bluuebunny/crossref_metadata_2025 huggingface dataset:
A Re-evaluation of Amputations versus Rotationplasties in the Reconstruction of Tumors about the Knee
Authors: Tud Abigail Rivera , Singh Tanveer , Nathan Saminathan Suresh
Published: September 2023

Background
Rotationplasties are considered superior to above knee amputations (AKA) in the reconstruction of tumor-ablated limbs. We compared both procedures performed for patients with musculoskeletal tumors about the knee, to answer the following:
1. Are subjective functional outcomes among knee rotationplasty (KRP) patients superior to above knee amputees?
2. Are objective gait parameters of above knee amputees inferior to rotationplasty patients?
Methods
We evaluated 19 patients who had undergone AKA or KRP for distal femur or proximal tibia tumors. Four underwent AKA, while 7 had KRP. Patients were assessed using motion capture and force plate array analysis. Subjective function was assessed using the Musculoskeletal Tumor Society (MSTS) Score.
Results
Ten males and 9 females were followed an average 4.0 ± SD5.5 years. Mean age was 31 ± SD10 years. Above-knee amputees showed greater thigh acceleration on the affected side (22m/s2 ± SD 9 versus 13m/s2 ± SD6 for the unaffected side, p=0.02) whereas rotationplasty patients exhibited greater acceleration on the normal side (29m/s2 ± SD7 versus 15m/s2 ± SD5, p=0.0009). Amputees exerted stronger thigh forces (166N ± SD56 versus 105N ± SD47, p=0.005) on the operated side compared to the unaffected side, while KRP patients generated weaker thigh forces on the post-operative side (105N ± SD42 versus 208 ± SD62, p=0.02). MSTS scores were not statistically significant between the two groups.
Conclusions
Above-knee amputated limbs are stronger and more functionally normal than rotationplasty limbs. Advances in prosthetic design may eventually circumvent the need for this more complex procedure.
A new method for energizing multi-radiofrequency ion trap electrodes with adjustable amplitude and identical phase maintenance
Authors: Wang Qikun , Wang Zhao , Wang Xu
Published: September 2023

A helical resonator with a certain resonant frequency and a high-quality factor (Q-factor)[1] is critical for an ion trap system, which results in a larger trap depth, longer trap time, and lower RF noise. Here we propose a new method for energizing amplitude-adjustable multiple RF ion trap electrodes. By dividing the output of the helical resonator into multiple circuits and simultaneously energizing the ion trap multi-RF electrodes, each circuit is composed of capacitors connected in series, and the desired amplitude is applied to the ion trap RF electrodes using capacitive voltage dividing. In contrast, the capacitance of the multi-RF capacitors connected in series is determined by three constraints. Different voltages for each circuit are realized while keeping the phase consistent. To demonstrate our proposed method in experiments, we first determine that the theory is feasible through circuit simulations and then confirm the method’s validity by comparing the measured results with the analog simulations. Our method can be applied to the ion trap structure of multiplexed RF electrodes, which contributes to the realization of ion traps for multiplexed RF electrodes.
Statistical Inference on the Three Parameters Burr-XII Distribution Using the Runge-Kutta Method
Authors: Maswadah M.
Published: September 2023

In parameter estimation techniques, there are many methods for estimating the distribution parameters in life data analysis. However, most of them are less efficient than the Bayes method based on the informative prior. Thus, the main objective of this study is to present an optimal estimation method using the Runge-Kutta technique for estimating the three parameters of the Burr type-XII distribution. The Runge-Kutta estimates are compared with the Bayesian estimates based on the informative gamma and kernel priors via an extensive Monte Carlo simulation. The simulation results indicated that the Runge-Kutta method is highly favorable, which provides better estimates and outperforms the Bayes method based on the generalized progressive hybrid censoring scheme. Finally, two real datasets are presented to illustrate the efficiency of the proposed methods.
Enhancing Intrusion Detection Systems: A Comparative Study of Machine Learning Techniques for Cyber Security
Authors: Nabi Faisal
Published: September 2023

Our research aims to improve automated intrusion detection by developing a highly accurate classifier with minimal false alarms. The motivation behind our work is to tackle the challenges of high dimensionality in intrusion detection and enhance the classification performance of classifiers, ultimately leading to more accurate and efficient detection of intrusions. To achieve this, we conduct experiments using the NSL-KDD data set, a widely used benchmark in this domain. This data set comprises approximately 126,000 samples of normal and abnormal network traffic for training and 23,000 samples for testing. Initially, we employ the entire feature set to train classifiers, and the outcomes are promising. Among the classifiers tested, the J48 tree achieves the highest reported accuracy of 79.1 percent. To enhance classifier performance, we explore two projection approaches: Random Projection and PCA. Random Projection yields notable improvements, with the PART algorithm achieving the best-reported accuracy of 82.0%, outperforming the original feature set. Moreover, random projection proves to be more time-efficient than PCA across most classifiers. Our findings demonstrate the effectiveness of random projection in improving intrusion detection accuracy while reducing training time. This research contributes valuable insights to the cybersecurity field and fosters potential advancements in intrusion detection systems.
An examination of the relationship between volatility, liquidity and trading activity
Authors: Regaieg Boutheina , Hassini Nafissa
Published: September 2023

We investigate the influence of the firm value on the relationship between equity trading activity, market liquidity and return volatility at the portfolio level. For the different firm-value portfolio, we find that trading activity is negatively associated with liquidity but it is positively associated with volatility so higher trading activity leads to more volatile returns. For the very largest firm-value portfolio, the volatility-liquidity relationship is negative. However, this relationship is positive for other portfolios.
Optimal Consumption-Investment and CAPMs under a Quadratic Model based on Homothetic Robust Epstein--Zin Utility
Authors: Kusuda Koji , Kikuchi Kentaro , Batbold Bolorsuvd
Published: September 2023

This paper presents a theoretical analysis of the consumption-investment problem and CAPMs based on homothetic robust Epstein--Zin utility under a quadratic security market model in which interest rates, the market price of risk, the variances and covariances of asset returns, and inflation rates are stochastic. Robust investors first determine the ''conditional worst-case probability'' of minimizing utility for a given consumption and investment and then determine the optimal consumption and investment that maximizes utility under the conditional worst-case probability. The optimal consumption-investment decisions implicitly determine the worst-case probability. We clarify the theoretical structures of i) the budget constraint and market price of risk under the conditional worst-case probability; ii) the market price of risk under the worst-case probability; iii) the CAPMs; and iv) the CAPMs under the worst-case probability.
JEL classification C61, D81, G11
The dynamics of hate speech spreading on the telegram-channels of the popular kremlin propagandists
Authors: Steblyna Nataliia
Published: September 2023

Introduction. Telegram is the most popular social network for consuming news in Ukraine. However, in a full-scale invasion, Kremlin propagandists are trying to use popular digital platforms to promote hostile narratives.
Relevance of the study. Monitoring the most popular Telegram channels is an extremely demanding task. It is important to detect the signs of propaganda content, to study the dynamics of its distribution in order to effectively counter the numerous information operations of the enemy.
Research objective is to propose a mechanism (computer analysis of texts in the Telegram channels of leading Russian propagandists) for detecting hate speech usage, describe the dynamics of harmful content spread and to define its formal signs.
Methodology. Computer analysis is used to search for keywords that indicate the use of hate speech, as well as collocation analysis and semantic analysis. The research material was the most popular telegram channels of leading Russian propagandists: Solovyov, Simonyan, Voenkor Kotenok Z.
Results. Analysis of the mentions dynamics shows that the topic of «Nazism / Fascism» has similar bursts of attention for all three propagandists. Before the invasion single mentions were recorded, but in March-April there was a significant increase. At the end of April, when the Russians left Northern Ukraine, the number of mentions dropped significantly. The percentage of keywords remained quite high in the summer, but continued to decrease until the retreat of the Russians from Kharkiv and Kherson regions. Analysis of collocations showed that when highlighting the topic of «Nazism / Fascism», Russian propagandists most often associate it with Ukraine.
Conclusions. The study showed that the hate speech towards Ukraine in the Telegram channels of popular Russian propagandists has its own dynamics. The number of posts with hate speech increases or decreases depending on the situation on the front lines. The organized nature of the hate speech spread can be considered as a formal feature of Russian propaganda and to help identify it in further research.
Ukrainian cultural and artistic Youtube channels during the first year of the war of the Russian invasion of Ukraine
Authors: Lytvynenko Anastasia
Published: September 2023

Introductions. The destruction of Ukrainian culture is a key element of Russian aggression. Falsification of Ukrainian history is a common tactic of the Russian Federation in its efforts to undermine Ukraine’s independence, as it seeks to deny the existence of Ukrainian identity and delegitimize its right to statehood, language, and culture. Therefore, the role of cultural content in Ukraine during a full-scale war is indeed of strategic importance.
The aim of study. The purpose of the study is to analyze the transformations in the work of Ukrainian YouTube channels covering culture, art, and history after the full-scale Russian invasion of Ukraine on February 24, 2022. Among the tasks of the research: to identify changes in the content of Ukrainian-language YouTube channels on cultural and artistic topics after February 24, 2022, to track how the indicators of the number of views and the number of subscribers on the selected YouTube channel changed during the research period.
Methodology. The main method is content analysis. All videos on the 10 YouTube channels, published after February 24, 2022 - the date of the start of Russia’s full-scale invasion of Ukraine, and up to and including February 24, 2023 - were processed. Using the quantitative method, on the last day of each month, the indicators of the number of subscribers and views of each of the ten analyzed channels were recorded.
Results and conclusions. Content analysis of 10 Youtube channels showed that their authors adapted the content to the realities of wartime. In addition, the results of the increase in the number of subscribers and views of each channel, the audience showed the need of society for such content. During the year of the war, authors of Youtube channels created hundreds of hours of content to combat propaganda narratives, fakes, oppose Russian aggression through culture in the world, and popularize the heritage of Ukrainian artists and cultural figures.
Television writing on current affairs and documentaries in the coverage of the siege of Mariupol
Authors: Melnykova-Kurhanova Olena , Yatchuk Olha
Published: September 2023

The article analyses documentaries and journalistic videos about the siege of Mariupol during the Russian-Ukrainian war. The authors have reviewed and systematized studies on documentaries by foreign and domestic scholars. Ten documentaries and eight journalistic videos about the siege of Mariupol were analysed. The features of the films are identified, in particular, attention is paid to symbols, the image of the hero, and the image of the author. The features of documentaries and journalistic stories were compared by the following criteria: duration, method of collecting information, specific features of video materials, choice of characters, and journalistic techniques. The documentaries about the siege of Mariupol include footage of citizens from social media, journalists and photographers who took their archives out of the city, etc.
Medical press of the First World War period: Construction of social reality
Authors: Sadivnychyi Volodymyr
Published: September 2023

Introduction. The First World War is a forgotten and completely unhonored page in the history of Ukraine. Instead, events and facts related to it are actively investigated in many European countries. In journalism and journalism studies, the topic of activity of specialized newspaper and magazine editions of medical topics was not investigated in that period, therefore, a picture of the emergence, formation, and development of such a press was not created, and its systematization was not carried out.
Relevance and goal. The goal of the research is to analyze the problem-thematic components of specialized medical periodicals and continuing publications of the First World War period (1914–1918), to find out the peculiarities of their emergence and activity, and to introduce the specified press into scientific circulation. The relevance is formed by the lack of a comprehensive study of the activities of the specialized newspaper and magazine medical press of the specified period, its systematization, and problem-thematic priorities.
Methodology. Descriptive methods are used as a basis during the research, which allows us to penetrate the causes of this or that phenomenon, find out the main stages of its development, the influence of a specific situation on the nature of events and phenomena; and compare local phenomena with general historical processes. Based on the periodization of the history of the development of the Ukrainian press proposed by the Research Institute of Press Studies, the study focuses on the fifth period – Ukrainian periodicals of the First World War 1914–1917.
Results. The beginning of the First World War led to the closure of many publications. This was caused by increased censorship and financial problems of publishers. However, new periodicals also appeared during this period. In particular, 6 editions of military-medical topics were published: «Voenno-sanitarnii obzor» (1917), «Vrachebno-sanitarnie izvestiya Upravleniya Glavnoupolnomochennogo Krasnogo Kresta Yugo-Zapadnogo fronta» (1916–1918), «Izvestiya Kievskoi rentgenovskoi komissii» (1915–1917), «Nash zhurnal» (1917), «Nashe slovo» (1917), «Pomoshch ranenim» (1914). The thematically mentioned editions focused primarily on essential problems that arose in society with the development of military operations. The authors focused on the treatment of injuries from new ballistic weapons, rapid-fire machine guns, gas gangrene, damage by mustard gas and chlorine, the spread of epidemic diseases on the fronts, etc.
Conclusions. The research gives reasons to state that during this period, 6 editions were published, which, based on typological characteristics, we include in the military-medical press. Their pages were dominated by messages related to the struggle for the lives of the wounded and the organization of military medical aid. These publications played one of the leading roles in the representation of military reality.
Situational communication of food brands
Authors: Antonova Olha , Soloviova Yulia , Fiedotova Nataliia , Leleka Olha
Published: September 2023

Introduction. In the conditions of the full-scale invasion of the aggressor country on the territory of Ukraine, the advertising and PR communication of brands has undergone significant changes. One of the main adaptive changes in the communication discourse of brands has become situational communication – the ability to quickly react to events in the information environment and create relevant, viral content, in particular, through the product name and packaging design.
Relevance of research. In view of this, it is relevant to investigate the structure of the creation of situational pragmatonyms and point out the appropriateness of the created product name. The purpose of the article is to investigate the manifestations of the patriotic position of the brand through the situational change of pragmatonyms of food products, to single out the factors that encourage brands to rename products, and the feasibility of changing packaging for the complex impact of verbal and non-verbal components as elements of semiotic formation.
Research methods. During the research, general scientific methods and techniques of generalization, comparison, and systematization were involved, which were used to distinguish the changed pragmatonyms of food products during the period of the full-scale russian invasion.
The results. Changes in the pragmatonyms of food products as a reaction to the full-scale russian invasion were initiated by one brand within its products and supported by all manufacturers at the Ukrainian Research Institute of Standardization initiative. In view of the negative associations with the aggressor country, it was decided to abandon the name of standardized sausage products “Moscow sausage” and cheese “Russian cheese”, which have the recipe and appearance determined by DSTU. Brands independently chose the names for this type of sausage and cheese, mostly formed pragmatonyms fit into the lexical-semantic field of the concept “Ukraine”.
Conclusions. The situational change of the name of the product caused by the russian military aggression is one of the ways for the brand to demonstrate its patriotic position, support the Ukrainian military and distance itself from the symbols of the enemy country. However, we note that not all situational wartime pragmatonyms are appropriate, some brands speculate on the topic of war, which causes public outrage. Due to such trends, the product naming process should be regulated by law, which is now reflected in the draft law.
Media and psychoanalysis: methodological interaction
Authors: Chernysh Anna
Published: September 2023

Introduction. Various areas of media significantly effects on person in the 21st century, using numerous tools of communication and influence. There are quite a lot of media technologies that productively apply the theory and practice of psychoanalysis, its basic techniques, principles and tools, which proves the methodological interaction between media and psychoanalysis. The media sphere is an effective platform for successful discussion of many problems, which makes it closer to psychoanalysis as a theory of talk therapy, that is capable to free the human of unconscious, fears, anxieties, insecurities, and traumas.
Relevance of research. The relevance of the presented materials is determined by studying the possibilities of mass media to accumulate and transmit information, interpret it, create numerous focuses and visions of presenting events, influence the recipient of information by tools, methods, techniques and technologies productively used by psychoanalysis – discussion, transference, distancing, manipulation, trauma.
Results and discussion. A main condition that ensures the intraction between the socio-communication continuum and psychoanalysis is the presence of appropriate media material. The methods, techniques, and tools of psychoanalysis are quite appropriate to use in the process of analysis and interpretation of stereotypes, symbols, identification, categories of fear, anxiety, complex, death, justice, desire, destruction, deviation, pathology, addiction, trauma, which are widely expressed in various types of media – photography, cinema, audio, video and text messaging, radio, television, the Internet.
Conclusions and prospects. The media productively implement communication, various narratives, numerous forms of talking therapy (dialogue, polylogue, conversation, interview), discussion of socially significant problems, conflicts, individual, group, society, nation traumas, the interpretation of which is possible and expedient from the standpoint of the theory of psychoanalysis.
RESILIENSI KOLEKTIF LEMBAGA KEAGAMAAN KOMUNITAS DIFABEL
Authors: Ahmadi Rizqa , Nafis Muhammad Muntahibun , Restendy Mochammad Sinung
Published: September 2023

For some reason, the religious needs’ fulfillment of the diffable communities was not in line with the supply from both government and non-government institutions. This is inseparable from the impartiality of policies and low awareness, as well as a lack of public awareness of the rights of disabled communities. As a result, the negative stigma of being a non-productive community as well as ghair mukallaf (free of religious burdens) is still attached to them. The Taman Pendidikan al-Qur’an Spirit Da'wah Indonesia Foundation (TPQLB SPIDI) Tulungagung, which is the focus of this study, is one of the institutions that believe that their involvement is the answer to these needs, inequality, and slanted views. This institution survives and even continues to grow and steal the public's attention. This article is a record of community empowerment based on the Asset Based Community Development (ABCD) method with an emphasis on the analysis of organizational resilience in a sociological perspective. As a non-profit and non-governmental organization, TPQLB SPIDI can be resilient to several factors, such as mindful action, performance optimization, adaptive innovation, and paradoxical thinking. In addition, it is also supported by adequate social capital.
Komunikasi Spiritual Jurnalis: Alternative Activity Liputan Saat Pandemi
Authors: Moebin Amrullah Ali
Published: September 2023

Artikel ini bertujuan untuk mengungkap tentang perilaku jurnalis saat pandemi Covid-19 berlangsung di Indonesia. Perilaku yang lebih khusus dalam artikel ini yakni tentang komunikasi spiritual yang dilakukan oleh jurnalis tersebut. Alasannya, belum ada studi yang membahas secara khusus tentang komunikasi spiritual seorang jurnalis saat pandemi berlangsung. Komunikasi Spiritual adalah sisi lain atau bisa disebut sebagai aktivitas alternatif sebagai seorang jurnalis untuk menghadapi pandemi saat bekerja. Untuk mencari data-data peneliti lebih memilih studi etnografi dengan terlibat langsung di lapangan dan bertemu dengan para jurnalis saat melakukan liputan. Hasilnya menarik, para jurnalis ternyata memiliki entitas lain saat dirinya menghadapi pandemi. Mereka memiliki kegiatan komunikasi spiritual dengan data ke kuburan, datang ke pengajian, hingga mendengarkan pengajian. Begitu juga aktivitas komunikasi dengan Tuhan melalui doa juga dilakukan lebih intens dari pada kondisi sebelumnya.
RELASI AGAMA, MEDIA DAN NARASI MODERASI BERAGAMA PADA GENERASI Z DI TULUNGAGUNG
Authors: Wahyudin Didin
Published: September 2023

Artikel ini membahas bagaimana relasi agama, media dan moderasi beragama di kalangan generasi Z Indonesia. Banyak anak muda yang mendapatkan pengetahuan agamanya dengan mengakses media sosial. Sayangnya, tidak semua narasi kegamaan di media sosial menampilkan wajah yang toleran, justru banyak yang kontradiktif dengan nilai-ilai ajaran Islam yang ramah dan toleran. Oleh karena itu, penting bagi anak muda menguasia literasi digital dengan baik agar bisa memilah narasi keagamaan yang toleran. Pelatihan literasi digital pada generasi Z bisa menjadi salah satu sarana untuk membentengi mereka dari narasi-narasi agama yang inklusif dan ektrem di media sosial.
MASA ‘IDDAH PASCA PERCERAIAN DALAM KACAMATA TEORI MUBADALAH
Authors: Daud Muhsin Muhammad Najib , Azhari Hulaimi
Published: September 2023

'Iddah is a period determined by syara' for a woman after a divorce to refrain from marrying another man. This provision is always associated with reasons to know the possibility of getting pregnant or in other words, to know the cleanliness of the uterus. However, looking at today's increasingly modern world, it is possible to detect pregnancy in a short time. With this it is clear that the purpose of 'iddah is not only knowing the cleanliness of the uterus. Another problem is that this 'iddah provision only applies to women, because it is supported by texts found in the Qur'ān and the Prophet's Hadith which only mention women. Whereas in a text, if one gender is the cause for the goodness or badness of the other sex, then according to the rules of inclusion, both can be included in the same message in a reciprocal, reciprocal way, or what Faqihuddin calls mafhūm mubādalah. In this study, the authors tried to analyze Faqihuddin Abdul Kodir's mafhūm mubādalah method for the problem of 'iddah for husband and wife.
Nosotros amábamos tanto el Acceso Abierto
Authors: Packer Abel , Suber Peter , Kiley Robert , Terry Rob , Barbour Ginny , Paul Eve Martin , Hagemann Melissa , Arunachalam Subbiah , Rentier Bernard , Prosser David , Bosc Hélène , Veldsman Susan , Willinsky John , Babini Dominique , Velterop Jan
Published: September 2023

Nosotros amábamos tanto el Acceso Abierto
Aravani as Citizen: The Forging of a Sexual Identity
Authors: Choudhury Nina Roy , Harini C
Published: September 2023

Aravani is one of the transgender communities (male to female) in the state of Tamil Nadu who considers themselves as females trapped in male bodies. They are not mere cross dressers. Some of them undergo surgeries to realize their dream of becoming a complete female. They worship Aravana or Iravan, the son of Pandava prince Arjuna and Naga princess Ulupi. The Aravanis of Tamil Nadu identify themselves as the third gender like Eunuch, Hijra, Kinnar, Kothi, Shiv Shakthi and Jogappa communities in other parts of India. The Hijra population is the most visible transgender population in India. Much before the historic Supreme Court Verdict of 2014, Hijras were accepted as the third gender in India. While Hijras have mythological, religious, and cultural moorings, it is their search for social and political acceptance that this paper aims to study. Borrowing from mythology, the Tamil transgender community, Aravani, has attempted to carve out its own space within the LGBTQ spectrum. This paper examines the role of the Aravani movement in forging a sexual identity for transgender people and its impact and influence on promoting the rights of transgender people. Autobiographical records from the community and secondary sources with cultural, religious, and mythological references along with articles highlighting social and political developments were studied to map the journey towards a sexual identity. The primary texts used in this study are Our Lives Our Words and The Truth About Me.
Development of an empirical model for the prediction of the airflow resistivity of thin and low-density fibrous materials
Authors: Dunne Regan , Desai Dawood , Heyns Philippus
Published: September 2023

This study develops an empirical model to predict the airflow resistivity of thin and low-density sound-absorbing materials. Airflow resistivity is a key input parameter for Finite Element Method (FEM) simulations of sound pressure levels (SPLs) in vehicle cabins. However, existing models for determining the airflow resistivity of thin and low-density fibrous materials are inaccurate. Therefore, this study proposes a simple and reliable model based on multiple linear regression analysis of polypropylene fibrous nonwoven samples. The samples were tested using equipment designed according to ISO standards 9053-1. The model selection was performed using stepwise techniques to identify the most relevant predictors. The final model, along with its coefficients and goodness of fit statistics, is presented and discussed. The results of this study offer a practical tool for design engineers to estimate the airflow resistivity of thin and low-density materials, which can improve the accuracy of FEM simulations of SPLs in vehicle cabins.
A new design of seat suspension using different models of negative stiffness structure
Authors: Yuan Huan , Li Hongwei , Lu Wei
Published: September 2023

Three models of seat suspension using the negative stiffness structure including steel springs (SS), roller springs (RS), and tuned mass damper (TMD) are proposed and studied to improve the driver's seat ride comfort. Based on the dynamic models of the SS, RS, and TMD, their isolation efficiency and driver’s ride comfort are evaluated via two indexes of the root mean square displacement and acceleration of the seat (zws and aws) under two excitations of the random road surface and bumpy road surface. The results show that under the random road surface, the zws and aws with the seat's RS are reduced by 10.31 % and 20.32 % in comparison with the seat’s SS; whereas the zws and aws with the seat's TMD are smaller than that of the seat's RS by 19.15 % and 26.13 %; and the seat’s SS by 27.49 % and 41.15 %, respectively. Besides, the seat's displacement and acceleration responses with the seat’s TMD are also lower than that of both the SS and RS under the bumpy road surface. Therefore, the structure of the TMD should be designed and added to the seat suspension to enhance the driver’s seat ride comfort.
A multiresponsive flexible actuator based on BOPP/paper/RGO/PEDOT: PSS composites
Authors: Cheng Jiayi , Han Danye , Chen Fuzhi , Wang Yuting , Liu Run , Liu Yuqing
Published: September 2023

Graphene possesses not only excellent optical, electrical and thermal properties but also outstanding thermoelectric and photothermal conversion capabilities. The application of graphene with functional responses plays a vital role in the development of intelligent materials intended for flexible actuators and intelligent robots. Cellulose paper is foldable and is a hydrophilic network comprised of porous cellulose fibres. In this paper, graphene composites as well as cellulose paper were taken as basic materials, which were further combined with other polymer materials (biaxially oriented polypropylene film (BOPP) and poly (3, 4-ethylenedioxythiophene/polystyrene sulfonate) (PEDOT: PSS). PEDOT: PSS solution can penetrate into the porous network of the paper to form a high-strength nanocomposite structure. A flexible thin film driver capable of multiple stimuli under light, heat and humidity was produced. Through characterization, it was found that the bending ability of the composite film was significantly improved in response to stimulation.
Buckling of mono-axially compressed rectangular grids
Authors: Pancella Francesca , De Santis Yuri , Luongo Angelo
Published: September 2023

A theoretical analysis of the buckling of mono-axially compressed rectangular grid is carried out. The grid is composed of two orthogonal orders of continuous beams, simply supported at the ends. The critical load is determined by two different models: (i) the Kirchhoff’s homogeneous orthotropic plate, and (ii) a system of beams, solved by the Rayleigh-Ritz method. Parametric studies are carried out and numerical examples developed. The analytical solutions are validated by comparison with numerical Finite Element analyses.
The whirl direction and characteristics of rotor system under maneuvering flight
Authors: Chen Moli , Jiang Zhenhe , Luo Guihuo , Wang Weiying
Published: September 2023

Maneuvering flight can generate the asymmetry of the stiffness or damping to an engine rotor system, as so to influent the whirl direction and characteristics of rotor system. In this article, the identification method for orbit direction is provided for a rotor system under maneuvering flight condition. By a simulation example, the variable movement shapes about rotor under maneuvering flight are illustrated through cases as the mixed and the pending whirls. The results show that the original low-order critical speed in the backward or forward whirl mode changes to the mixed whirl while considering the impact of maneuvering flight, where some backward and forward critical speeds in the same order are almost overlapped as one critical speed which in the mixed whirl mode. Maneuvering flight results in dynamic eccentricity of the rotor shaft, and the orbits of nodes in the mixed whirl are a series of ellipses with variable inclination angles. The case with pending whirl direction is finally determined as a mixed whirl by the orbit direction graph. The whirl directions of orbits on bearings or the contact angle of bearings maybe different under maneuvering flight can be explained from the rotor dynamical view.
Oil-separation properties of aviation grease under thermal aging
Authors: Wang Chaoyi , Chen Chuanhai , Liu Zhifeng , Liu Changxin , Guo Jinyan , Cui Peijuan
Published: September 2023

During work or long-term storage, grease is susceptible to thermal oxygen or mechanical aging, which affects the performance of grease or even leads to the destruction of the structural surface of grease lubricated products. As the main mechanism of grease lubrication, grease partitioning can explore the aging law of grease and effectively identify whether the grease fails. In this paper, 7014 aerospace grease was selected as the research object and accelerated test was conducted by high temperature thermal oxygen. The combination of grease separation degree and mass change rate was selected for comprehensive characterization of grease separation performance. The results show that the grease partitioning degree has a significant decreasing trend; the quality change has also decreased and the degradation trajectory is similar to the partitioning degree; it is inferred that the main reason for the decrease of grease partitioning performance may be the loss of base oil and the change of thickener fiber structure.
Penerapan PSAK 73 atas Profitabilitas, Struktur Modal dan Tangibility pada Perusahaan
Authors: Ginting Andreas Paskalis , Permana Made Dwi Cahaya , Firmansyah Amrie
Published: September 2023

This study examines the impact of applying lease accounting before and after implementing PSAK 73 in Indonesia. PSAK 73 is the adoption of IFRS 16, which took effect on January 1, 2020. This study uses a quantitative method approach using secondary data in the form of data and information sourced from the annual financial reports of 52 companies in the infrastructure sector listed on the Indonesia Stock Exchange in 2019 and 2020. Data research was obtained from Indonesia Stock Exchange (IDX). The comparison focus before and after the implementation of PSAK 73 is profitability, capital structure, and tangibility. Testing the hypothesis in this study used a paired sample t-test for paired data. This study concludes that applying PSAK 73 does not result in differences in the profitability, capital structure, and tangibility of infrastructure companies in Indonesia.
Determinan Minat Investasi Saham Pada Mahasiswa
Authors: Rona I Wayan , Sinarwati Ni Kadek , Suci Ni Made
Published: September 2023

This study aims to analyze the effect of overconfidence, herding, cognitive dissonance, and the illusion of control bias on the intention to invest in stocks. The subjects of this study are students who are members of an established investment gallery membership in some Universities located in Bali with an age range of 18-26 years. The objects of this research consist of overconfidence, herding, cognitive dissonance, and the illusion of control as the independent variables, and intention to invest in stock as the dependent variable. The numberof samples in this study was 118 people. The data collection technique uses the questionnaire filled out through Google Forms media. The data analysis technique uses inferential statistical analysis techniques using a multiple linear regression model and the SPSS application (statistical product and service solution) as a data processing media. The results showed: (1) Overconfidence significantly positively affects the intention to invest in stock. (2) Herding, Cognitive dissonance, and Illusion of control have no significant effect on the intention to invest in stock.
Expected effects of projected institutional changes in digital out-of-home advertising
Authors:   Lomonosov Moscow State University, Shastitko Andrey ,   RANEPA Center for Competition and Economic Regulation Researc, Morozov Anton ,   Lomonosov Moscow State University,   RANEPA Center for Competition and Economic Regulation Researc, Morosanova Anastasia ,   Lomonosov Moscow State University,   RANEPA Center for Competition and Economic Regulation Researc
Published: September 2023

During the political, economic instability and uncertainty, both the goals of economic regulation and the methods of decision-making are changing. Against the backdrop of changes in state policy, the need to ensure national security is becoming more acute, while there are still decision-making risks associated with the rent-seeking behavior of the regulatory authority or some market players. This article considers Draft law no. 160605–8 “On Amendments to the Federal Law “On Advertising” in context of regulating relations in the outdoor advertising, both in terms of the legislative innovation effectsand the compliance of these norms with the criteria for “promising trajectories” of institutional changes. After a resonant discussion in the media, the Draft law was rejected by the State Duma in its second reading, which confirms the importance of public discussions on lawmaking and economic analysis of the proposed measures. With the regulatory impact assessment methodology, we get a qualitative and quantitative estimation of organizational and technical measures of the proposed regulation (namely, the emergence of a private single operator of digital advertising structures). We also offer alternative institutional solutions that allow achieving the proclaimed goal of the draft law with greater efficiency: the introduction of business requirements (licensing, accreditation, maintaining a registry) or implementation of market self-organization. We conclude that granting control functions to one of the market players creates risks associated with an unresolved conflict of interest, which can lead to monopolization of digital out-of-home services and budget losses.
Obverse and Reverse of the Imagology: A New Monograph by St. Petersburg Orientalists on Peter the Great’s Image in East Asia, and Vice Versa
Authors:   Institute of Oriental Studies of the Russian Academy of Sciences, Golovachev Valentin Ts.
Published: September 2023

This publication aims to review and conceptually evaluate the collective monograph “The Image of Peter the Great in East Asia countries”, published in the year of the 350th anniversary of the first Russian Emperor and representing a new milestone in Russian science. The monograph prepared by a group of well-known St. Petersburg orientalists testifies to the significant development of comparative Imagology in Russian Oriental studies, caused by the rapid rapprochement of Russians and Asian peoples, the growing number of scholars, as well as the relevance, quantity and quality of their research in this field. The new book can be put on a par with the “Leo Tolstoy and the Orient” (1971) — a landmark book for Russian historiography, while the topic “Peter the Great and the Orient” is comparable in scale to the Oriental Space of the great Russian writer and serves as a unique refraction of Tolstoy’s “War and Peace” paradigm, which is extremely complicated, meaningful and interesting for academic study. As the review of the monograph reveals, during the study of Peter the Great’s image in the East Asia countries, the authors surpassed the title theme in quite a positive and creative way. But, considering the fundamental immensity of such theme as “Peter the Great’s Image in the Oriental countries”, it seems necessary to issue the second more expanded edition, enriched by the new countries and peoples of Asia and Africa, just like the “Leo Tolstoy and the Orient” monograph. The imagological research work could be also continued in the foreseeable future (before 2037) by the new fundamental international study, such as “Pushkin and the Orient: A. S. Pushkin’s Image in the Oriental countries and the Orient in the masterpieces of the great Russian poet”. The groundwork for such an academic project already exists in Russian Orientology for a very long time.
The Image of Chichikov in the Works of Raphael Patkanyan
Authors:   Yerevan State University, Makaryan Albert A. , Soghoyan Astghik V. ,   Institute of Literature after Manuk Abeghyan of National Academy of Sciences of the Republic of Armenia
Published: September 2023

The article examines the influence of the famous Russian writer N. V. Gogol on the prose of the Armenian writer R. G. Patkanyan. The subject of the research are Gogol’s poem “Dead Souls”, Patkanian’s novel “Ambitious”, the play “Pampulius” and the story “Armenian Chichikov”. One of the key issues is the study of Armenian transformations of the Chichikov type, its similarities and differences in comparison with the Russian prototype. Historical-comparative, comparative, structural-morphological methods are used as the methodological basis of the study: the works were considered according to their content and structure. The article examines the connections and relationships between Russian and Armenian literature at a new level, as well as the influence of Russian literature in general: it studies Gogol’s literary school outside Russia, which had various ideological, philosophical and artistic influence on the works of Armenian writers and on Patkanyan in particular. One of the main problems of the article is the question of choosing and characterizing a scoundrel hero, since Patkanyan, under the influence of Gogol, also puts a person striving for wealth at the center of his works and builds his plot around him. The morphological commonalities of the works are also considered: entry into the city, establishing connections with influential people, successes, disclosure of negative plans, escape. As a separate issue, the problem of marriage for money is also investigated: the characters guided by a simple thirst for power are looking for a bride with a rich dowry. By following Gogol’ example, Patkanian also portrays the negative aspects of Armenia and Armenian reality and criticizes them trying to offer possible solutions to these problems. Being a student of the Gogol school, Patkanyan follows the example of the latter and in various issues and techniques of artistic generalization follows the same literary path, but he is not copying it: in his works, Patkanyan offers independent and unique solutions.
The Images of the Nation in Migrant Social Media: А Comparative Analysis of VKontakte Groups from Azerbaijan, Kazakhstan, Kyrgyzstan, Tajikistan, and Uzbekistan
Authors:   St. Petersburg State University, Tregubova Natalia D. , Stepanov Alexander M. ,   St. Petersburg State University, Lisitsyn Pavel P. ,   St. Petersburg State University
Published: September 2023

The paper presents the results of a study that is part of a broader project aimed at analyzing online activities of migrants to Russia from Azerbaijan, Kazakhstan, Kyrgyzstan, Tajikistan, and Uzbekistan. This research lies at the intersection of migration studies and nationalism studies. The authors seek to characterize the images of the nation and related discussions in online communities on migration topics. The focus of empirical analysis is five VKontakte groups discussing various news and stories about the country of origin, including news on migration to Russia. The methods are online observation supplemented by discourse analysis of posts and comments. The authors aim to answer the following questions: How do the participants construct the images of the nation? What is debatable and what is in consensus? How are the images of the nation and Islam related? How is migration to Russia characterized? Basing on empirical analysis, the authors characterize three images of the nation: “modernizing state” (Kazakhstan and Kyrgyzstan), “Muslim nation, but not Islamic state” (Tajikistan and Uzbekistan), “nation united by common enemies” (Azerbaijan). For the first one, the main sources of tension are class divisions and vectors of nation’s development. For the second one, Islam is considered as an important part of the national culture, and there are discussions, which type of identity, national or religious, is more significant. The third image is characterized by internal divisions which lose their importance in the face of the external enemy. In conclusion the authors discuss implications of research results for understanding migration processes in the post-Soviet space, including radicalization of migrants.
Psychological stability of the personality in the light of the psychology of values: The dialectic of constancy and variability
Authors:   Federal Scientific Center for Psychological and Interdisciplinary Research, Guseltseva Marina ,   Russian State University for the Humanities
Published: September 2023

THe issues of value transformations today come to the fore in educational practices and psychological research, includes different levels of cognition, forms a common problem field in the social sciences and the humanities, where a person’s value priorities are considered as prerequisites for his behavioral strategies, subjective preferences and political choices. However, the problem of relationship between values and psychological stability of a person in a transitive society remains insufficiently studied. THe purpose of the article is to discuss the psychological stability of a person in the context of the psychology of values. It has been established that reliance on values in a situation of sociocultural changes, awareness and self-reflexivity are prerequisites for the psychological stability of a person, which, depending on different research angles, can be interpreted in two ways: on the one hand, as self-determination, an internal locus of control, adherence to independently chosen life guidelines, on the other hand, adaptability, flexibility, readiness to situationally respond to changes and rebuild behavioral strategies. In this regard, the dialectic of constancy and variability becomes a methodological basis for interpreting the psychological stability of a person as a complex and antinomic process. Values connect subjective and objective, emotional and conceptual, existential and cognitive content, acting as a kind of bridge between the studies of personality and society, the methodology of psychology and social sciences. THe transdisciplinary approach is consistently used as a methodological strategy aimed at generalizing in a single conceptual framework the relationship between personality development, the evolution of society and culture, the dynamics of values changing in the course of sociocultural transformations. In this context of transdisciplinary discourse, a construct is introduced and substantiated — the axiological space of socialization. THe construct makes it possible to combine both directed influences on a person from the side of his social environment and educational institutions, as well as dispersed, diffuse, latent influences due to current changes in everyday life and the peculiarities of the modern way of life. It is assumed that in methodological terms, the axiological space of socialization contributes to the integration of research into the psychology of personality, the psychology of subject, the psychology of everyday life in the field of social sciences.