits the developed/developing country division in the global economy in the light of the economic repercussions of the COVID-19 pandemic. A trend that precedes the pandemic has been a seeming detachment of the binary distinction between “developed” versus “developing” countries and what has been described as growing economic diversity in the so-called “developing world.” While emerging markets such as Brazil, India, or China have been able to catch up economically with the “developed” world, many African, Middle Eastern, or South Asian countries are increasingly marginalized in the global economy. At the same time, there is an increasing recognition that poverty is rising within the so-called “developed” world. Against this context, we investigate whether the economic repercussions of the COVID-19 pandemic reinforce this trend and further blur the developed/developing country divide in the global economy. We find a nuanced picture that contains elements of both continuity and change: while the short-term implications of the COVID-19 pandemic cut across the developed/developing country distinction, its long-term economic repercussions largely reiterate the divide—with the exception of China among the emerging markets.
Sorption of molecular hydrogen on the graphene-like matrix doped by N- and B-atoms
Authors:   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Kartel M. T. , Lobanov V. V. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Demyanenko E. M. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Bo Wang ,   Ningbo University of Technology China, Grebenyuk A. G. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Karpenko O. S. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
Published: June 2021

The regularities of interaction of hydrogen molecules with graphene-like planes, where two carbon atoms are replaced by nitrogen or boron atoms, have been studied by the methods of quantum chemistry (DFT, B3LYP, 6-31G**). To take into account the dispersion contributions to the energy of formation of intermolecular complexes that occur during the formation of adsorption supramolecular structures, Grimme’ dispersion correction is used - D3. To study the effect of the size of a graphene-like cluster on the energy of molecular hydrogen chemisorption, polyaromatic molecules (PAM) are used of pyrene, coronene and that consisting of 54 carbon atoms, as well as their nitrogen- and boron-containing analogues where N- and B-atoms are placed in a para-position relative to each other, in the so-called piperazine configuration. The insertion of a heteroatom changes the structure of the transition state and the mechanism of chemisorption. An analysis of the results of quantum chemical calculations showed the highest exothermic dissociative adsorption of the H2 molecule on B-containing graphene-like ones. For N-containing PAM, the exothermicity of the mentioned reaction is somewhat lower, for it a possibility of desorption of atomic hydrogen desorption the surface of the latter with subsequent recombination in the gas phase has been also shown. At the same time, for models of pure graphene-like layer, the data obtained indicate the impossibility of chemisorption of molecular hydrogen. Without a complete analysis of the results for all the possible locations of the pair of hydrogen atoms (formed due to dissociation of the H2 molecule) bound by nitrogen-containing polyaromatic molecules, it can be noted that the dissociative chemisorption of the H2 molecule, regardless of the nature of heteroatom in the PAM, is thermodynamically more probable at the periphery of the model molecules than that in their centers.
Synthesis and catalytic properties of nitrogen-containing carbon nanotubes
Authors:   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Sementsov Yu. I. , Cherniuk O. A. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Zhuravskyi S. V. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Bo Wang ,   Ningbo University of Technology China, Voitko K. V. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Bakalinska O. M. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, Kartel M. T. ,   Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
Published: June 2021

Nitrogen-containing carbon nanotubes (CNTs) were synthesized by the CVD method on oxide catalysts of Al-Fe-Mo-O by adding acetonitrile or ethylenediamine to the carbon source (propylene), or completely replacing it, as well as impregnating the original CNTs with urea, followed by heat treatment. The structure of nitrogen-containing CNTs (N-CNT) was characterized by the method of Raman scattering, transmission electron microscopy (TEM), differential thermal and gravimetric analysis (DTA, DTG) and X-ray photoelectron spectroscopy (XPS). The influence of the synthesis method on the number and chemical state of nitrogen heteroatoms in the structure of the carbon matrix is found. According to the TEM, nitrogen-containing CNTs have a characteristic bamboo-like structure, which is less perfect compared to the structure of the original CNTs: the characteristic Raman bands (G and D) are shifted to higher frequencies, their half-width and band D intensity increase relative to G. This is also manifested in the lower thermal stability of nitrogen-containing CNTs. According to the XPS, the direct synthesis of nitrogen-containing CNTs increases the total content of nitrogen atoms and the proportion of pyrrolic and quaternary nitrogen against the background of a significant decrease in the amount of pyridinic form. This can be explained by the fact that nitrogen is evenly distributed throughout the carbon matrix of CNTs, and during nitriding of CNTs with urea, nitrogen is included mainly in the surface layers and defects, because the pyridine form is characteristic of the edge location of the nitrogen atom in the graphene plane.The catalytic effect of multilayer nitrogen-containing carbon nanotubes (N-CNT) on the kinetics of decomposition of hydrogen peroxide in aqueous solutions at different pH values is considered. It is concluded that the method of direct synthesis of nitrogen-containing CNTs allows to obtain more catalytically active carbon nanotubes containing more nitrogen, mainly pyrrolic and quaternary type. It has been found that regardless of the method of synthesis, the maximum catalytic activity in the decomposition of hydrogen peroxide is observed at pH 7.
Electromagnetic wave tunneling through an asymmetric three-layer structure containing a conductive negative-permittivity layer
Authors:   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine, Beletskii N. , Borysenko S. ,   O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine
Published: June 2021

Subject and Purpose. In the context of growing anticipation of fundamentally new optical and radiophysical devices, the present study is concerned with the total electromagnetic wave tunneling through an asymmetric three-layer structure such that contains a conductive negative-permittivity layer. The aim of this work is to recognize how the asymmetry property of this three-layer structure acts on the effect of total wave tunneling with the frequency dispersion of the conductive negative-permittivity layer taken into account. Methods and Methodology. The frequency-dependent conditions of the total electromagnetic wave tunneling through an asymmetric three-layer structure are sought by numerical simulations. A universal approach based on the introduction of dimensionless frequencies and dimensionless layer thicknesses allows us to numerically investigate conditions of the total electromagnetic wave tunneling for any desired frequencies and geometric parameters of the asymmetric three-layer structure. Results. It has been shown that the asymmetry property of the three-layer structure can significantly change the total electromagnetic wave tunneling conditions. It has been demonstrated that parameters of the asymmetric three-layer structure can be selected in such a way as to modify the total electromagnetic wave tunneling conditions toward a desired practical application of the structure. It has been found that a proper choice of the parameters can minimize the action of the three-layer structure asymmetry on the electromagnetic wave tunneling effect. Conclusion. Asymmetric three-layer structures can be of use to effectively change conditions of the total electromagnetic wave tunneling in an effort to provide devices under development with desired characteristics.
Directional radiation properties of two impedance monopoles mounted on a perfectly conducting rectangular screen
Authors:   V.N. Karazin Kharkiv National University, Yeliseyeva N. , Berdnik S. ,   V.N. Karazin Kharkiv National University, Katrich V. ,   V.N. Karazin Kharkiv National University
Published: June 2021

Subject and Purpose. Two impedance resonant monopoles of electric length 0.2 £ l / l £ 0.3 are mounted on a rectangular screen perpendicularly to the screen surface and studied for the directional radiation properties (directive gain and radiation patterns) depending on the monopole separation and the side length and aspect ratio of the screen. Methods and Methodology. A three-dimensional diffraction vector problem of two impedance monopoles mounted on a perfectly conducting rectangular screen is solved in terms of the uniform geometric theory of diffraction. Allowances are made for the diffracted field asymptotics of the secondary diffraction at the screen edges and for the electric current distribution asymptotics of a thin impedance dipole in the free space. Results. For a lattice of two impedance monopoles mounted on a rectangular screen, 3-D programs have been developed for calculating its radiation patterns, directive gain Dmax at a radiation maximum, and radiation resistance in view of the secondary diffraction at the screen edges. The radiation pattern shaping for the diffraction and total fields and the directive gain Dmax have been analyzed depending on the monopole separation x / l  0.1...1, the screen side length x / l  1.2…4, and the screen aspect ratio W / L  0.5…3. It has been shown that the so obtained optimum separation x opt  0.65, optimum length Lopt and optimum ratio (W / L) opt make Dopt three times greater than the lowest Dmax value. Conclusions. The three-dimensional vector problem of field diffraction of two impedance monopoles mounted on an ideally conducting rectangular screen has been solved. It is of interest that given an optimum monopole separation xopt and an optimum side length Lopt of the square screen, a lattice of two monopoles offers a greater radiation resistance and a two times larger Dopt than a single monopole on the same screen does. The developed computational programs and the obtained numerical results enable efficient actual wireless communication systems to be modelled for both ideally conducting and impedance resonant monopoles.
Dogs are final hosts of Sarcocystis morae (Apicomplexa: Sarcocystidae): First report of this species in Hungary and its region – Short communication
Authors: Tuska-Szalay Barbara , Takács Nóra , Kontschán Jenő , Vizi Zsuzsanna , Hornok Sándor
Published: June 2021

In this study, faecal samples of four American Staffordshire terrier dogs (used for illegal fighting) were analysed by DNA extraction, molecular-phylogenetic and parasitological methods, in order to examine the occurrence of protozoan, apicomplexan parasites. In one sample, the DNA of Sarcocystis morae was shown to be present. This species was identified based on 100% identity with already reported sequences of S. morae from cervids in Lithuania and Spain. The result was also confirmed by phylogenetic analysis. The sporocysts of the canine S. morae isolate measured 14.95 × 9.75 μm on average. This is the first molecular evidence in support of the final host role of domestic dogs in the life cycle of S. morae. The most likely source of the infection was raw meat given to the examined dog to increase its physical achievement. In conclusion, under similar circumstances dogs may participate in the life cycle of S. morae in a ‘natural way’, shedding sporocysts/oocysts when used for hunting or taken to walks in forested areas.
SECURITY CAPABILITY ANALYSIS OF COGNITIVE RADIO NETWORK WITH SECONDARY USER CAPABLE OF JAMMING AND SELF-POWERING
Authors: Dan Ngoc Pham Thi , Van Khuong Ho , Ngoc Hanh Dang , Dac Thiem Do , Huu Phong Nguyen , Que Son Vo , Ngoc Son Pham , Pham Lien Hong
Published: June 2021

This paper investigates a cognitive radio network where a secondary sender assists a primarytransmitter in relaying primary information to a primary receiver and also transmits its own information toa secondary recipient. This sender is capable of jamming to protect secondary and/or primary informationagainst an eavesdropper and self-powering by harvesting radio frequency energy of primary signals.Security capability of both secondary and primary networks are analyzed in terms of secrecy outageprobability. Numerous results corroborate the proposed analysis which serves as a design guidelineto quickly assess and optimize security performance. More importantly, security capability trade-offbetween secondary and primary networks can be totally controlled with appropriate selection of systemparameters.
WEIGHTED STRUCTURAL SUPPORT VECTOR MACHINE
Authors: Cuong Nguyen The , Phung Huynh The
Published: June 2021

In binary classification problems, two classes of data seem to be different from each other. It is expected to be more complicated due to the clusters in each class also tend to be different. Traditional algorithms as Support Vector Machine (SVM) or Twin Support Vector Machine (TWSVM) cannot sufficiently exploit structural information with cluster granularity of the data, cause limitation on the capability of simulation of data trends. Structural Twin Support Vector Machine (S-TWSVM) sufficiently exploits structural information with cluster granularity for learning a represented hyperplane. Therefore, the capability of S-TWSVM’s data simulation is better than that of TWSVM. However, for the datasets where each class consists of clusters of different trends, the S-TWSVM’s data simulation capability seems restricted. Besides, the training time of S-TWSVM has not been improved compared to TWSVM. This paper proposes a new Weighted Structural - Support Vector Machine (called WS-SVM) for binary classification problems with a class-vs-clusters strategy. Experimental results show that WS-SVM could describe the tendency of the distribution of cluster information. Furthermore, both the theory and experiment show that the training time of the WS-SVM for classification problem has significantly improved compared to S-TWSVM.
EFFICIENT CNN-BASED PROFILED SIDE CHANNEL ATTACKS
Authors: Tran Ngoc Quy , Nguyen Hong Quang
Published: June 2021

Profiled side-channel attacks are now considered as powerful forms of attacks used to break the security of cryptographic devices. A recent line of research has investigated a new profiled attack based on deep learning and many of them have used convolution neural network (CNN) as deep learning architecture for the attack. The effectiveness of the attack is greatly influenced by the CNN architecture. However, the CNN architecture used for current profiled attacks have often been based on image recognition fields, and choosing the right CNN architectures and parameters for adaption to profiled attacks is still challenging. In this paper, we propose an efficient profiled attack for on unprotected and masking-protected cryptographic devices based on two CNN architectures, called CNNn, CNNd respectively. Both of CNN architecture parameters proposed in this paper are based on the property of points of interest on the power trace and further determined by the Grey Wolf Optimization (GWO) algorithm. To verify the proposed attacks, experiments were performed on a trace set collected from an Atmega8515 smart card when it performs AES-128 encryption, a DPA contest v4 dataset and the ASCAD public dataset
Vertical fluxes in the upper ocean
Authors:   , Freilich Mara
Published: June 2021

Oceanic fronts at the mesoscale and submesoscale are associated with enhanced vertical motion, which strengthens their role in global biogeochemical cycling as hotspots of primary production and subduction of carbon from the surface to the interior. Using process study models, theory, and field observations of biogeochemical tracers, this thesis improves understanding of submesoscale vertical tracer fluxes and their influence on carbon cycling. Unlike buoyancy, vertical transport of biogeochemical tracers can occur both due to the movement of isopycnals and due to motion along sloping isopycnals. We decompose the vertical velocity below the mixed layer into two components in a Lagrangian frame: vertical velocity along sloping isopycnal surfaces and the adiabatic vertical velocity of isopycnal surfaces and demonstrate that vertical motion along isopycnal surfaces is particularly important at submesoscales (1-10 km). The vertical flux of nutrient, and consequently the new production of phytoplankton depends not just on the vertical velocity but on the relative time scales of vertical transport and nutrient uptake. Vertical nutrient flux is maximum when the biological timescale of phytoplankton growth matches the vertical velocity frequency. Export of organic matter from the surface and the interior requires water parcels to cross the mixed layer base. Using Lagrangian analysis, we study the dynamics of this process and demonstrate that geostrophic and ageostrophic frontogenesis drive subduction along density surfaces across the mixed layer base. Along-front variability is an important factor in subduction. Both the physical and biological modeling studies described above are used to interpret observations from three research cruises in the Western Mediterranean. We sample intrusions of high chlorophyll and particulate organic carbon below the euphotic zone that are advected downward by 100 meters on timescales of days to weeks. We characterize the community composition in these subsurface intrusions at a lateral resolution of 1–10 km. We observe systematic changes in community composition due to the changing light environment and differential decay of the phytoplankton communities in low-light environments, along with mixing. We conclude that advective fluxes could make a contribution to carbon export in subtropical gyres that is equal to the sinking flux.
Structural changes in V2O5-P2O5 glasses: non-constant force field molecular dynamics and IR spectroscopy
Authors: Raskovalov A. A. , Saetova N. S. , Popov I. S.
Published: June 2021

Quasi-binary phosphate-vanadate glasses have been studied by both IR spectroscopy and a novel method of molecular dynamics with a non-constant force field. This method is used for the self-assembly of structural models of glasses. The obtained models and the glass network structure are analyzed quantitatively using element distribution by the number of R–O–R bonds (R is phosphorous or vanadium) and 4-, 6-, and 8-membered cycles. The bends on the concentration dependences of atoms distribution in the second coordination sphere agree well with changing the shape of IR spectra. Based on the cycle analysis, the formation of cycles is shown to be more characteristic for vanadate fragments that can form 4-membered cycles, which, according to Zachariasen’s rule, negatively affects glass-forming ability.
Effect of combination antihypertensive therapy, including renin-angiotensin-aldosterone system inhibitors, on oxidative stress and arterial remodeling in hypertensive patients with heart failure with preserved ejection fraction
Authors: Akhilgova Z. M. , Roitman A. P. , Rakova N. G. , Bugrov A. V. , Pavlovskaya E. A. , Zastrozhin M. S. , Avtandilov A. G.
Published: June 2021

Aim. To study the effect of triple combination therapy on oxidative stress and arterial remodeling in hypertensive patients with heart failure with preserved ejection fraction (HFpEF).

Material and methods. The study involved 76 people with diagnosed HFpEF. After a comprehensive examination, patients were randomized into two equal groups: first group — patients who received perindopril 10 mg, indapamide 2,5mg and amlodipine 5 mg; second — patients who received losartan 100 mg, indapamide 2,5 mg, amlodipine 5 mg. Before and 16 weeks after the therapy initiation, cardiac ultrasound, assessment of endothelial function with estimating endothelium-dependent vasodilation, assessment of vascular stiffness by photoplethysmography and compression oscillometry were carried out. The plasma concentration of oxidative stress marker 8-isoprostane was studied.

Results. During the follow-up period, a significant improvement in endothelial function was noted: in the first group — from 8,1% to 11,4% (p=0,001), in the second — from 5,8% to 8,3% (p=0,0007). In both groups, there was an improvement in microvessel elasticity: a significant decrease in specific peripheral vascular resistance, as well as a significant decrease in total peripheral resistance in the first group (p<0,002) and a tendency to decrease in the second one (p>0,05). There was a significant increase in the stiffness of the aorta and muscular arteries in both groupsю In the first group, a stiffness index decreased from 10,38 m/s to 8,33 m/s (p<0,0001), in the second — from 10,6 m/s to 9,3 m/s (p<0,01). In addition, resistance index in the first group decreased from 71,5% to 60% (p<0,0001), while in the second — from 68% to 60% (p=0,006). Also, both groups showed a significant decrease in the left atrial diastolic dimension and the left atrial volume index. A decrease in the 8-isoprostane plasma levels was noted, which indicates a decrease in oxidative stress.

Conclusion. Oxidative stress, which develops due to chronic systemic inflammation, plays a key role in the pathogenesis of HFpEF. The results obtained show an improved endothelial function as a result of decrease in oxidative stress, which is accompanied by an improvement in vessel wall elasticity, thereby slowing down the heart failure progression.
Obesity as a risk factor for cardiovascular disease: focus on ultrasound
Authors: Tsygankov D. A. , Polikutina O. M.
Published: June 2021

For many decades, obesity has been one of the main risk factors for cardiovascular disease. Despite medical advances, the obesity increases contribution to morbidity and mortality from cardiovascular diseases. Numerous anthropometric criteria for obesity are well-studied, simple and inexpensive tools for diagnosing overweight in the population. However, their accuracy is comparatively low. In particular, it is impossible to determine body composition based on these criteria, which is a key point in cardiovascular risk stratification. Despite the relatively short period of ultrasound practice for obesity diagnosis, convincing evidence has already been obtained of their high accuracy and effectiveness in predicting the risk of cardiovascular disease. Given the continuous improvement of ultrasound equipment, the studied criteria should be implemented in routine clinical and research practice. This literature review describes the central parameters used in the ultrasound diagnosis of obesity, their contribution to both conventional risk factors and cardiovascular diseases itself.
Hormonal determinants of prehypertension in a random sample of St. Petersburg residents: data from the ESSE-RF study
Authors: Erina A. M. , Boyarinova M. A. , Moguchaya E. V. , Kolesova E. P. , Vasilyeva E. Yu. , Alieva A. S. , Paskar N. A. , Rotar O. P. , Baranova E. I. , Konradi A. O. , Shlyakhto E. V.
Published: June 2021

Aim. To determine the association of prehypertension (PHTN) with cardiometabolic and hormonal factors in a population sample of St. Petersburg residents.

Material and methods. As part of the ESSE-RF epidemiological study, a random sample of 1600 residents of St. Petersburg at the age of 25-64 was examined. All participants signed informed consent and completed the questionnaires. Anthropometry, fasting venous blood sampling, blood pressure (BP) measurements were performed. BP was measured by the OMRON BP monitor (Japan) twice on the right hand in a sitting position. Mean BP was calculated. Respondents, depending on the BP level and availability of antihypertensive therapy, were divided into 3 groups: optimal BP (<120/80 mm Hg), PHTN (120-139/80-89 mm Hg) and HTN (≥140/90 mm Hg or antihypertensive therapy). Blood levels of insulin, N-terminal pro-brain natriuretic peptide (NT-proBNP), thyroid-stimulating hormone, C-reactive protein (CRP), morning cortisol, leptin, adiponectin were assessed. The insulin resistance index was calculated using the Homeostatic Model Assessment (HOMA) according to the following equation: glucose (mmol/l) × insulin (μIU/ml))÷22,5. Mathematical and statistical data analysis was carried out using the SPSS Statistics 26 program.

Results. The data from 1591 participants were analyzed. Among the surveyed persons, women predominated (n=1025; 64,4%). With BP increase from optimal to PHTN, HTN, the levels of CRP, insulin, HOMA-IR and leptin increases in male and female respondents. In addition, there is an increased prevalence of hyperinsulinemia and insulin resistance in the female population. Multiple logistic regression, adjusted for sex, age, obesity ( body mass index ≥30 kg/m2) and waist circumference (≥102 cm for men and 88 cm for women), revealed associations of PHTN with an increase in insulin >173,0 pmol/L (2,99 [1,22; 7,36], p=0,017), HOMA-IR >2,9 (2,12 [1,42; 3,19], p<0,0001) and associations of HTN with an increase in insulin >173,0 pmol/L (2,14 [1,30; 3,54], p=0,003), HOMA-IR >2,9 (1,83 [1,39; 2,42 ], p536 nmol/L (1,59 [1,25; 2,05], p125 pg/ml (2,05 [1,32; 3,20], p=0,002).

Conclusion. In a random sample of St. Petersburg residents, the presence of hyperinsulinemia increases the risk of PHTN and insulin resistance by 3 and 2 times, respectively.
Eating habits among the Omsk Oblast population and poor nutrition in association with cardiovascular diseases according to the ESSE-RF2 study
Authors: Viktorova I. A. , Stasenko V. L. , Shirlina N. G. , Muromtseva G. A. , Livzan M. A.
Published: June 2021

Aim. To assess the prevalence of eating habits among the Omsk Oblast population and their association with cardiovascular diseases (CVDs) according to the ESSERF2 study.

Material and methods. In the ESSE-RF2 study with persons aged 25-64 years (random sample, n=1648), the dietary habits of 21 food groups were assessed using the questionnaire method. Results. Insufficient consumption of vegetables and fruits was revealed in 60,0% and 68,7% of the region’s population, which is 1,5-2,2 times higher than among

Russians. The daily intake of cereals is 2,3 times higher than that of pasta, especially in those with CVDs. In the region, poultry is preferred. Poultry at least once a week is consumed by 91,7% of Omsk residents, red meat — 74,8%, and fish — only 35,2% (vs 84,7%, 83,1% and 65,1% in Russians, respectively). The daily intake of liquid dairy products is low. Cheese and cottage cheese is consumed significantly lower than the national average, while legumes — 4 times lower. The presence of confectionery in the daily diet of 40,3% of Omsk residents looks more favorable than the average among Russians. In addition, 50% of the population eat pickles only 1-2 times a month (significantly less than in Russia). On the contrary, 60,9% of Omsk residents regularly (daily-weekly) consume meat and sausages (56,0% in Russia, p=0,000). Omsk residents with CVDs refrain from excessive consumption of sugar, other sweets, meat and sausages, pickles and marinades. They are almost 2 times more likely to exclude red meat from the diet or reduce its daily consumption than people without CVDs. Salting of cooked food, consumption of vegetables and fruits, fish, seafood and dairy products practically did not depend on CVDs.

Conclusion. The food habits of Omsk residents differs from the national one in many products. People with CVDs have unfavorable eating habits: reduced consumption of fresh vegetables, fruits, fish, seafood, legumes and nuts. Patients do not change their diet in favor of cardioprotective products and decrease in adding more salt. Although, they more often refuse meat and sausages, pickles, marinades, sweets, and pasta, and increase the consumption of cereals.
Socioeconomic determinants of eating behavior
Authors: Tsygankova D. P. , Barbarash O. L.
Published: June 2021

Dietary modifications are an effective method for the prevention and treatment of cardiovascular diseases and their risk factors: hypertension, hyperglycemia, obesity, dyslipidemia. Large-scale studies have shown the causal relationship between eating behavior (predominant consumption of fruits, vegetables, processed meat or trans fats) and major socially significant diseases (coronary artery disease, diabetes, cancer). Based on the data obtained, national and international dietary guidelines have been developed to prevent these diseases. However, adherence to healthy diets is still low. In this connection, many researches have suggested the influence of socioeconomic status on eating behavior. The aim of this review was to analyze and discuss the main socioeconomic determinants (income and education level, marital status) of the population’s eating behavior.
Changes in mortality rates from acute types of coronary artery disease in Russia for the period from 2015 to 2019
Authors: Drapkina O. M. , Bubnova M. G. , Samorodskaya I. V. , Akulova O. A. , Aronov D. M.
Published: June 2021

Aim. To identify regional specifics of changes in mortality rates from acute types of coronary artery disease (CAD) in 82 Russian regions for the period from 2015 to 2019.

Material and methods. The study used data from the Federal State Statistics Service of Russia on mortality from acute CAD types in 82 Russian regions. Standardized death rates (SDRs) for 2015 and 2019 were estimated based on the European standard. We analyzed the SDRs of the population from acute (primary) and recurrent myocardial infarction (MI), other acute CAD types (I21-I22, I24.8 in the 10th revision of the International Statistical Classification of Diseases and Related Health Problems (ICD-10)).

Results. Over the period from 2015 to 2019, mortality from all acute CAD types decreased by 21%, from acute MI — by 9%, from recurrent MI — by 22%, from any MI (acute/recurrent) recurrent — by 14%, and from other CAD types — by 21%. A decrease in mortality from all acute CAD types was recorded in 69 regions, from acute MI — in 58 regions, and recurrent MI — in 62 regions. However, a simultaneous decrease in SDRs from each of the acute CAD types (acute MI, recurrent MI and other acute CAD types) for the period 2015-2019 occurred only in 29 Russian regions. An increase in mortality from all acute CAD types was noted in 14 regions and from any MI — in 21 regions. The coefficient of variation (Cv) for recurrent MI and other acute CAD types of 69% and 103%, respectively, in 2015 and its growth (up to 75% and 134%, respectively) by 2019 indicate growing problems with the coding of death causes.

Conclusion. In 2019, compared to 2015, a decrease in mortality from acute CAD types was recorded in most Russian regions. The identified regional specifics require clarification of approaches to death cause coding and the introduction of additions to mortality reduction programs, taking into account the specifics of each Russian region.
Coronavirus disease 2019: features of comprehensive cardiac and pulmonary rehabilitation
Authors: Bubnova M. G. , Shlyakhto E. V. , Aronov D. M. , Belevsky A. S. , Gerasimenko M. Yu. , Glezer M. G. , Gordeev M. N. , Drapkina O. M. , Ivanova G. E. , Ioseliani D. G. , Karamnova N. S. , Kosmacheva E. D. , Kuleshov A. V. , Kukshina A. A. , Lyadov K. V. , Lyamina N. P. , Makarova M. R. , Meshcheryakova N. N. , Nikityuk D. B. , Pasechnik I. N. , Persiyanova-Dubrova A. L. , Pogonchenkova I. V. , Svet A. V. , Starodubova A. V. , Tutelian V. A.
Published: June 2021

The expert consensus of the Russian communities discusses the issues of comprehensive medical rehabilitation of patients with coronavirus disease 2019 (COVID-19). COVID-19 is a contagious infectious disease that can cause pulmonary, cardiac, motor, metabolic, neurocognitive and mental disorders, that is, multiple organ dysfunction. COVID-19 survivors, especially after a severe clinical course, face serious psychological and physical problems, posttraumatic stress, cognitive dysfunction, nutritional deficiencies and exacerbation of concomitant chronic diseases. Some patients, regardless of the COVID-19 severity, have a long clinical course of the disease (“chronic-COVID”, “long COVID”). There is evidence of post-acute COVID-19 syndrome. In this regard, patients after COVID-19 will need rehabilitation measures. The expert consensus of the Russian communities presents general principles, stages and aspects of medical rehabilitation after COVID-19, indications and contraindications for rehabilitation interventions. The paper includes recommendations on comprehensive cardiac and pulmonary rehabilitation, as well as specifics of rehabilitation care for different COVID-19 courses within the national three-stage rehabilitation system.
The problem of treatment of acute thrombosis and limb ischemia in patients with a new coronavirus infection
Authors: Editorial Article
Published: June 2021

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A SUBJETIVIDADE DE ESTUDANTES COM DEFICIÊNCIA EM CURSOS TÉCNICOS NA PERSPECTIVA DE GONZÁLEZ REY
Authors: Armas Louise Dall'Agnol de , Bisol Claudia Alquati
Published: June 2021

O artigo apresenta um recorte de pesquisa que analisou a configuração de sentidos subjetivos de estudantes com deficiência no que tange à escolarização em cursos técnicos integrados ao ensino médio. Incialmente, o texto contextualiza a inclusão e a exclusão na escola e no trabalho, aspectos que perpassam a perspectiva inclusiva na modalidade integrada da educação profissional de nível médio, e apresenta a subjetividade compreendida por González Rey, aporte teórico utilizado nesta pesquisa. Participaram do estudo quatro estudantes com deficiência matriculados em diferentes cursos técnicos integrados ao ensino médio de uma unidade do Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul (IFRS). Com a proposta da Epistemologia Qualitativa, o momento de construção da informação com cada participante, realizado de forma on-line, foi constituído de uma entrevista com perguntas abertas e fechadas, um diálogo mediado por fotografias e uma entrevista com perguntas abertas. A interpretação das falas dos participantes revelou as emoções e as produções simbólicas vivenciadas na escola e a perspectiva de ingresso no mundo do trabalho. Compreende-se a subjetividade humana de forma relacional, em que os sujeitos em suas interações com os outros e os espaços sociais produzem sentidos subjetivos, os quais, nos participantes da pesquisa, evidenciam as faces da inclusão e exclusão vividas pelas pessoas com deficiência na escola e na sociedade.