bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance of digital morphology analyzer Medica EasyCell assistant
Authors: Kim Hanah , Lee Gun-Hyuk , Yoon Sumi , Hur Mina , Kim Hyeong Nyeon , Park Mikyoung , Kim Seung Wan
Published: April 2023

Objectives

The EasyCell assistant (Medica, Bedford, MA, USA) is one of the state-of-the-art digital morphology analyzers. We explored the performance of EasyCell assistant in comparison with manual microscopic review and Pentra DX Nexus (Horiba ABX Diagnostics, Montpellier, France).

Methods

In a total of 225 samples (100 normal and 125 abnormal samples), white blood cell (WBC) differentials and platelet (PLT) count estimation by EasyCell assistant were compared with the results by manual microscopic review and Pentra DX Nexus. The manual microscopic review was performed according to the Clinical and Laboratory Standards Institute guidelines (H20-A2).

Results

WBC differentials between pre-classification by EasyCell assistant and manual counting showed moderate correlations for neutrophils (r=0.58), lymphocytes (r=0.69), and eosinophils (r=0.51) in all samples. After user verification, they showed mostly high to very high correlations for neutrophils (r=0.74), lymphocytes (r=0.78), eosinophils (r=0.88), and other cells (r=0.91). PLT count by EasyCell assistant highly correlated with that by Pentra DX Nexus (r=0.82).

Conclusions

The performance of EasyCell assistant for WBC differentials and PLT count seems to be acceptable even in abnormal samples with improvement after user verification. The EasyCell assistant, with its reliable performance on WBC differentials and PLT count, would help optimize the workflow of hematology laboratories with reduced workload of manual microscopic review.
Low voltage ride through control strategy for grid-tied solar photovoltaic inverter
Authors: Daravath Ramesh , Sandepudi Srinivasa Rao
Published: April 2023

This paper presents a low voltage ride through (LVRT) control strategy using an active power oscillations based reference current generation approach for grid tied solar photo voltaic (SPV) system under line-to-ground (LG) and double line-to-ground (LLG) faults. Proposed control strategy minimizes the harmonics injected into the grid, as well as oscillations in injected reactive power and DC-link voltage. Further this control strategy provides a dynamic control of active and reactive powers, the flow of sinusoidal currents into the grid, and avoids the disconnection between the utility grid and SPV system during faults. A proportional resonant (PR) current controller is developed in a stationary reference frame to achieve the power quality by fulfilling the grid codes. Simulation and experimental results are presented to highlight the merits of the proposed control scheme.
Biophotonic sensor design for the detection of reproductive hormones in females by using a 1D defective annular photonic crystal
Authors: Gandhi Sakshi , Awasthi Suneet Kumar
Published: April 2023

In this research work, we have proposed a one-dimensional (1D) defective annular photonic crystal (DAPC) (AB)5
CDC(AB)5 to identify the presence of reproductive progesterone and estradiol hormones in women. The periodicity of the proposed biosensing design made up of 1D annular photonic crystal (APC) has been broken by introducing a cylindrical cavity D of porous gallium nitride (GaN) material. The inner and outer faces of cylindrical cavity D are surrounded by concentric cylindrical buffer layers of magnesium fluoride (MgF2) material. We have used a modified transfer matrix method with the help of MATLAB software to carry out investigations pertaining to the proposed theoretical work. The two distinct categories of blood samples containing reproductive hormones of different concentrations have been used in this work. The sensitivity of proposed 1D DAPC varies between 159.673 nm nmol−1 L−1 to 170.1525 nm nmol−1 L−1 when a cavity is infiltrated with a blood sample having progesterone hormone whose concentration varies between 0 and 200 nmol L−1. Moreover, the sensitivity of the structure varies between 158.7816 nm nmol−1 L−1 to 170 nm nmol−1 L−1 under the influence of blood samples having estradiol hormones of different concentrations. In order to evaluate the performance of the proposed biosensor in the true sense we have also computed quality factor (Q) and figure of merit (FoM) values of the biosensor corresponding to both categories of blood samples of different concentrations. Our study shows that biosensors made up of 1D annular photonic structures are more efficient in comparison to the biosensors made up of planar 1D photonic crystals. Apart from detecting the reproductive hormones in females such kind of APC-based specialized biosensing devices may be very useful in the field of medical engineering and technology.
Evaluation of mechanical properties of fiber-reinforced syntactic foam thermoset composites: A robust artificial intelligence modeling approach for improved accuracy with little datasets
Authors: Nawafleh Nashat , AL-Oqla Faris M.
Published: April 2023

Fiber accumulation due to printing ink inconsistency makes additive manufacturing (AM) of reinforced thermoset syntactic foam composites difficult. This study predicts and analyzes the mechanical properties of AM-made carbon fiber-reinforced syntactic thermoset composites to overcome experimental limitations. Thus, an adaptive neuro-fuzzy inference system (ANFIS)-based model creates an accurate mechanical behavior prediction under a variety of conditions without experimental inquiry. Compression and flexure tests assessed the ANFIS model’s validation. The model’s predictions were very close to reality, validating the approach taken to improve the technical assessment of the created composites, which are perfect for weight reduction, mechanical improvement, and product complexity.
Physician stress in the era of COVID-19 vaccine disparity: a multi-institutional survey
Authors: Zahl Sarah , Mondal Debasis , Tolentino David , Fischer Jennifer A. , Jimenez Sherry
Published: April 2023

Context

Healthcare workers are at a high risk of infection during infectious disease outbreaks, such as the COVID-19 pandemic. Despite the availability of several vaccines against COVID-19, the absence of vaccination in patients and colleagues remains a continuous source of stress in healthcare workers. We conducted a survey of physician preceptors, both MDs and DOs, to explore the impact of differences in the patients’ and colleagues’ vaccination status on their well-being, stress, and burnout.

Objectives

The objective of this study is to determine whether exposure to unvaccinated patients and/or colleagues increases stress and burnout in physician preceptors by utilizing a self-reported survey.

Methods

This multi-institutional study was carried out in the United States in 2022. An online survey questionnaire was utilized to collect data from physicians working as preceptors for multiple academic institutions. The anonymous Qualtrics® survey utilized a modified version of the questionnaire from the expanded Physician Well-being Index (ePWBI) designed by MedEd Web Solutions (MEWS). Statistical analysis on both descriptive and qualitative data were performed. Utilizing a threshold of p≤0.05, data analysis revealed many statistically significant relationships between the variables.

Results

A total of 218 physician preceptors completed the survey. The survey results showed that physicians overwhelmingly (p < 0.001) felt that all patients (and healthcare workers) should be vaccinated. The results also indicated that physicians experienced more stress when working with unvaccinated patients (p<0.001), and these stressors were often associated with the physician’s gender and age. Furthermore, physicians stated that both their assessment and treatment plans were significantly different for vaccinated vs unvaccinated patients (p=0.039 and p=0.0167, respectively). Most importantly, stress levels (p<0.001) and burnout characteristics (p=0.024) were noted by physicians, both in themselves and in their colleagues.

Conclusions

Findings suggest that physician stress and burnout is a common theme due to the differences in vaccination status of patients admitted to COVID-19 clinics. Due to a more rapid progression of COVID-19 in unvaccinated patients, treatment plans for vaccinated vs unvaccinated patients were also considerably different.
Potential therapeutic effects of adjunct osteopathic manipulative treatments in SARS-CoV-2 patients
Authors: Jacob Benna , Sawhney Mehak , Sridhar Aarthi , Jacob Berlin , Muller Jeffrey , Abu-Sbaih Reem , Yao Sheldon C.
Published: April 2023

Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) affects various human organ systems, including the lymphatic, pulmonary, gastrointestinal, and neurologic systems. The utilization of osteopathic manipulative treatment (OMT) techniques has been clinically effective in the alleviation of various upper respiratory infection symptoms. Consequently, the use of osteopathic manipulative medicine (OMM) in SARS-CoV-2 patients as adjunct treatment can be beneficial in promoting overall recovery. This paper attempts to address the pathophysiology of SARS-CoV-2 infection at the cellular level and its downstream effects. Subsequently, osteopathic principles were investigated to evaluate potential therapeutic effects, providing a holistic approach in the SARS-CoV-2 treatment. Although the association between the benefits of OMT on clinical improvement during the 1918 Spanish influenza pandemic can be seen, further investigation is required to establish a direct correlation between OMT and symptom management in SARS-CoV-2.
Performance analysis of nuclear powered desalination unit based on MED-TVC: a case study for Saudi Arabia
Authors: Khan Salah Ud-Din , Najib Abdullah , Orfi Jamel
Published: April 2023

Nuclear desalination has been identified as an alternative option with much lower carbon dioxide emissions to provide fresh water by driving high capacity desalination plants. This work considers a theoretical analysis of using nuclear desalination to provide fresh water in three selected Saudi Arabian cities. It presents a theoretical model that integrates the characteristics of nuclear reactor, power cycle and desalination blocks. The power block includes three steam turbines and five feed water heaters. It is coupled via low pressure turbine to a multiple effect desalination unit integrated with a thermal vapor compressor encompassing eight effects, seven feed preheaters and a down condenser. The output includes work generated as function of fuel mass and reactor type, enrichment percentage, power and water production with different nuclear reactor type. Desalination performance indicators such as the fresh water production rate, gain output ratio (GOR), specific energy consumption (SEC) and specific cooling water mass flow rate have been evaluated and analyzed as function of sea water temperature for three specific Saudi cities. It was found that these indicators reflect better performance along a year for Jizan city than for Jubail and Tabuk. The case of Jizan city gives over the whole year more uniform values of water production rates, gain output ratio, specific energy consumption and cooling water mass flow rates.
The Objective Status of Subjective Facts
Authors: Sankey Howard
Published: April 2023

Some facts are objective. Some facts are subjective. Subjective facts are personal facts about individuals. It is the purpose of this short note to suggest that subjective facts are in fact objective facts about us. This applies not just to facts involving relations to entities that are independent of us, but to our tastes. It is an objective fact about us that we have the tastes that we do though there may be no objective matter of fact that our tastes reflect or fail to reflect.
Liquation Cracking in Row 3 Twin Turbine Vane Segment Caused by Malfunctioning Plasma Coating Gun
Authors: Neidel A. , Fischer B. , Gädicke T. , Ullrich T.
Published: April 2023

Transverse through-wall airfoil cracking was found in a row 3 twin turbine vane segment of a type used in heavy-duty gas turbine engines for power generation. A laboratory investigation determined liquation cracking (LC), a hot cracking mechanism, as the metallurgical cause of failure. As became apparent only after the investigation, the root cause of failure was a malfunctioning plasma gun used for thermal spraying the thermal barrier ceramic top coat onto the subject part.
Microbiota–gut–brain axis and related therapeutics in Alzheimer’s disease: prospects for multitherapy and inflammation control
Authors: Li Jiahao , Zhang Feng , Zhao Li , Dong Chunbo
Published: April 2023

Alzheimer’s disease (AD) is the most common type of dementia in the elderly and causes neurodegeneration, leading to memory loss, behavioral disorder, and psychiatric impairment. One potential mechanism contributing to the pathogenesis of AD may be the imbalance in gut microbiota, local and systemic inflammation, and dysregulation of the microbiota–gut–brain axis (MGBA). Most of the AD drugs approved for clinical use today are symptomatic treatments that do not improve AD pathologic changes. As a result, researchers are exploring novel therapeutic modalities. Treatments involving the MGBA include antibiotics, probiotics, transplantation of fecal microbiota, botanical products, and others. However, single-treatment modalities are not as effective as expected, and a combination therapy is gaining momentum. The purpose of this review is to summarize recent advances in MGBA-related pathological mechanisms and treatment modalities in AD and to propose a new concept of combination therapy. “MGBA-based multitherapy” is an emerging view of treatment in which classic symptomatic treatments and MGBA-based therapeutic modalities are used in combination. Donepezil and memantine are two commonly used drugs in AD treatment. On the basis of the single/combined use of these two drugs, two/more additional drugs and treatment modalities that target the MGBA are chosen based on the characteristics of the patient’s condition as an adjuvant treatment, as well as the maintenance of good lifestyle habits. “MGBA-based multitherapy” offers new insights for the treatment of cognitive impairment in AD patients and is expected to show good therapeutic results.
Study on the synthesis and properties of cardanol sulfonate
Authors: Liu Yue , Xu Hujun , Yang Jingguo , Gao Haiyan
Published: April 2023

In this work, using the natural product cardanol and chlorosulfonic acid as the main raw materials, the anionic surfactant cardanol sulfonate (CDS) was synthesised and investigated for its surface properties and thermodynamic properties using surface tension, conductivity and fluorescence methods. In addition, the application properties of CDS, such as foaming and cleaning ability were investigated and compared with those of sodium dodecylbenzene sulfonate (SDBS). The structure of the surfactant was characterised by FTIR, 1H NMR and MS. The Krafft point of the surfactant was below 25 °C, indicating good water solubility. The CMC values were determined by surface tension, conductivity and micropolarity measurements. The obtained CMCs agreed well within the measuring accuracy. The CMC increased with increasing temperature. As a function of temperature, the following CMC values were obtained: 5.13 × 10−3 mol L−1 (25 °C), 5.63 × 10−3 mol L−1 (35 °C) and 5.77 × 10−3 mol L−1 (45 °C). The values of surface tensions at the respective CMCs were γ
CMC = 44.47 mN m−1 (25 °C), 43.53 mN m−1 (35 °C), and 42.45 mN m−1 (45 °C). The application property results showed that the foaming capacity, foam stabilisation and cleaning ability of CDS and SDBS were similar to each other, indicating that CDS can be used as a raw material for commercial detergent production.
Ternary amalgams: expanding the structural variety of the Gd14Ag51 family
Authors: Hohl Timotheus , Nusser Lukas , Wulfes Jessica , Hoch Constantin
Published: April 2023

In intermetallic chemistry, the Gd14Ag51 structure type is rather common and has many amalgam representatives. Up to today, binary amalgams of this type have been described for M = Na, Ca, Sr, Eu, Yb, and the structure family still is growing. Yb11Hg54 is the only representative with a fully ordered crystal structure, and all other representatives exhibit individual disorder phenomena or patterns. The diversity of disorder phenomena in this structural family is unique. In order to shed a light on the underlying reasons for this unexpected structural complexity, we compare the available literature structure models with three new ternary variants, Yb10.7Sr0.3Hg54, Ca4.5Eu6.5Hg54 and Ca6.9Na4.1Hg54 (all in space group type

P

6
‾

$P\overline{6}$

, a = 13.5379(12), 13.5406(8) and 13.564(5) Å, c = 9.7488(14), 9.7149 and 9.810(7) Å for Yb10.7Sr0.3Hg54, Ca4.5Eu6.5Hg54 and Ca6.9Na4.1Hg54, respectively). Their crystal structures have been examined in detail on the basis of both single crystal and powder X-ray diffraction data. Each of the three new amalgams exhibits its own set of disorder phenomena that is again different from those of the respective binary variants. The synopsis of the crystal structures and their individual disorder phenomena indicates that the reason for the disorder phenomena cannot be found only by analyzing geometric details such as atomic radii quotients or coordination polyhedral volumina, and additional electronic reasons must be assumed.
The Friedmann–Lemaître–Robertson–Walker metric and the principle of equivalence
Authors: Melia Fulvio
Published: April 2023

The evidence in favor of a Universe expanding at a constant rate, in contrast to the various episodes of deceleration and acceleration expected in the standard model, has been accumulating for over a decade now. In recent years, this inference has been strengthened by a study of the Friedmann–Lemaître–Robertson–Walker (FLRW) metric in relation to Einstein’s principle of equivalence. This earlier work concluded that the choice of lapse function g

tt
= 1 characterizing the FLRW solution to Einstein’s equations is inconsistent with any kind of accelerated cosmic expansion. In this paper, we demonstrate and confirm this important result by directly testing the self-consistency of four well-known FLRW cosmologies. These include the Milne universe, de Sitter space, the Lanczos universe, and the R
h = ct model. We show that only the constantly expanding models (Milne and R
h = ct) are consistent with the principle of equivalence, while de Sitter and Lanczos fail the test. We discuss some of the many consequences of this conclusion.
Structural morphological, and thermal properties of nano bentonite and α-Fe2O3/bentonite nanocomposite
Authors: Sharma Pratibha , Kumari Sujata , Ghosh Debasree , Kumar Jitender , Vij Ankush , Brajpuriya Ranjeet Kumar , Rawat Pooja , Srivastava Chandra Mohan , Saini Sonia , Sharma Vivek , Hassan Md. Imtaiyaz , Majumder Sudip
Published: April 2023

Here, in this work, acid-activated bentonite and its nanocomposite with hematite nanoparticles were synthesized using the simple chemithermal and thermal coupling methods, respectively. The synthesized samples were investigated for morphological, compositional, structural, and thermal properties. Results suggested distortion in clay structure on acid activation and nanocomposite formation with improved thermal stability. Nanocomposite acts as a quencher for thermoluminescence and as an insulator in heat transfer reactions.
Imatinib use in the management of a patient with Doege–Potter syndrome
Authors: Paz-Ibarra Jose , Lu-Antara Jose , Uscamayta Brenda-Erendida , Martinez-Auris Jhancy , Valencia-Rivera Miriam , Sáenz-Bustamante Sofía , Delgado-Rojas Marialejandra , Salcedo-Vasquez Julia , Concepción-Zavaleta Marcio
Published: April 2023

Doege–Potter syndromeis a paraneoplastic syndrome characterized by nonislet cell tumor hypoglycemia due to a solitary fibrous tumor, which produces insulin-like growth factor II. In this report, we present the case of a 67-year-old male with recurrent and refractory hypoglycemia due to DPS successfully treated with imatinib. He initially presented with neuroglycopenic symptoms and dyspnea secondary to a giant tumor in the left hemithorax, which was totally resected. During follow-up, 7 years later, he presented with thoracoabdominal tumor recurrence associated with severe hypoglycemia and underwent subtotal tumor resection, with a subsequent improvement of symptoms. The following year, he had a recurrence of his intra-abdominal tumor, which was unresectable, associated with severe hypoglycemia refractory to dextrose infusion and corticosteroids, thus receiving imatinib with a favorable response. The clinical presentation, diagnostic approach, progression of the disease, and response to treatment with imatinib in the management of a patient with large, recurrent, and unresectable mesenchymal tumors with insulin-like growth factor-2 secretion causing hypoglycemiahighlight the importance of this case report.

Learning points

Doege–Potter syndrome (DPS) is a rare cause of tumoral hypoglycemia of non-pancreatic origin.

Some malignant or benignant neoplasms have ectopic secretion of insulin-like growth factor-2.

Total surgical removal is the principal treatment in patients with DPS.

Tyrosine kinase inhibitors management in DPS may contribute to improved tumor control in patients with unresectable tumors and severe hypoglycemia.
Actitudes y creencias hacia las variedades del español de España: castellano, andaluz y canario
Authors: Méndez Guerrero Beatriz
Published: April 2023

Las actitudes lingüísticas comprenden tanto las percepciones y creencias de los hablantes como sus emociones, sentimientos y reacciones (López Morales 2004). Desde que el estudio de las actitudes ganó protagonismo en los años 70 del siglo xx, se ha considerado de gran utilidad para profundizar en los procesos de variación y cambio lingüístico que se producen en las lenguas. Este trabajo presenta las actitudes directas e indirectas y el grado de identificación y proximidad de un grupo de hablantes jóvenes mallorquines, estudiantes de filología, hacia las tres variedades españolas del español: castellano, andaluz y canario (Moreno Fernández 2009). En el estudio, se ha seguido la metodología del proyecto precaves xxi, basada en la técnica de los pares falsos y las respuestas de diferencial semántico. Las conclusiones de la investigación sugieren: (1) que las variedades más reconocibles son la castellana y la andaluza; (2) que las valoraciones directas e indirectas no reflejan el mismo sentir dependiendo de la variedad, lo que conduce a casos de prestigio encubierto en las variedades castellana y andaluza; y (3) que el grado de identidad o proximidad mayor se refleja hacia el castellano, si bien los hablantes perciben diferencias entre el castellano central madrileño y el castellano periférico hablado en Mallorca.
Transformation of Folklore Images and Motifs in Dara Korniy’s Novel “Honykhmarnyk”
Authors: Vivcharyk Nataliia
Published: April 2023

The article examines folklore motifs and images of Dara Kornyi's novel "Honykhmarnyk", which is offered to be analyzed in the Ukrainian literature class in the 11th grade in the context of studying modern literature. It is indicated that the writer contributed to the development of the urban fantasy genre, and her work is rooted in folklore and mythology, which will allow students to deepen their knowledge of oral folk art, to draw parallels with the works they studied in high school, in particular Lesia Ukrainka's "Forest Song" and "Shadows of forgotten ancestors" by Mykhailo Kotsiubynskyi. It is proven that the synthesis of arts as a characteristic feature of the style, folklore echoes, poetic epigraphs, and mentions of the names of famous artists significantly expand the context of the work and generate allusions that should be analyzed in class. The title of the novel and the names of individual sections indicate its connection with mythology and folklore. The work contains many legends, tales, and folk songs, and artistically interprets the image of a duplicitous man who belongs to the corpus of Ukrainian "lower mythology". The article analyzes the main signs of a two-headed person and also focuses on rituals that can reduce the power of Gradobur. In parallel with the image of Honykhmarnyk, the history of the herbalist family, to which Alina belongs, is described. A whole series of legends, tales, and superstitions are woven into the artistic fabric of the work, in particular, about the power of charms that protect against evil spirits. One of the aspects of the research was the legend of the family curse and Alina's efforts to break the closed circle. The struggle between good and evil in the work is marked as a confrontation between black and white magic.

It has been proven that the Carpathian and Lviv topos play an important role in the novel, in the coordinates at which the main characters interact. It is revealed that nature reveals the true nature of the heroes, and the patron of the city guards the secrets of its inhabitants. It is illustrated that Dara Korniy resorts to erasing the boundaries between reality, memories, dreams, and real and parallel worlds, and paintings serve as a kind of portals to the afterlife. The main character tries to separate two beings and save the soul of her beloved. It is indicated that the journeys to the afterlife are filled with horror, so they resemble fragments of Gothic works, but the power of her love can overcome all obstacles.
Interuniversity Online Courses as Possible Approach to Improve Teaching During Crisis: a Ukrainian Case Study
Authors: Bayliak Maria , Abrat Oleksandra , Shmihel Halyna , Lushchak Volodymyr , Shvadchak Volodymyr
Published: April 2023

The war launched by Russia has created new challenges for universities, including massive student migration abroad and massive displacement of students within Ukraine from the frontline areas. Many students lost access to quality education or had their studies interrupted by the war. Recognizing these problems, universities are trying to find different solutions. One such approach may be to introduce inter-university online courses that will be recognized by partner universities. In this case study, we analyze the effectiveness of inter-university online courses as an approach to restoring education for students severely affected by the war and as a way to maintain the quality of education in small groups at universities. The online course "Integrated Life Science Course" was taken for analysis, which was taught both to biology students from different universities in Ukraine within the framework of the educational project supported by German Academic Exchange Service (DAAD). Using statistics on course registration and attendance, as well as interview methodology, we assessed students' motivation to participate in this online course, course satisfaction, and learning outcomes, and identified shortcomings and pitfalls to avoid in similar courses. The survey and the results of the final test show that the main motivator for students to register and study at the course was the desire to gain new knowledge for further professional growth. A scholarship was also an important argument to enroll in the course; however, it did not impact the motivation of students to study. The fraction of students that successfully passed the final exam (~70%) was equal in the cohorts that had and had not been awarded scholarships. Thus, the scholarship was not a motivator to complete the course and successfully pass the exam to receive the certificate. Therefore, in order for such courses to be productive and effective, it is necessary to emphasize student motivation during selecting procedure.
Cambio Climático, Identidad Cultural y Restauración Biocultural: el Caso de Tzintzuntzan; Michoacán, México
Authors: Lindig Cisneros Roberto , Barajas-Arroyo Marina , Gómez-Pineda Erika , Arroyo Robles Gabriela , Punzo-Díaz José Luis
Published: April 2023

[Introduction]: Conservation and restoration of the ecological and cultural heritage is a necessity given the current environmental crisis, in particular when considering the effects of climate change. This can be achieved through interdisciplinary research that allows the creation of strategies for restoring complex biocultural landscapes. [Objective]: To propose strategies for ecocentric, biocultural and productive ecological restoration in Tzintzuntzan (place of hummningbirds) a landscape dominated by precolumbian archaeological remains in the riverbanks of lake Paztcuaro, México, considering the expected effects of climate change. [Metodology]: A GIS was created with information about gthe socioenvironmental conditions of the study site, a climate change model was also elaborated for year 2050 and the loss of water lake water level was estimated. [Resultados]: From the present conditions of the vegetation, climatic modelling and the presence of archaeological remains we obtained that for the year 2050 most of the area (89%) of forests dominated by oaks and pines will have a climate appropriate for dry tropical vegetation. Considering the distribution of archaeological remains and the urban area we propose ecocentric, biocultural and production restoration strategies. [Conclusions]: A biocultural approach to restoration is desirable because it allows the recovery of ecological and cultural elements of the socioecosystem, with a emphasis in adaptation to climate change and the recovery of hummingbird habitat, being the hummingbirds the most important link between nature and culture in the region.
Bending behavior of separable glued-laminated timber (GLT)-steel beam combined with inclined screws,
Authors: Pang Sung-Jun , Oh Jung-Kwon
Published: April 2023

A separable glued-laminated timber (GLT, Larix kaempferi Carr.)-steel beam system is presented in this work for easy recycling at the time of disposal. The minimum thickness of steel required to induce compressive GLT failure was assembled with GLT by inclined screws. In a total of 8 GLTs, 3 GLTs were not reinforced (control group), and 5 GLTs were reinforced with steel plates (comparison group). In the GLT in the comparison group, a steel plate (SPHC, yield strength: 227 MPa, modulus of elasticity 166.33 GPa) was installed with screws (∅9x160mm, 45°). The deflection and load of specimens were measured by a third-point bending test to derive their bending stiffness and load-carrying capacities. All specimens in the control group showed brittle tensile failure, but all specimens in the comparison group showed ductile behavior and maintained a load-carrying capacity of about 30 kN. After the compression failure of the GLT, there was no damage to the screw connection, while the steel plate was extended. Based on the behavior of the steel, a GLT-steel beam prediction model was developed, similar to the structural design method for reinforced concrete.
Hornification in commercial chemical pulps: Dependence on water removal and hornification mechanisms
Authors: Sjöstrand Björn , Karlsson Carl-Anton , Barbier Christophe , Henriksson Gunnar
Published: April 2023

Understanding cellulose hornification provides crucial information regarding drying of pulp, paper, and other cellulosic materials as well as recycling them. By measuring drainage, fiber width, and water retention value of hardwood and softwood pulps before and after sheet forming and after different drying procedures at different achieved levels of solids, the hornification was evaluated. The water retention value was also measured for the pulps when dried from acetone to observe what happens when hydrogen bonds are not available in the liquid phase. The drainage and fiber width decreased with increasing solids content; the fibers became increasingly stiff with increased water removal. Water retention measurements indicated that hornification is a stepwise process with large drops in fiber flexibility as soon as the fibers are being processed and later after a certain amount of water has been removed. In sum, the fibers must achieve a certain solids content to show hornification, and hydrogen bonds in water draw the cellulose surfaces together to create hornification. The mechanism of hornification is believed to be driven by hydrogen bonds and related to the distance between cellulose chains inside the fiber wall. Other types of bonds are probably also present and help with the irreversibility of hornification.
Comparison of variability in leaves and roots nutrient contents of Persian oak (Quercus brantii Lindl.) in drought affected declining forests
Authors: Hosseini Ahmad
Published: April 2023

Drought-induced crown dieback depends on plant nutrient status. This research examined the leaves and roots nutrients of Persian oak trees (Quercus brantii Lindl.) under the effects of drought and tree decline. The leaves and roots of oak trees were sampled randomly on the four main sides of their crown to analyze the N, P, K, Ca, and Mg. In healthy and declining trees, the N, P, and K content in the leaves was higher than in the roots, while the Ca content in the leaves was lower than in roots. The N and P in the roots of healthy trees had decreasing temporal changes, but these elements did not have significant temporal changes in the roots of declining trees. Leaf P showed decreasing temporal changes. The temporal decrease of root N and P and leaf P showed a negative effect of drought on Persian oak trees by reducing their ability to absorb water and nutrients and transfer them to their leaves. The higher concentration of elements in the leaves of oak trees, in addition to showing the decrease in the absorption of elements by the roots from the soil, can indicate a protective mechanism of oak trees against drought stress.
Management of pain comfort disorders in post laparatomi patients
Authors: m Agussali , Pont Anna Veronica , i Surian , Donsu Jenita DT , Gentingdatu Sofietje , Gasma Asmawati , Sonda Maria , Rahmawati Ros
Published: April 2023

Laparotomy is a surgical procedure in the abdominal area by opening the abdominal wall to reach the contents of the abdominal cavity that are experiencing problems such as bleeding, perforation, cancer, and obstruction. The Case numbers of laparotomy each year increase by 15% in Indonesia. South Sulawesi is one of the province that the number of laparotomy cases increasing significantly. The general purpose of this study was to determine the description of the implementation of nursing care in post-laparotomy patients in the treatment of discomfort and pain disorders. From the results of the case studies, it is known that nursing actions teach breathing relaxation techniques in providing effectiveness in reducing pain intensity in both patients; this is in line with existing theory.
А classification of text as images using neural networks pre-trained on the imagenet
Authors:   Central Research Institute of Armaments and Military Equipment of Armed Forces of Ukraine, V Slyusar
Published: April 2023

The article proposes a new approach to solving text classification tasks using pre-trained convolutional neural networks for image processing. A comparison of the training results of different neural network architectures was performed for the dataset of text reviews about the Tesla electric car. The obtained results allowed us to conclude that among the analyzed variants of text dataset preliminary preparation, the bag of words (BoW) method provides the best classification accuracy results on average. When using the EfficientNetB0 neural network previously trained on the ImageNet dataset, this approach allowed to obtain an average class accuracy of texts classification of 99.5%. The embedding procedure is somewhat inferior to the BoW method. However, if the proposed variant of data augmentation based on an additional Embedding layer is applied, it can give a more advantageous result for some neural networks. In particular, the neural structure based on Xception in this case made it possible to achieve an accuracy of 98.9%, which slightly exceeded the accuracy recorded for a similar neural network on the BoW dataset (98.4%). The Word2vec method turned out to be the least successful option for text digitization, although it is possible that its significant loss in accuracy can be reduced with a better choice of text vectorization parameters. The proposed approach regarding the combination of the BoW text dataset preparation method with the additional Embedding procedure as part of the neural network deserves attention. Such a combination in the case of EfficientNetB0 made it possible to achieve a relatively high accuracy of 98.7%, which gives reasons to recommend the use of this combination as one of the options that should be tested at the stage of choosing the best neural network architecture.
Information-analytical technology for monitoring the flow of visitors to the university
Authors:   Lviv Polytechnic National University, V Hrytsyk , O Babii ,   Lviv Polytechnic National University
Published: April 2023

In the 21st century, one of the most widespread problems in developed countries is the unraveling of complex tasks related to the security of citizens. An example is the need to conduct a security check at universities, when at one checkpoint there may be a need to let a thousand people pass within 5 minutes. Inspection of each (even a formal presentation of the document) will lead to the disruption of 4 classes; automated turnstiles will not ensure quality inspection + queues will be created (or will require many turnstiles that will actually be used for a short time). The Covid'19 pandemic only transfers the problem to another plane - a distance of one and a half meters + the risk of infecting the guard, who will turn into a source of infection. Military and, especially, terrorist events (when civil infrastructure objects with a large concentration of civilians become the targets of attacks) in Ukraine show the need to simultaneously ensure high throughput and for people and the safety of the object itself. The paper considers the concept of impersonal monitoring of the number of visitors. A safe approach is considered, when a recognition system based on the use of artificial neural networks allows checking and accompanying a large number of people impersonally at the same time. The system is implemented as a pattern recognition technology with statistical analysis. The system (visualization in the figures in the text) was tested on the video streams of the security cameras of the main building of the Lviv Polytechnic. The purpose of the work is the first phase of testing the hypothesis of the possibility of impersonal verification by using several impersonal classifiers. In the work, people are recognized not by their faces, but by a large set of parameters that allow classifying a person, but not identifying them.
Using Thumbnail Length Bounds To Improve Audio Thumbnailing For Beatles Songs
Authors:   International Research and Training Center for Information Technologies and Systems, Ukraine, D Zasukha
Published: April 2023

Optimising the parameters of the audio thumbnailing procedure can improve the final results. Previously, experiments with the thumbnail length parameter have shown strong potential to enhance thumbnail boundaries detection for Beatles songs. However, usage of the thumbnail length parameter has been limited to only changing the thumbnail length lower bound. The purpose is to use the thumbnail length upper bound in combination with the lower bound to improve thumbnail boundaries' detection for Beatles songs. I experiment with the thumbnail length upper bound while fixing the lower bound, then analyse the F-measure results based on segment boundaries. I use a thumbnail procedure with a repetition-based fitness measure as the foundation. The results demonstrate that the thumbnail length upper bound can increase an estimated thumbnail boundaries' accuracy for Beatles songs. I select a pair of lower and upper bounds that slightly improves the F-measure based on segment boundaries, unlike using only the lower bound. In conclusion, this study optimises the thumbnail length bounds to improve the audio thumbnailing procedure with a repetition-based fitness measure for Beatles songs. It is demonstrated that the upper bound can improve the F-measure if chosen correctly. Unexpectedly, the upper bound can be omitted without losing much in the accuracy of thumbnail boundaries' detection. Additionally, I indicate further directions to optimise thumbnail length bounds for popular music and its genres (like pop, rock). Also, I describe other supplemental tasks for future work.
Modern vizualization technologies fusion – the way to artificial intellectual systems
Authors:   V. M. Glushkov Instituteof Cybernetics of the National Academy of Sciences of Ukraine, Ukraine, L Malinovskii
Published: April 2023

To create artificial intelligent systems that receive information in the form of images: industrial robots, autonomous vehicles, modeling of objects or the environment, video surveillance, video data can be presented as a sequence of images from various cameras or sensors, of which lidars and cameras are the most studied and discussed. The work reveals and analyzes the possibilities, advantages and disadvantages of these computer vision technologies. Examples are given and researched ways, directions and prospects for the development and improvement of lidar systems. It is shown what new possibilities for autonomous intelligent unmanned systems are opened by the combined usage of cameras and lidars. Such fusion makes it possible to use the advantages of both technologies, to solve problems that seemed insoluble yesterday. It is clear that the symbiosis of these two devices, which work in real time, is crucial for many applications such as autonomous driving, industrial automation and robotics. Especially in the case of autonomous vehicles, efficient fusion of data from these two types of sensors is important for object depth detection as well as object recognition at short and long distances. Since both sensors are capable of simultaneously capturing different environmental attributes, integrating these attributes with an efficient data fusion approach greatly improves reliable and consistent environmental perception.
Modes of psycho-informational interaction of a human operator with technical, information and intellectual systems
Authors:   International Institute of Socionics, Ukraine, A Bukalov
Published: April 2023

A decrease in the attention of the operator or his incorrect reaction during prolonged interaction with the technical system is one of the most serious problems. From the point of view of the theory of information metabolism of the psyche - socionics - this means that the human psyche does not receive adequate information signals that support its necessary working state, concentration of consciousness, level of attention, etc. The solution to this problem is connected with the definition of the information characteristics of the technical system and with the construction of adequate information interaction in the integral complex “operator - technical system”. It is achieved by using the method of socionical analysis and modeling. Knowledge the information structure of a technical system gives opportunity to predict a number of features of its behavior. It gives additional significant information about the parameters that must be taken into account for adequate monitoring of the system's behavior. The second task is related to the form of providing the system with signals to the operator for the subsequent adequate reaction. A human operator has a certain type of information metabolism, and receiving information on some informational aspects is familiar and convenient for him, but on the other is associated with tension. To solve this problem there are identified and considered 16 possible specific modes of psycho-informational interaction of a human operator as a carrier of a certain socionic type of information metabolism with technical or electronic systems, including artificial intelligence systems. These modes can be complementary, resonant, neutral or non-complementary. The specificity of psycho-informational interaction is certainly important from the point of view of efficiency and safety.
On the influence of fuzzy perception of the time passage speed on the solutions of optimization planning problems
Authors:   Taras Shevchenko National University of Kyiv, Ukraine, E Іvohin , V Gavrylenko ,   National transport university, Ukraine, K Іvohina ,   National transport university, Ukraine
Published: April 2023

The paper considers an approach to the construction of fuzzy structured numerical sets based on the formation of a fuzzy original of a special type with subsequent replication on the number axis. The constructive principle of fuzzy original formalization is to define a fuzzy triangular number with the appropriate support. A variant of the formation of fuzzy numerical sets, formalizing the "fast" and "slow" passage of time, is proposed. The developed technique allows us to propose a solution to the problem associated with the formalization of the subjective perception of the time reference in processes involving a person, to obtain results and evaluate the impact of fuzzy description and taking into account the dynamics of the time reference on the solution of various optimization problems. A general approach to the formation and solution of fuzzy linear optimization problems is considered, the transition from fuzzy to parametric formulation in the Bellman-Zade form is described. Examples of the use of fuzzy flow of time for different statements of tasks that arise when determining the order of the set of tasks within a given time interval with or without additional restrictions on the execution process are considered. An approach is proposed for the correction of the initial time distribution plans, taking into account different rates of time counting. A mathematical model of the fuzzy traveling salesman problem is formulated as a problem of finding a route to visit a given number of cities without repetitions with a minimum travel time with time parameters specified as right fuzzy numbers, the support value in which depends on various external conditions and factors. The results of calculations of solutions of fuzzy optimization problems are obtained. The influence of the speed of the passage of time on the solution of the considered optimization problems is determined.