bluuebunny/crossref_metadata_2025 huggingface dataset:
ЗНАЧЕННЯ КЛАСИЧНОЇ ДІАЛЕКТИКИ ДЛЯ ПЕДАГОГІКИ
Authors: ВОЗНЯК Володимир
Published: June 2021

Метою роботи – розкрити методологічну роль класичної діалектики для сучасної педагогічної теорії та практики. При цьому класична діалектика принципо- во відрізняється від ідеологізованої позитивістської версії «діамату». Методологія. Засобами досягнення поставленої мети є сама діалектика в її класичному варіанті, вираже- на через необхідні категоріальні зв’язки. Тим самим вона розуміється як логіка й теорія пізнання, доведені до ети- ки, естетики й тим самим до мислячої педагогіки. Наукова новизна. У статті обґрунтовується думка, що саме класична діалектика є необхідною та достатньою методологією дійсної педагогічної теорії та практики. Значимість діалектики для педагогіки не можна інтерпретувати як певне «застосуван- ня» в педагогіці й до педагогіки деяких принципів діалектичної філософії, виражених у формі «готового знання». Діалектика має стати діяльною здатністю педагога. Педагогічна нау- ка, щоб стати дійсно рефлексивної теорією, повинна вийти на власне категоріальний рівень осмислення свого предмета, навчитися адекватно працювати з категоріями. Тільки за таких умов педагогіка набуде реальної, сутнісної адекватності своєму специфічному предмету – становленню людської суб’єктивності, і стане здатною забезпечувати гармонійний розвиток особистості. Висновки. Якщо педагогіка насправді стурбована процесами побудови власне людського в людсь- кому індивідові, вона жодним чином не омине діалектичної методології, вироблення діалектичної здатністю вчителів. При цьому останні в підготовці повинні здобувати базову філософську освіту. Якщо ж педагогіка обмежується вико- нанням «соціального замовлення», «соціалізацією», процеса- ми адаптації індивідів до структур наявного соціуму, то вона може продовжувати «гратися» в новомодні загальнонаукові методології (системно-структурний підхід, синергетика тощо).
ОБҐРУНТУВАННЯ АНТРОПОДИЦЕЇ У ХРИСТОЛОГІЇ П.О. ФЛОРЕНСЬКОГО
Authors: КАРПЕНКО Мирослава
Published: June 2021

Розглядається христологія П.О. Флоренського – один з основних розділів його релігійно-філософської спадщини. Викладаються різні позиції сучасних дослідників щодо хрис- тології П.О. Флоренського. Мета статті – розкрити умови виправдання людини, концептуально викладені у христології П.О. Флоренського. Христологія П.О. Флоренського аналізу- ється в контексті Євангелії від Іоанна. Цей контекст дозволяє розглядати Христа не тільки в духовно-онтологічному аспек- ті, у Його єдності з Богом-Отцем, але також і в історично- му аспекті, а саме як Богоявлене людям Лице, яке наділяє їх духовною силою, що походить від Бога-Отця. Розглядаються основні проблеми, пов’язані із христологією П.О. Флоренського, як-от релігійний культ, антроподицея, релігійно-антропологіч- ний аспект антроподицеї. Методологія. Дослідження прове- дено на основі аналізу «конкретної метафізики» і «Філософії культу» П.О. Флоренського, які належать до пізнього періоду його творчості. В основі дослідження – історико-порівняльний метод. Наукова новизна. Показано, що в П.О. Флоренського христологія є ключем до його розуміння людини як ноуменаль- но-феноменальної двоєдності й обґрунтуванням його антро- подицеї – філософського за формою та релігійного за змістом учення про виправдання людини. Відзначається, що в П.О. Фло- ренського христологія експлікована у двох напрямах: від Бога до людини (релігійний культ) і від людини до Бога (антропо- логічний аспект антроподицеї). У релігійному культі Христос постає у двоєдності своєї Божественної і Людської природи як Боголюдина. Висновки. У висновках формулюється положення про те, що для П.О. Флоренського духовний шлях являє собою двоєдність теодицеї й антроподицеї, які ведуть людину до однієї мети – Богоспілкуванню через Богослужіння.
Tuberculous Meningitis - An Entity Not to Forget
Authors:   Hospital De Braga, Leite Lídia
Published: June 2021

A 27-month-old child was admitted with fever, anorexia, convergent strabismus and irritability. Cerebrospinal fluid was suggestive of tuberculous meningitis.
Benefit of Including Food-Derived Ingredients in Enteral Nutrition Formulas: Practical Experience from Clinical Cases
Authors:   Birmingham Women’s And Children’s NHS Foundation Trust, Siddiqui Aneeqa
Published: June 2021

Recent studies would indicate that there has been an increase in the use of Blended Diet (BD) with enterally fed children. Parents report that BD has led to significant positive changes for children’s physical health and wellbeing.
Algorithm for the Therapeutic Approach to Apnea of Prematurity
Authors:   Hospital De Pediatría UMAE, Lemus-Varela Lourdes
Published: June 2021

Apnea of prematurity is one of the most common and recurrent clinical problems observed in the neonatal intensive care unit; with a higher incidence at a lower gestational age.
Staphylococcal Scarlet Fever in a Child
Authors:   Hospital De Braga, Rodrigues Cristina F
Published: June 2021

Staphylococcal scarlet fever is a rare infectious skin disease, with few cases reported in literature. The etiology is related to the staphylococcal epidermolytic toxin.
Illicit Trafficking in Narcotic Drugs and Their Analogues Using Computer Technology: a Criminal Law Study
Authors: Omelchuk Oleh , Kopanchuk Volodymyr , Orlovskyi Bohdan , Shekhovtsova Liliia , Yanishevska Kateryna , Kopanchuk Olena
Published: June 2021

Modern negative trends in drug-related crime on the Internet, the peculiarities of its existence and reproduction in the global network dictate the need for a further deeper research of the criminological and legal characteristics of the crimes under consideration and the grounds for criminalizing the drug distribution method. The public danger of drug-related crime on the Internet is expressed in the fact that at present the computerization of the population is gaining momentum, computer technology has become a necessity, and the Internet has become public, where a large amount of information about narcotic drugs, the possibilities of their manufacture, acquisition, the sale is concentrated; their unusual properties are described, etc. The authors studied in detail the level, structure and dynamics of drug trafficking, as well as its criminal law regulation and proposed a mechanism for preventive measures. The authors also conducted a study and, based on the responses of 108 respondents, identified the most effective preventive measures.
Innovations in the educational process and pedagogical technologies under the influence of crisis phenomena and global digitalization
Authors: Makhynia Nataliia , Kichuk Yaroslav , Ptashchеnko Olеna , Kyrylenko Kateryna , Horchynska Kateryna , Riznyk Viacheslav
Published: June 2021

Innovations in the educational process are necessary because the entire country's future well-being depends on the level of education of young people. Pedagogical technologies are being improved to provide high-quality modern education. In their study, the authors studied the features of innovations in the educational process and pedagogical technologies, the impact of the crisis and global digitalization on it, as well as global trends. The authors determined that the dominant processes and functions for acquiring new knowledge and transferring it to the economy's production sectors are increasingly organized according to the principle of networks and proposed the features and algorithm for the formation of a pedagogical (educational) cluster. To calculate the effectiveness of such a cluster, the authors have developed a complex system of indicators. The recommendations proposed in the study will help universities understand the clustering process, realize its importance, outline development paths and their place in the clustering of the educational process.
Strategic Brand Management in the Market
Authors: Mazaraki Anatolii , Tarasiuk Mykhailo , Solonenko Yuliia , Galenko Oksana , Lysyniuk Maryna , Fayvishenko Diana
Published: June 2021

The modern market is characterized by ups and downs associated with both external negative influences and expectations, and with the structural restructuring of the market. The result of these transformations was the transformation of the methodological and practical foundations of the formation, functioning and development of marketing and advertising activities, the leading role among which is the development and management of the company's brand.The development and management of a brand, or the branding process in an enterprise should be strategic and holistic. The authors studied the theoretical basis for the development and promotion of a brand to the market and proposed directions for its improvement: an algorithm for creating a brand strategy and a comprehensive scheme for forming a strategy for the development and management of an enterprise brand. To assess the effectiveness of the brand management strategy, the authors proposed a system of indicators characterizing the process of brand development and management based on the BEES model, as well as a brand health diagram. The adequacy of the implementation of the proposed scheme for the formation of a strategy for the development and management of a brand of an enterprise is based on the fulfilment of specific requirements for an enterprise developing a brand, in particular, for the efficiency of the branding unit in its structure, forms and methods for assessing the rationality of management decisions, as well as for organizational and economic model of the enterprise in the market.
Legal Aspects of Identity Transactions Involving Entities with Foreign Elements: ICT Technologies and Issues of the Tax Burden
Authors: Samsin Igor , Kovalko Nataliia , Kovalenko Anatoliy , Zabzaliuk Dmytro , Kurando Kateryna
Published: June 2021

Legal analysis of transaction authentication with the participation of legal entities with a foreign element (LEFE) is interesting not only in disclosing theoretical and practical issues but also with difficulties and several features regarding foreign law application. The purpose of the article is to find the correct procedure for notarization of transactions on the territory of Ukraine with the participation of LEFE. In the research process, the authors combine theoretical developments and legislative instructions with practical experience of notarization. The research is based on four statements, which are confirmed during the study, contain a detailed description of the nuances to avoid possible errors and also offer to use a list of documents required to certification an undisputed transaction in Ukraine. The result of the article and its novelty is a detailed study of the actions of a notary in the certification of transactions involving LEFE, the presentation of a visual algorithm based on the above statements, namely: before the notary certificate it is necessary to determine whether the subjects of the transaction are LEFE; if a legal entity is established under the legislation of another state, then its civil and legal capacity is determined by the personal law of the state of such legal entity; there are certain restrictions on the activities of LEFE in Ukraine. The authors reviewed the recent changes in the taxation in Ukraine of LEFE, which must be taken into account; proposed the use of ICT technologies in notaries, what can not only simplify the process, help avoid subjective mistakes, but also open up new opportunities to streamline transactions involving entities with foreign elements.
Organizational and Economic Support of Educational Services Management in Ukraine
Authors: Kondratenko Natalia O. , Nepomnyashchyy Oleksandr M. , Marusheva Oleksandra A. , Medvedchuk Oksana V. , Lahunova Iryna A.
Published: June 2021

The article is focused on the development of the education system in the face of global challenges. Today, the education system is in the process of transformation, therefore, the question of finding ways to improve it is of real practical importance. The accessibility and quality of education is a global goal of sustainable development, identified as a priority for global human development by the United Nations. The latest trends in the development of the education system are defined in the article. Quarantine activities have identified problems of access to education for more than 7 million people in 190 countries. The absence of rational actions to increase the effectiveness of the educational process in the context of quarantine measures can lead to catastrophic consequences. The relevance and problems of the development of the education system in the context of social challenges are identified in the article. Education development issues are of important socio-economic importance, without the provision of effective institutional and economic mechanisms for the management of the educational process, it is impossible to ensure the sustainable development of mankind. There are considered certain aspects of the development of free and private education as forms of economic support in the article. Also, aspects of rationalization and increasing transparency of the financing of the education system are considered in the article. As a result of the analysis of the organizational and economic problems of increasing the efficiency of the educational process in the face of global challenges, the introduction of the concept of “technological educational process” is proposed, which will include processes of automation, digitalization and rationalization of the education system.
The Ecosystem of VAT Administration in E-Commerce: Case of the Eastern Europe Countries
Authors: Abramova Alla , Shaposhnykov Kostiantyn , Zhavoronok Artur , Liutikov Pavlo , Skvirskyi Illia , Lukashev Oleksandr
Published: June 2021

Quarantine economic conditions put forward new demands to tax administration’s efficiency as a priority source of the EU financial resources. The relationship between fair, efficient, sustainable taxation and budget revenues’ adequacy to finance social and economic investment, innovation, and development needs is evident. Therefore, ensuring tax administration’s efficiency and effectiveness in any EU country is of theoretical and practical importance.The study aims to deepen the VAT administration’s theoretical and applied provisions in e-commerce operations in a global convergence of the national economic systems. The analysis of the state and forecast of the VAT mobilization in the EU countries’ e-commerce operations are presented. The research’s specific is to assess the VAT tax base’s future size in the context of changes in the EU tax legislation. According to the scientific literature analysis, in forecasting the studied tax, it is advisable to use econometric forecasting methods based on time series models.As the result of the study, the forecast volumes of the VAT base of Eastern Europe and the amount of approximate future tax revenues are presented. The obtained results confirm the relationship between the growth of e-commerce and VAT tax revenues under such transactions. It led to the presentation of the author’s vision of the VAT administration ecosystem for e-commerce transactions and the allocation of its functional entities.The directions on achieving the VAT mobilization’s maximum volumes following the EU tax legislation requirements in European integration and globalization were substantiated. The submitted conclusions are entitled to be used in tax administration processes to forecast other tax payments.
Managing the Intellectual Potential in the Business-Network of Innovative Digital Technologies
Authors: Trusova Natalia V. , Oleksenko Roman I. , Kalchenko Sergey V. , Yeremenko Denys V. , Pasieka Stanislava R. , Moroz Svitlana A.
Published: June 2021

The article considers the synergy of managing the intellectual potential of the enterprise in the business-network of innovative digital technologies. The paradigm of development of intellectual potential of enterprises in the network system of innovative digital technologies is presented, which determines the spatial-technological, information-virtual, intellectual security of economic entities, taking into account tools and components of inclusive growth in their transformation of business models and new markets. A methodological approach to the management of effective interaction of enterprises which determines the shift of entropy of their magnitude of intellectual potential, and affects the business system with a limited duration of the network of innovative digital technologies is developed. The main value of integration processes in the business-network of innovative digital technologies of enterprises, which is formed due to their internal incentives, as innovators have market value and significant intellectual assets, they are always at the center of the economic environment. Mathematical tools for describing the functionality of an integrated network are systematized. Innovative digital technologies of enterprises with a significant amount of intellectual assets are based on differential equations. It is proved that the synergetic proximity and ability to asymptotic development, i.e., the increase of intellectual assets in a complex business system, causes the participating company to change the network of innovative digital technologies and reorient to the terms of compensation for invested resources. Inconsistency and non-acceptance of the rules of cooperation, weak influence of the network on the participant will lead to its inefficiency and withdrawal from the network, the choice of “off-network” vector of development. The analysis of the index of intellectual development and volumes of intellectual capital in Ukraine and in the world is carried out. The volumes and structure of attracted investments in intellectual assets by the sizes of the enterprises of Ukraine are determined. The rating position of Ukraine on the world level of development of innovative digital technologies is investigated. The factors of effective cooperation of enterprises according to the criteria of intellectual potential management in innovative digital technologies are substantiated and the areas of interaction of the participants of the innovation process are determined.
Improving Investment Management in Agribusiness
Authors: Finagina Olesya , Prodanova Larysa , Zinchenko Olha , Buriak Ievgen , Gavrylovskyi Oleksandr , Khoroshun Yuliia
Published: June 2021

The financial condition of many agricultural organizations does not allow financing investments at the expense of funds; therefore, there is a need for investments, borrowed sources of investment financing are too expensive. Therefore, the issue of improving investment management in agribusiness is incredibly urgent. To develop proposals, the authors analyzed theoretical studies in this area, as well as the state of agribusiness in Ukraine and investment trends. Based on the study, the authors proposed a mechanism for improving investment management in agribusiness, the distinctive features of which are the cooperation of internal and external sources, as well as risk management due to the specifics of the industry. Using a practical example, the authors showed an example of risk management in agriculture, which confirmed that taking risks into account leads to the more correct and effective planning of investment activities.
Evaluation and Analysis of Socio-Economic Development Level and Management in Guangxi province of China
Authors: Zongkeng Li , Zhuoran Li , Mykhailov Andrii , Shi Wei , Zhuquan Yang , Surong Xia
Published: June 2021

This article takes 14 regions in Guangxi as the research object, selects ten indicators that can measure the level of socio-economic development, establishes an index system for evaluating the regional socio-economic development level of Guangxi regions, and uses principal component analysis method and cluster analysis method carry out comprehensive evaluation and difference analysis among the economic development level of Guangxi regions. First, the primary component analysis method uses to comprehensively evaluate the economic development level of 14 regions in Guangxi. The results show that there are vast differences in the economic development levels of regions in Guangxi. Secondly, a systematic cluster analysis method uses to classify and analyze the differences between regions according to the similarity of economic development status. Finally, combined with the results of principal component analysis and cluster analysis, comprehensive evaluation analysis and discussion on the economic development status of various regions in Guangxi, and based on the evaluation results, proposed countermeasures for the socio-economic development and management in Guangxi province of China.
Ensuring the Sustainable Development of an Industrial Enterprise on the Principle of Compliance-Safety
Authors: Pererva Petro , Kobielieva Tetiana , Kuchinskyi Volodymyr , Garmash Sergii , Danko Taras
Published: June 2021

This article examines and explains the necessity and importance of studying the conceptual provisions of sustainable development of enterprises and organizations in the real sector of the economy, taking into account the current environmental, economic, social situation. Also, the work is developing scientific and theoretical provisions on increasing the level of safety of industrial enterprises. Special attention is paid to studying the theoretical and methodological foundations of the concept of “compliance-safety” and the development of methodological foundations of its potential use in the current conditions of the Ukrainian economy to increase the level of sustainable development of enterprises in the real sector of the economy.After analyzing the current state, methodological and practical recommendations, which are associated with potential changes in the number of compliance-safety violations in the domestic economy, were formed. In this regard, the scientific community was invited to expand the terminology base by introducing the terms “compliance safety”, which should be formulated based on the current understanding of the term “compliance”, as well as close to the concept of “economic security” and “sustainable development”. This approach makes it possible to significantly impact the sustainability of the development of industrial enterprises and the economy of the state as a whole. Thanks to this definition, it is possible to consider the dynamics of the compliance safety indicator in determining the sustainable development of an enterprise and determine the size and importance of the impact of micro and macro factors on safety. In this work, special theoretical and methodological provisions and methodological recommendations were developed for assessing the value of a comprehensive compliance safety indicator. The authors’ proposals were tested at many machine-building enterprises of the North-Eastern industrial region of Ukraine.
Exploring Sustainable Urban Transformation Concepts for Economic Development
Authors: Mikelsone Elina , Atstaja Dzintra , Koval Viktor , Uvarova Inga , Mavlutova Inese , Kuzmina Jekaterina
Published: June 2021

Nowadays cities face numerous challenges amplified to build necessary urban municipal and community capacity to ensure sustainability transformation to respond to the local and global challenges of climate change, inequality, and access to resources. This research combines the study fields of sustainability, economic development, governance of sustainability transformation, providing the multidisciplinary approach as a systemic-oriented view encompassing the social, technological and ecological aspects of urban transformation. The purpose of the paper is to explore how the concept of urban transformation could be operationalized for research of economic development under the economic strain assuming the emergency of Covid-19 grand challenge. The research methods used are a systematic literature review and the content analysis. The paper provides a detailed characterization of the urban transformation exploring this concept from the structure and system perspectives for the economic exit from the crisis.
Adenocarcinoma mucinoso de vesícula biliar originado en neoplasia papilar intracolecística
Authors:   División de Cirugía General del Hospital Dr. Cosme Argerich. Buenos Aires. Argentina, Petracchi Enrique J. , Merchán del Hierro Pablo , Chaktoura Diego C. , Muthular Magalí , Canullán Carlos M.
Published: June 2021

Intracholecystic papillary neoplasm with invasive mucinous adenocarcinoma and signet ring cells is a rare, aggressive variety of gallbladder cancer, with symptoms mimicking cholecystitis. Survival and prognosis are worse that other types of gallbladder cancer despite surgery and chemotherapy. The aim of this article is to describe a case of a rare gallbladder cancer with specific histology and the treatment performed
Resección laparoendoscópica de tumor de la unión gastroesofágica
Authors:   Unidad de Esófago, Hospital Universitario Fundación Favaloro. Buenos Aires. Argentina, Turchi Matías J. , Lovera Romina M. , Ramírez Mauricio G. , Badaloni Adolfo E. , Nachman Fabio , Nieponice Alejandro
Published: June 2021

Atypical gastric resection has proved to be beneficial to treat submucosal tumors. The technique is more difficult when these tumors develop next to the gastroesophageal junction (GEJ). Intragastric resection combining endoscopic and laparoscopic approach was proposed to solve this limitation. There are no publications about this technique in our environment. A 42-year-old female patients with a 2-mm subepithelial tumor below the cardia evaluated by upper gastrointestinal (UGI) videoendoscopy and endoscopic ultrasound suggestive of a gastrointestinal stroma tumor (GIST) underwent resection using the combined laparo-endoscopic approach. Under laparoscopic guidance, balloon-tipped trocars were introduced in the abdominal cavity and then into the stomach using endoscopic view. The balloons were inflated to fix the gastirc wall to the abdominal wall. The lesion was resected using mechanical stapler. The combined approach is safe and efficient, and simple to perform for trained professionals, constituting a reproducible option in selected cases
Abordaje laparoscópico sistemático de la coledocolitiasis
Authors:   Servicio de Cirugía General del Hospital Dr. Cosme Argerich. Buenos Aires. Argentina., Canullán Carlos M. , Petracchi Enrique J. , Baglietto Nicolás , Zandalazini Hugo I. , Quesada Bernabé M. , Merchán del Hierro Pablo , Ocampo Carlos
Published: June 2021

Background: The prevalence of common bile duct stones associated with cholelithiasis increases with age and is about 15 % in the 8th decade of life but its management is still controversial. Some surgeons prefer the single-stage approach with laparoscopy while others suggest the two-stage management with preoperative endoscopic retrograde cholangiopancreatography (ERCP) followed by laparoscopic cholecystectomy. Objective: The aim of the present study was to evaluate the efficacy of feasibility of single-stage laparoscopic surgery in patients with cholelithiasis and choledocholithiasis. Material and methods: We conducted a retrospective study with prospectively collected data between July 2008 and July 2018. Results: Of 2447 laparoscopic cholecystectomies performed during the study period, 416 presented common bile duct stones. The global success of the transcystic approach to clear common bile duct stones was 81.2%, 70.4% in the cases with preoperative diagnosis of choledocholithiasis and 92.9% for other diagnoses. The rate of complications was 4% without deaths or bile duct injuries. Conclusion: Single-stage laparoscopic surgery is an efficient and safe approach based on the high global success of transcystic exploration. The preoperative diagnosis of choledocholithiasis reduces the efficacy of the procedure due to greater indication of choledocotomy, with complications and longer length of hospital stay.
Inserción laboral del cirujano joven en la Ciudad de Buenos Aires. Necesidad de reestructuración del sistema de formación del cirujano general
Authors:   Sanatorio Municipal Dr. Julio Méndez . Buenos Aires, Argentina., Sarsur Fernández Humberto F. , Buchanan Lucía M. , Cassani Federico , López María A. , La Torre Ayelén
Published: June 2021

Background: Training in surgery has remained relatively uniform since the residency programs were introduced. The continuous advances in science have led to the progressive super-specialization of surgeons; 70% of them continue their training with a subspecialty. Objectives: The aim of this study was to identify the proportion of surgeons who dedicate hours of their practice in another activity and to analyze how surgeons enter the workforce. Material and methods: We conducted a prospective and descriptive cross-sectional study with data from a survey, records of the General Directorate of Teaching and Research, and records of competitive selection processes and professional profiles available online. Results: Of 435 survey respondents, 73.3% of the resident graduates continued postresidency training in a surgical subspecialty. Only 24.7% immediately started working in general surgery. Among the graduate trainees in general surgery, only 17.4% were exclusively dedicated to general surgery. Conclusions: The lack of confidence to perform procedures independently and the need for completing 4 years of training in the residency program in general surgery to start training in the professional field of interest, appear as the issued to be solved. We propose a 5-year program with a 2+3 model. The initial period comprises 24 months of basic training covering the general aspects of surgical practice. The second period of advanced training will provide thorough training in the subspecialty chosen. In the last year of the 5-year program trainees will have the opportunity to act as attending surgeons. General surgery, conceived as a subspecialty, would regain its status as an objective and no longer a pathway to become a subspecialist.
Ecoendoscopia en la estadificación del cáncer de esófago y de estómago
Authors:   Hospital Alemán de Buenos Aires., Galvarini Recabarren Martín ,   Sanatorio Argentino de San Juan. Argentina., Schlottmann Francisco , Angeramo C. Agustín , Kerman Cabo Javier , Casas M. Agustina , Mella José M. , Baron Bouxhoeveden Rudolf , Cimmino Daniel , Bugari Gustavo H.
Published: June 2021

Background: Gastric adenocarcinoma (GAC) and esophageal adenocarcinoma (EAC) are one of the leading causes of mortality from gastrointestinal cancer worldwide. Endoscopic ultrasound (EUS) has proved to be a valuable tool for preoperative staging of GAC and EAC in selected cases. Objective: The aim of this study was to evaluate the usefulness of EUS for staging of EAC and GAC and selecting patients who are candidates for neoadjuvant therapy, as compared with the previous stage before the implementation of EUS, in a surgical center in Argentina. Material and methods: Consecutive patients with EAC and GAC between 2013-2019 were included. Patients with criteria of unresectable cancer or who underwent emergency surgery were excluded. The sample was divided into four groups G1 and G2 (EAC with and without EUS, respectively) and G3 and G4 (GAC with and without EUS, respectively). The clinical and anatomopathological variables and survival were evaluated in all the groups. Results: A total of 89 patients were included, 40 with EAC (30 in G1 and 10 in G2, and 49 with GAC, 20 in G3 and 29 in G4. Of the patients undergoing EUS staging in G1, 23 (75%) received neoadjuvant therapy vs. 2 patients in G2 (20%) (P ≤ 0.005). Eight patients (40%) in G3 and 2 (7%) in G4 received perioperative chemotherapy (P ≤ 0.005). Lymph node metastases were observed in 9 (30%) of surgical specimens of EAC in G1 and in 60% in G2 (P ≤ 0.005), and in 45% in G3 and G4. After a mean follow-up of 36 months (6-72), we observed a non-significant trend toward higher overall survival and disease-free survival in patients undergoing EUS staging. Conclusion: EUS for preoperative staging pf EAC and GAC is a useful tool. Although the use of EUS use may be a challenging task in many centers in Argentina, future efforts are needed to include this test in selected cases for staging patients with these types of cancers
Linfomas extranodales de cabeza y cuello
Authors:   División Cirugía Oncológica. Hospital de Clínicas José de San Martín. Universidad de Buenos Aires. Buenos Aires. Argentina., Loccisano Matías H. , Montesinos María F. , Montesinos Manuel R.
Published: June 2021

Background: Extranodal lymphomas of the head and neck (ELHN) are rare neoplasms. The role of surgery for the diagnosis justifies thinking of these neoplasms among the differential diagnoses of the surgical disorders of the region. Objective: The aim of this study was to describe the clinical and pathological characteristics of ELHN, their location and association with systemic diseases in a series of patients undergoing surgery. Material and methods: The clinical records of 5489 patients undergoing surgery between June 2009 and June 2019 were retrospectively reviewed. Nineteen patients (0.35%) presented ELHN. Results: Mean age was 56 years (range: 17-84; SD 19.3) and 84% (n = 16) were women. The location of ELHN were the parotid gland (n =12, 63%), submaxillary gland (n = 3, 16%), salivary gland (n = 1, 5%), lacrimal gland (n = 1, 5%) and thyroid gland (n =1, 5%). All the tumors were non-Hodgkin lymphomas with the following subtypes: mucosa associated lymphoid tissue (MALT) lymphoma (n = 9, 48%), follicular lymphoma (n = 4, 21%), large B-cell lymphoma (n = 3, 16%), small B-cell lymphoma (n = 1, 5%), mantle cell lymphoma (n = 1, 5%), and anaplastic lymphoma (n =1, 5%). Four patients (21%) presented Sjögren syndrome at the moment of the diagnosis; three were MALT lymphomas and one patient had follicular lymphoma. The diagnosis was made with different surgical procedures. Conclusion: ELHN constitute a singular presentation of onco-hematology neoplasms. In our series, these tumors occurred within a wide age range and were more common in women. The parotid gland was more commonly affected. The diagnosis was made by surgical biopsy or resection of the area affected.
Programas de Optimización Perioperatoria, Enhanced Recovery y Fast-track: ¿Por qué están en auge? ¿Qué son realmente y cómo se implementan en la práctica?
Authors:   Servicio de Anestesiología, Hospital Italiano de Buenos Aires. Argentina, Mc Loughlin Santiago , Fraidenraij Uriel , Álvarez Adrián O.
Published: June 2021

From 2015 to date, the authors of this review have implemented several enhanced recovery periope- rative programs in Latin America. In the following article, we present a general introduction to the con- cepts of perioperative optimization and summarize our experience working in the region. Throughout this review, readers will also find the three fundamental elements of perioperative optimization. First, the creation and roles of a perioperative team. Second, the systematic and standardized registration of the surgical practice and its outcomes. And finally, the description of the continuous improvement cycle as a working method for adjusting daily practice based on the analysis of one’s own data.
Aplicación del programa ERAS® como una política de salud pública en el sistema de salud de Alberta, Canadá
Authors:   Departamento de Oncología, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canadá, Bisch Steven P. , Gramlich Leah , Nelson Gregg ,   Departamento de Medicina, University of Alberta, Edmonton, Alberta, Canadá
Published: June 2021

Enhanced Recovery After Surgery (ERAS®) was implemented across Alberta Health Services, a single payer publicly funded provincial health system starting in 2013. Implementation across multiple provincial sites in colorectal surgery reduced postoperative complications by 12% and median length of stay by one day. Subsequent implementation in gynecologic oncology reduced postoperative complications by 17% and length of stay by 2 days in high complexity surgery. Implementation has had an estimated net savings in the province of $7.22 million Canadian dollars (CAD) over 5 years with a return on investment of $1.05 to $7.31 for every dollar invested in the project. Patient involvement enabled success of the program, with support, education, and mitigation of patient stress identified as key components for success. Provider knowledge and motivation were essential to ensure ongoing compliance with ERAS guidelines. Provider education, and demonstration of improvement in patient outcomes using audit is one method to ensure continued motivation from care providers. Systemlevel leadership is essential to provide consistent messaging and support for initiatives, while providerlevel leadership in the form of physician champions and nurse coordinators ensures compliance and appropriate integration of ERAS into daily practice. Implementation of ERAS across a unified health care system has improved patient outcomes while saving resources. Further research into expansion of the program to community hospitals and all surgical domains is underway.
Implementación de un programa ERAS®
Authors:   Hospital Italiano de Buenos Aires, Ciudad Autónoma de Buenos, Mentz Ricardo E. , Campana Juan P. , Fraidenraij Uriel , Mata-Suarez Santiago M. , Álvarez Adrián O. , Mc Loughlin Santiago
Published: June 2021

Enhanced Recovery After Surgery (ERAS) is a model of care that involves the implementation of care pathways before, during and after surgery designed to improve patient’s experience throughout the perioperative period. Yet, the implementation of individual ERAS protocol elements is not sufficient. This approach requires the creation of a multidisciplinary work team, systematic recording of data and mthe use of the information recorded to implement a cycle of continuous improvement. Since 2015, 1331 patients have been recorded by Hospital Italiano de Buenos Aires. Median length of hospital stay was 4 days and median readmission rate was 7.3%. The overall adherence to the protocol elements was 56% (88% in the preoperative period, 60% in the intraoperative period and 39% in the postoperative period) There was a linear and inverse correlation between the adherence to the program and length of hospitalization for the most common surgical procedures, with an average decrease of one day of hospitalization for each 10% increase in adherence with the program for the most common surgical procedures. Despite these results, we have encountered difficulties in the data recording systems limiting the implementation of the cycle of continuous improvement. The creation of a multidisciplinary team, with fluent and efficient communication, is essential for the implementation of an ERAS® program capable of reducing length of hospital stay, morbidity and readmission rates.
In memoriam: Dr. Raúl A. Borracci
Authors:   Asociaciòn Argentina de Cirugía, Montesinos Manuel R.
Published: June 2021

Such was my feeling when I learned, on March 19, that Raul Alfredo Borracci had passed away at the age of 62
ON PHYSICAL RELIABILITY OF CONSTITUTIVE RELATIONS IN PLASTICITY FOR PLANE PROCESSES WITH BEND POINT
Authors:   Institute of mechanics and earthquake engineering, Tashkent, Uzbekistan, Abirov R. A.
Published: June 2021

В данной работе рассмотрены результаты экспериментов на сложное нагружение в виде двузвенных ломанных для слабоупрочняющегося материала. Дан анализ физической достоверности простейших вариантов теории пластичности для описания активных процессов сложного нагружения с изломом.
INVESTIGATION OF THE MODES OF MOTION OF A HYDRAULIC DRIVE WITH AXIAL-PISTON HYDRAULIC MOTORS AT LOW SPEEDS
Authors:   Omsk State Technical University, Omsk, Russia, Syrkin V. V. , Galuza Y. F. ,   Omsk State Technical University, Omsk, Russia, Abramova I. A. ,   Military academy of material and technical support named after general of the army A.V. Khrulev, St. Petersburg, Russia, Treyer V. A. ,   Omsk State Technical University, Omsk, Russia
Published: June 2021

Технологические машины различного назначения, в которых широко используются гидравлические приводы, постоянно совершенствуются по характеристикам мощности, скорости и точности указанных параметров, что требует вносить в конструкции этих приводов те или иные изменения, которые позволяют выдерживать режимы работы технологических машин в заданных переделах. Рассматриваются результаты исследования режимов работы нелинейного гидропривода с аксиально-поршневыми гидромоторами в условиях параметрического возбуждения автоколебаний, обусловленных нелинейным характером момента трения в торцевом распределителе гидромотора. Предложены математические модели режимов работы данного гидропривода на малых скоростях, представлена линеаризованная математическая модель и результаты исследования данного гидропривода в виде амплитудно- частотных характеристик, полученных при помощи гармонической линеаризации уравнений динамики. Результаты исследования позволяют оценить параметрические колебания гидропривода и оценить минимальную величину постоянной составляющей скорости, соответствующей началу периодических движений с остановками, что приводит к снижению точности выполнения технологических перемещений исполнительных механизмов технологических машин.
TO THE DEVELOPMENT OF THE THEORY OF CONTACT INTERACTION IN TWO-ROLL MODULES
Authors:   Tashkent Institute of Architecture and Civil Engineering, Tashkent, Uzbekistan, Khurramov Sh. R.
Published: June 2021

Приведены результаты исследования напряженно-деформационного состояния в двухвалковом модуле. Определены углы, определяющие характерные точки физической модели кривых контакта валков в случае, когда деформационные свойства слоя материала и эластичных покрытий валков заданы степенными зависимостями. Найдены формулы, для расчета углов захвата и выхода, углов, отделяющие зоны прилипания от зон скольжения отставания и опережения, нейтральных углов и углов максимума нормальных напряжений двухвалкового модуля. Установлено, что с увеличением коэффициента трения валка по обрабатываемому материалу приводить к уменьшению процентного содержания зон скольжения в кривой контакта в приводном валке. Выявлено, что с увеличением динамического коэффициента зона скольжения отставания уменьшается, а зона скольжения опережения увеличивается. Установлено, что чем больше скорость слоя материала, тем больше процентного содержания зоны прилипания в кривой контакта валков.
APPLICATION OF THE HERTZ EQUATION FOR CALCULATING THE PARAMETERS OF THE ELASTIC-PLASTIC IMPACT OF TWO SOLID DEFORMABLE BODIES
Authors:   Omsk State Technical University, Omsk, Russia, Chernyavsky D. I. , Chernyavsky D. D. ,   Omsk State Technical University, Omsk, Russia
Published: June 2021

Исследование динамики механического удара твердых деформируемых тел является актуальной задачей механики. Данная проблема связана с прочностными расчетами деталей машин и механизмов. Наиболее сложным случаем является прочностной расчет в условиях ударных и вибрационных нагрузок. Точные математические уравнения получены только для простых конструктивных элементов машин: шары, стержни, пластины, балки и т.д. Математическое описание динамики элементов машин сложной формы в условиях удара серьезно затруднено. Предлагается метод динамического прочностного расчета деталей машин с использованием контактной теории Герца. Для рассматриваемых случаев скорость удара двух тел не превышает 100 м/с.
EXPERIMENTAL STUDIES OF A VALVELESS NON SPOOL-TYPE PNEUMATIC PERCUSSION MECHANISM OF A HAMMER
Authors:   Novosibirsk State University of Architecture and Civil Engineering, Novosibirsk, Russia, Gruzin A. V. , Abramenkov D. E. ,   Siberian State Transport University, Novosibirsk, Russia, Gruzin A. V. ,   Omsk State Technical University, Omsk, Russia
Published: June 2021

Производство различных видов работ, как на горнодобывающих предприятиях, так и при строительстве промышленных, жилищных и гражданских объектов, требует применения специализированного оборудования, оснащенного навесными активными рабочими органами, например, пневматическими молотами. Анализ и выбор принципиальной схемы пневматического ударного механизма выполнены с использованием известных признаков-элементов и с добавлением конструктивных дополнительных расширяющих признаков-элементов. Это позволило разработать новую конструкцию бесклапанно-беззолотникового пневматического ударного механизма молота, для которой с помощью математической модели были проведены аналитические исследования ее режимов работы. Для уточнения степени достоверности параметров предлагаемой математической модели были выполнены экспериментальные исследования, которые проводились на экспериментальном образце пневматического ударного механизма.
NUMERICAL CALCULATION OF THE NATURAL VIBRATION FREQUENCIES OF THERMO-ELASTIC RODS TAKING INTO ACCOUNT THE EFFECT OF THE TEMPERATURE GRADIENT
Authors:   Akaki Tsereteli State University, Kutaisi, Georgia, Kikvidze O. G. , Sakhvadze G. G. ,   Mechanical Engineering Research Institute of Russian Academy of Sciences (IMASH RAN), Moscow, Russia, Sakhvadze G. Zh. ,   Mechanical Engineering Research Institute of Russian Academy of Sciences (IMASH RAN), Moscow, Russia
Published: June 2021

Рассматриваются упругие стержневые элементы, осевая линия которых в естественном состоянии есть плоская кривая, и после нагружения остается плоской кривой. Используются следующие допущения: поперечные нормальные сечения, плоские до деформации, остаются плоскими и нормальными к деформированной термоупругой осевой линии после деформации; температурное поле стационарное и неоднородное. Получены нелинейные уравнения движения стержня с учетом инерции вращения поперечного сечения и растяжимости осевой линии.
GEOMETRICALLY NONLINEAR ANALYSIS OF THIN SHELLS TAKING INTO ACCOUNT SHEAR DEFORMATIONS USING A VECTOR INTERPOLATION OF DESIRED QUANTITIES
Authors:   Volgograd State Agrarian University, Volgograd, Russia, Klochkov Yu. V. , Ishchanov T. R. ,   Volgograd State Agrarian University, Volgograd, Russia, Andreev A. S. ,   Volgograd State Agrarian University, Volgograd, Russia, Klochkov M. Yu. ,   Lomonosov Moscow state University, Moscow, Russia
Published: June 2021

Предложена конечно-элементная модель анализа геометрически нелинейного деформирования тонкостенной конструкции типа оболочки, построенная на принципах сдвиговой теории типа С.П. Тимошенко. В качестве основы данной модели рассматривается фрагмент поверхности исследуемого объекта в виде криволинейного четырехугольника с узлами, совпадающими с его вершинами. Искомыми неизвестными в узлах искривленного четырехугольника были выбраны приращения компонент вектора перемещения и частные производные этих приращений по естественным координатам поверхности исследуемого оболочечного объекта, а также приращения компонент вектора углов поворота нормали. Для получения интерполяционных выражений для искомых величин в работе была реализована принципиально отличающаяся от стандартной векторная форма интерполяционной процедуры. Принципиальной отличительной чертой вышеупомянутой формы интерполяции является составление интерполяционных зависимостей не для каждого искомого варьируемого параметра как изолированной скалярной величины, а для приращения вектора перемещения и приращения вектора углов поворота нормали, выступающих в роли интерполяционных объектов.