bluuebunny/crossref_metadata_2025 huggingface dataset:
Diagnosis of the Formation of Communicative Skills in Children 4–5 years old with Disabilities Attending a Preschool Educational Institution
Authors:   Krasnoyarsk Regional Institute for Advanced Training and Professional Retraining of Education Workers, Trifonova Svetlana S.
Published: March 2023

The article deals with the issues of diagnosing the formation of communicative skills in children 4–5 years old with disabilities in a preschool educational institution. Considerable attention is paid to the study of the components that influence the formation of communication skills in 4–5 year old children with disabilities. The results of this diagnostic study will allow a differentiated approach to the development of organizational and pedagogical conditions for the formation of communicative skills, as well as the intellectual and creative abilities of a modern child. The purpose of the article is to interpret the results of a study of the levels of formation of communicative skills obtained during the diagnosis of components (communicative activity, communicative qualities and communicative actions) that determine the communicative skills of 4–5 year old children with disabilities. Methodology. As part of the scientific work, in substantiating and implementing the organizational and pedagogical conditions for the formation of communicative skills, it was necessary to determine the components of communicative skills that can be used to form communicative skills in play and cognitive activities in children 4–5 years old with disabilities. We have adapted, modified methods for identifying the level of development of communicative activity (M. I. Lisina), determining the communicative qualities of a person and communicative actions (A. M. Shchetinina, M. A. Nikiforova). A significant rank correlation of three components (communicative activity, communicative qualities, communicative actions) made it possible to determine the criteria for the formation of communicative skills (the ability to make contact, maintain a dialogue, take initiative in communication, etc.). Based on the severity of the indicators, the levels of formation of communicative skills in children 4–5 years old with disabilities were developed: a successful level, a sufficient level, an insufficient level. In conclusion, it is concluded that the presented results of a diagnostic study aimed at identifying the levels of formation of the components (communicative activity, communicative qualities, communicative actions) that determine communicative skills, made it possible to trace the dependence of the three components that affect the formation of communicative skills in children 4–5 years with disabilities. These data will allow a differentiated approach to the development of organizational and pedagogical conditions for the formation of communicative skills.
Adult Bone Marrow-Derived Mesenchymal Stem Cells Seeded on Tissue-Engineered Cardiac Patch Contribute to Myocardial Scar Remodeling and Enhance Revascularization in a Rabbit Model of Chronic Myocardial Infarction
Authors: Zhang Jue , Wu Mingjiang , Zhang Xiaoqiang , Yang Mingli , Xiong Tingwang , Zhi Wei
Published: March 2023

Background: Although the transplantation of tissue-engineered cardiac patches with adult bone marrow-derived mesenchymal stem cells (MSCs) can enhance cardiac function after acute or chronic myocardial infarction (MI), the recovery mechanism remains controversial. This experiment aimed to investigate the outcome measurements of MSCs within a tissue-engineered cardiac patch in a rabbit chronic MI model.
Methods: This experiment was divided into four groups: left anterior descending artery (LAD) sham-operation group (N = 7), sham-transplantation (control, N = 7), non-seeded patch group (N = 7), and MSCs-seeded patch group (N = 6). PKH26 and 5-Bromo-2’-deoxyuridine (BrdU) labeled MSCs-seeded or non-seeded patches were transplanted onto chronically infarct rabbit hearts. Cardiac function was evaluated by cardiac hemodynamics. H&E staining was performed to count the number of vessels in the infarcted area. Masson staining was used to observe cardiac fiber formation and to measure scar thickness.
Results: Four weeks after transplantation, a remarkable improvement in cardiac functionality could be distinctly observed, which was most significant in the MSCs-seeded patch group. Moreover, labeled cells were detected in the myocardial scar, with most of them differentiated into myofibroblasts, some into smooth muscle cells, and only a few into cardiomyocytes in the MSCs-seeded patch group. We also observed significant revascularization in the infarct area implanted in either MSCs-seeded or non-seeded patches. In addition, there were significantly greater numbers of microvessels in the MSCs-seeded patch group than in the non-seeded patch group.
Sternal Reconstruction Using 3D-Printed Titanium Custom-Made Prosthesis for Sternal Dehiscence After Cardiac Surgery
Authors: Intihar Urška , Železnik Jernej , Brajlih Tomaž , Drstvenšek Igor , Hudak Radovan , Antonič Miha
Published: March 2023

Sternal dehiscence is an important complication that increases mortality and morbidity in cardiac surgery. Titanium plates have been used to reconstruct the chest wall for a long time. However, with the rise of 3D printing technology, a more sophisticated method, is making a breakthrough. Custom-made 3D-printed titanium prostheses are increasingly used in chest wall reconstruction because they allow almost perfect fitting to the patient’s chest wall and lead to good functional and cosmetic results. This report presents a complex anterior chest wall reconstruction using a custom-made titanium 3D-printed implant in a patient with a sternal dehiscence after coronary artery bypass surgery. At first, reconstruction of the sternum was performed using conventional methods, which failed to give adequate results. Finally, a 3D-printed titanium custom-made prosthesis was used for the first time in our center. On the short- and mid-term follow up, good functional results were achieved. In conclusion, this method is suitable for sternal reconstruction after complications in the healing process of median sternotomy wounds in cardiac surgery, especially where other methods do not provide satisfactory results.
El horror en la literatura
Authors: González Grueso Fernando Darío
Published: March 2023

A partir del ensayo “Supernatural Horror in Literature”, de H. P. Lovecraft, hemos construido un modelo descriptivo coherente del género literario del horror con sus relaciones internas y externas, y que bien podría servir de punto de partida para posibles ampliaciones. Para ello, hemos cotejado, revisado y desarrollado determinados conceptos de los estudios clave sobre el miedo, desde  Aristóteles hasta los más recientes acercamientos, pasando por Radcliffe, Freud, Delumeau, Kristeva, Carroll, y Jackson, entre otros, y hemos determinado las diferencias entre dos géneros tan cercanos como el terror y el horror. El presente artículo analizará diversos acercamientos teóricos al respecto, que van desde la historia de la literatura, al psicoanálisis, la psicología y la teoría literaria, buscará puntos en común y desarrollará conceptos teóricos clave para la demarcación del genero del horror, y que es, desde hace tiempo, un género perfectamente delimitado.
The influence of speed and power exercises in the training process of qualified wrestlers
Authors:   German Sport University Cologne, Korobeynikov G. , Tropin Y. ,   Kharkiv State Academy of Physical Culture, Perevoznyk V. ,   Kharkiv State Academy of Physical Culture, Bochkarev S. ,   National Technical University «Kharkiv Polytechnic Institute», Katykhin V. ,   National Academy of National Guard of Ukraine
Published: March 2023

Purpose: to develop complexes of exercises of speed and power orientation and experimentally substantiate their influence in the training process of qualified freestyle wrestlers. Material and methods. The following methods were used to solve the tasks of the research: analysis of scientific and methodical information, Internet sources and generalization of the best practical experience, pedagogical testing; timing; pedagogical experiment, methods of mathematical statistics. The pedagogical experiment was attended by 20 qualified freestyle wrestlers aged 17-19 years. Sportsmen were divided into two groups: control (n=10) and experimental (n=10). The pedagogical experiment lasted two months. The control group was engaged in the curriculum for children and youth sports schools, and the wrestlers of the experimental group used the developed sets of exercises in the training process. Results: the analysis of scientific and methodical information, Internet sources and generalization of leading practical experience shows that the level of development of speed and power fitness of a wrestler is of great importance when performing various technical and tactical actions. Complexes of exercises for the development of speed and power qualities of qualified freestyle wrestlers were developed and their effectiveness was tested in a pedagogical experiment that lasted two months. At the beginning of the experiment the control indicators of high-speed and power fitness between the control and experimental groups according to Student's t-criteria did not reveal significantly significant differences (p>0,05, t-value ranges from 0,34 to 0,75). At the end of the experiment the indicators of speed and power fitness of wrestlers of the experimental group are significantly higher (p<0,05), almost in all tests. Except for the tests «10 throws with a partner's tuck» and «10 throws with a partner's deflection» the results are also better in the wrestlers of the experimental group, but they are not reliable (p>0,05), this is due to the fact that these exercises were performed by all sportsmen in large volumes during training, they are associated with the improvement of wrestling technique. Conclusions. The received data testify that the qualified wrestlers of the control group at the end of the pedagogical experiment at testing of high-speed and power qualities the improvements in tests from 0,9 % to 4,1 % were observed, and at sportsmen of the experimental group the improvement of results at the end of the pedagogical experiment is considerably higher - from 4,2 % to 26,6 %.
Comparative analysis of the technical and tactical arsenal of men and women in sumo
Authors:   Kharkiv State Academy of Physical Culture, Holokha V. , Tropin Y. ,   Kharkiv State Academy of Physical Culture
Published: March 2023

Purpose: on the basis of the analysis of competitive activity, make a comparative analysis of the technical and tactical arsenal of men and women in sumo. Material and methods. The following methods were used to solve the research problems: analysis of scientific and methodological information and Internet networks, generalization of best practical experience, analysis of protocols and video recordings of fights of amateur sumo wrestlers, the method of mathematical statistics. An analysis of 48 fights at the 2022 World Games in Birmingham (USA) was conducted. The final and semi-final bouts of amateur sumo wrestlers were analyzed (24 bouts for men and women each). Results: based on the analysis of scientific and methodical information, Internet sources and the generalization of best practical experience, it was established that the problem of analyzing competitive activity and determining the main technical and tactical actions of sumo wrestlers is relevant for conducting research. The analysis of the competitive activity of amateur sumo wrestlers allowed us to identify 21 technical and tactical actions that were carried out at the 2022 World Games in Birmingham (USA): Asitori (4,3 % of all tehnical and tactical actions), Watashikome (2,2 %), Isamiashi (4,3 %), Yorikiri (23,9 %), Yoritaoshi (2,2 %), Kimedashi (2,2 %), Kotenage (4,3 %), Okuridashi (2,2 %), Osidashi (10,9 %), Ositaoshi (4,3 %), Okurihikiotoshi (2,2 %), Sitatenage (4,3 %), Sotokomata (2,2 %), Sukuinage (4,3 %), Uwatenage (4,3 %), Uwatehineri (2,2 %), Hatakikomi (2,2 %), Hikyotoshi (8,8 %), Tsukidashi (2,2 %), Tsukyotoshi (4,3 %), Tsuridashi (2,2 % of all tehnical and tactical actions). Conclusions. It was established that amateur sumo wrestlers used only 26,25 % of technical and tactical actions from the entire arsenal of sumo wrestling in the final and semi-final bouts. So, male sumo wrestlers performed 17,50 %, and female sumo wrestlers – 15,00 % of techniques from the entire technical and tactical arsenal. The main technical and tactical actions performed by men and women in sumo wrestling are determined. The most common technique performed by all sumo wrestlers was yorikiri, men performed it 6 times (26,5 %), and women - 5 times (21,7 %). The obtained data indicate the importance of the technical and tactical preparation of athletes as a factor that determines success in sumo wrestling
Features of individualization in martial arts
Authors:   German Sport University Cologne, Korobeynikova L. , Tropin Y. ,   Kharkiv State Academy of Physical Culture, Chornii I. ,   Borys Grinchenko Kyiv University, Korotya V. ,   National Aviation University, Sovgiria T. ,   National Aviation University
Published: March 2023

Purpose: to establish the features of individualization in martial arts based on the analysis of scientific and methodological information, the Internet and generalization of best practices. Material and methods. The following methods were used to conduct the study: analysis of scientific and methodological information and the Internet, generalization of best practices. Results: the analysis of scientific and methodical information, Internet sources and generalization of the best practical experience allowed to establish that the problem of individualization of training of qualified sportsmen has always remained an actual direction for research. An important feature of practical work at the stages of in-depth improvement and realization of individual capabilities of wrestlers is its selectivity in accordance with the unique properties of each student. At these stages, frontal and group approaches are increasingly giving way to an individual approach to the conduct of educational and training work. Specialists in different types of martial arts believe that when planning the means and methods of sports training in the training process of martial artists it is necessary to take into account the peculiarities of athletes of different weight categories and styles of conducting a competitive match (fight, battle). Thus, the authors provided practical recommendations on the use of means and methods of sports training in the training process of martial artists of different weight categories and styles of confrontation. Conclusions. The results of the conducted research showed that in the management of the formation of the individual style of confrontation of qualified sportsmen in martial arts it is necessary to focus on the following main factors: on the most effective, widespread techniques; on the morpho-functional abilities of the sportsman; on his individual motor giftedness; on the development of physical qualities; on the peculiarity of the nervous system. It is determined that when drawing up a prospective training plan for qualified martial artists, it is necessary to take into account the reaction of the athletes' body to physical activity, depending on the weight category and style of confrontation.
Incidence and Management of Retinoblastoma
Authors: Khan Nisar Ahmed , Khan Saeed Ahmed , Khan Aftab Ahmed , Khan Aisha , Khan Atiqa , Khan Sobia
Published: March 2023

This was a retrospective as well as prospective study of fifty (50) cases of retinoblastoma in series during the study period from January 2005 to December 2015, conducted at Liaquat Medical College Eye hospital and Indus Medical College Hospital, Pakistan. The average incidence of retinoblastoma in cases presented in our department was 4.5 cases per year with 0.8 cases per year bilateral and 3.7 cases per year with unilateral involvement respectively. The minimum age in this series was 15 days and maximum age was 8 years, mean age being 3.46 years. Out of these 50 cases, 27(54%) were male and 23(46%) were females. In most of the cases diagnosis was made on clinical grounds and histopathological reports of the biopsy specimens. Other measures like plain X-ray orbit, CT scan, ultrasonography (A and B Scan) and studies of blood chemistry were used where ever needed. Majority of our cases were found to be in a fairly advanced stage (an aplasia grade severe) that is extending beyond the sclera in the orbital tissues. In 4 cases cat’s eye reflex noted. Out of these cases 3 were having involvement of the other eye extensively while in 4th case the other eye was not involved at all. Of the remaining cases 11(22%) were having vitreous seeding, 16(32%) showed extension up to the sclera and 22(44%) extended to involve the orbit. Only one case presented with the involvement of regional lymph nodes. All those cases that underwent modified exonerations were sent to radio isotope center for further management with radiation and/or chemotherapy depending upon the nature of spread. One patient who had the regional lymph nodes involvement, though did not show extra ocular spread in the orbit, underwent chemotherapy following enucleations.2 cases which were diagnosed in very early stage involving the posterior retina behind equator were managed by 60 Cobalt radioactive plaques insertion over the sclera at the site of lesion, left in place till such time as advised by the oncologist of the radio isotope center. A total of 28 enucleations and 19 modified exentrations were carried out. Recurrences were noted in 13 cases, no surgery was done in these cases and they were referred to radio isotope center at Jamshoro, Pakistan for further management with radiation or chemotherapy. In this series no case was found to have distant metastasis anywhere including long bones and other viscera of the body. 12 cases were lost to follow up at different stages of management and 6 of the cases died of unknown cause.
Acanthamoeba Keratitis - A Diagnostic Dilemma: A Case Report
Authors: Panwar Praveen , Sharma Kalpana
Published: March 2023

Acanthi amoeba keratitis presents as diagnostic dilemma as it mimics herpes simpex viral keratitis. It is also a diagnostic challenge due to lack of awareness, difficulty in diagnosis which requires strong clinical suspicion and lack of effective treatment further complicates its management. We report a case of 47years old female with pain, redness and watering having deep stoma ring infiltrates. The strong suspicion based on clinical findings and failure to respond to antiviral therapy prompted us to investigate her further and the diagnosis of acanthi amoeba keratitis was made although there was no history of contact lens wear. Inspite of full diagnostic work up for bacterial, fungal and viral corneal pathogen, the diagnosis of Acanthi amoeba can be easily missed, therefore one must keep the possibility of this rare entity.
Nonshivering thermogenesis revisited: sympathetic and non-sympathetic contributions
Authors: L Tulp Orien
Published: March 2023

Factors of diet and environment contribute to complementary, additive mechanisms that influence the magnitude of diet induced thermogenesis generated in man and animals. Both short terms sympathetically mediated and longer acting thyroidal mediated pathways have been identified and appear to function in a metabolically coordinated fashion to facilitate biochemical and physiologic pathways of energy balance implicating multiple organs and peripheral tissues during periods of over- and under-nutrition. In a congenic lean rodent model known to express parameters of environmentally and diet induced mediated thermogenesis, thyroidal and sympathetic contributions each contributed to approximately 50% of the relative increase in VO2 in quietly resting animals after consuming a high energy palatable diet as determined in the presence vs. absence of α-methylparatyrosine, a sympathoplegic chemical agent. In contrast, in the obese phenotype of the corpulent and other rodent strains, both sympathetic and thyroidal contributions to adaptive thermogenic mechanisms are impaired in response to both nutritional and environmental challenge, contributing to a greater efficiency of energy metabolism and body fat accretion. Thus, the purpose of the present review is to approximate the qualitative distribution between the two primary factors linked to the physiologic process resulting in the expression of diet induced thermogenesis in a normally lean phenotype of rat, the LA/Ntul//-cp.
Successful allogeneic hematopoietic stem cell transplantation in a child with transfusion-dependent pyridoxine refractory hereditary sideroblastic anaemia
Authors: Rostami Tahereh , Kiumarsi Azadeh , Abbas Hedayati Asl Amir , Sadat Hoseini, Ashraf , Mousavi Asadollah
Published: March 2023

We report a case of pyridoxine refractory, hereditary sideroblastic anaemia (HSA) in a 23 months old girl who underwent bone marrow stem cell transplantation (BMSCT) from his 28-year-old HLA‐identical maternal uncle. By using short tandem repeat polymorphism, 95% donor cells were observed in peripheral blood on day +15, +30, +90 and until the present time; the patient did not develop any significant graft‐versus‐host disease or other transplant complications. One year after transplantation, the patient has a Lansky score1 of 100, with a normal cell blood count (CBC).
Doxorubicin delivery via novel lyophilized/reconstituted platelet-product has anti-cancer activity
Authors: Wright Adrienne , Yi Zheng Ying , Lee Amber , Ishler Braden , A Sheik Daniel , A Moskowitz Keith , L Weiss Mark
Published: March 2023

Background: Cancer is a global health concern with millions of people diagnosed annually. Chemotherapy remains the primary treatment for many cancers despite its toxic side effects. Currently, there is focus on developing nanoparticle systems to enhance the specificity and efficiency of chemotherapeutics. Biological drug delivery methods, e.g., platelets, offer advantages compared to traditional, synthetic nanoparticles and may enhance therapeutic potency by avoiding immune interactions. Platelets are a potential source of biological nanoparticles for drug delivery but, their short shelf-life limits their therapeutic potential. Lyophilization has been used to increase the shelf-life and stability of platelets. Methods: Here, we evaluate a modified version of Cellphire’s proprietary freeze-dried platelet product loaded with the cytotoxic drug, doxorubicin, for delivery to hemangiosarcoma cells. Results: We demonstrate that 1-10% volume/volume (v/v) addition of doxorubicin-loaded Lyophilized Human Platelets (DOX-LHP) to hemangiosarcoma cultures have potent anti-cancer activity by inhibiting proliferation, metabolism, and promoting apoptosis. Further, hemangiosarcoma cells exposed to 5% and 10% v/v DOX-LHP contained 2.2x and 4x more intracellular doxorubicin compared to cells treated with media containing 5 µM free doxorubicin. Conclusions: These results suggest that lyophilized, DOX-LHP overcome the storage limitations of platelets and once reconstituted they function as effective drug delivery vehicles for cytotoxic compounds.
Targeting P-selectin ligands: ushering in a new treatment paradigm for Sickle Cell Disease
Authors: Abdullah Saad Dr. Ashraf
Published: March 2023

Sickle cell disease (SCD) is a debilitating systemic disease with limited treatment options for disease-related complications. Microvascular vaso-occlusion is the hallmark of the disease with profound morbidity and increased mortality. Vaso-occlusion underlies intricate pattern of complications related to hyper-adhesiveness of circulating blood cells and endothelium. Over-expression of P-selectin is central to initiation of the vaso-occlusive cascade by downstream engagement of multiple adhesion receptor/ligand pairs. Blocking P-selectin has been shown to effectively prevent vaso-occlusion by blocking these adhesive interactions. However, the model of the E-selectin inhibitor uproleselan in acute myeloid leukemia (AML) should instigate the development of similar agents that target selectin-ligand adhesive interactions in order to attenuate the clinical effects of vaso-occlusion. Interestingly, the sialylated and fucosylated tetrasaccharide sialyl Lewis(X) (sLeX) was found to be the glycan (carbohydrate) determinant for selectin binding. Therefore, novel synthetic lectins that target glycan determinants on P-selectin-ligands could prove more precise and efficient drugs, not only for prevention, but also for treating patients with vaso-occlusion crises (VOCs).
Mesenchymal stem cell therapy for autoimmune diseases: future Perspectives
Authors: Pennesi Giuseppina
Published: March 2023

Mesenchymal Stem Cells (MSC) transplanted into a recipient organism for therapeutic purposes exert their action not only by cell-to-cell contact, but also by secreting soluble factors. Since biological issues and regulatory constrains hamper the use of MSC for clinical purposes, novel approaches should be attempted. In the last years, the feasibility of using MSC-derived micro vesicles as potential mediators carrying tolerogenic molecules has been tested in pre-clinical modes of autoimmune diseases.
The utility and validity of immunological, inflammatory, and nutritional-based scores and indices in active Pulmonary Tuberculosis
Authors: Fayed Hanan Mahmoud , Mohammed Abdallah Elaiw , Badawy Mohamed Shahat , Yassin Ayman Sabry
Published: March 2023

Purpose: The host immune/inflammatory cells play an important role in Mycobacterium tuberculosis (TB) evolution. We aimed to validate the utility of immunological, inflammatory, and nutritional-based indices in active pulmonary TB (APTB). Patients and methods: fifty PTB patients with fifty healthy subjects were included. Sputum examined for acid-fast bacilli and peripheral blood samples collected to assess inflammatory indices as [neutrophil-lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR), lymphocyte-monocyte ratio (LMR), neutrophil-platelet score (NPS), body mass index (BMI), ESR, C-reactive protein (CRP) and/or albumin-based as advanced lung cancer inflammation index (ALI), prognostic nutritional index (PNI). Results: Patients had a significantly lower BMI, Hb, lymphocyte, MPV, WBC/MPV, MLR, LMR, albumin, PNI, ALI, (P =0.00001) and significantly higher neutrophil, monocyte, RDW, NLR, PLR, ESR, CRP (P =0.00001). The increase in mycobacterial load significantly associated with decreased BMI, albumin, PNI, ALI and increased ESR, neutrophil count, CRP, CRP/albumin ratio, GPS, mGPS, and PLR. ROC curve analysis revealed that ESR, RDW, BMI, MLR, ALI, Hb, MPV, monocyte, NLR, PLR, albumin, and lymphocyte, had great decision power that could differentiate APTB patients from controls. The best cutoff value MPV (8.08 fL), albumin (3.99 g/dl), BMI (23.67 kg/m2), Hb (12.3 g/dl), and lymphocyte (2600×109/l) RDW (14.8%), monocyte (550×109/l), and ALI (53%) (P =0.0001). Regression analysis approved that MPV, albumin level; BMI, Hb, lymphocyte, and ALI had the highest odds ratio as the prognostic value of APTB Conclusion: the immunological, inflammatory, and nutritional-based scores are valuable prognostic tools that reflect the degree of host inflammatory activity that promotes disease progression.
Bilateral testicular micro lithiasis in pediatrics secondary to testicular trauma
Authors: Cruz Gerardo Lopez , Lopez Dias Alejandra Vianey , Gomez Ulises Reyes , Hernandez Katy Lizeth Reyes , Mesinas Dania Juárez , Herandez Armando Quero , Pacheco Barete Carlos Francisco , Garcia Jesus Rodriguez
Published: March 2023

Introduction: Testicular micro lithiasis is defined as the presence of five or more testicular microcalcifications in a single ultrasound image. The clinical meaning is still unknown. It has been associated with: cryptorchidism, testicular torsion, varicocele, gonadal dysgenesis or chromosomal disorders such as Klinefelter syndrome, Down syndrome, McCune-Albright syndrome and Peuzt-Jeghers syndrome, which may be associated with testicular deterioration and infertility. Clinical case: A male patient of 10years. I present testicular trauma at the age of 5years 2months. With peri testicular hematoma, peri testicular and scrotal hematoma drainage was performed without incident. Its evolution was adequate and it was withdrawn at 48 hours after surgery. Five years after the surgery, he refers to inguinoscrotal pain. Physical examination revealed: testicular atrophy and mild hydrocele. Bilateral testicular ultrasound was performed. With the following findings: testicular micro-lithiasis in the parenchyma of both testicles. Discussion: In 2010, a meta-analysis did not report a causal link between testicular micro lithiasis and cancer in the absence of additional risk factors. Conclusion: There is not enough evidence in the current literature to support any clinical surveillance regimen in patients with testicular micro lithiasis. Self-examination is the most important factor in the early detection of testicular malignancy. Keywords: testicular micro lithiasis, testicular cáncer, microlithiasis
Analysis of various strategies for effective household energy conservation
Authors: Arulmurugan R
Published: March 2023

The purpose of this article is to analysis various strategies for effective household energy conservation improvement because day by day energy scarcity increases one of third largest consumer is domestic consumer. The power wastage from the domestic consumer is increases abruptly. In this article deals what are different strategies uses to effectively utilize energy conservation for household applications. In the exciting various awareness programme provided by government even-though the power losses are never drop down. The drawback of these due to malfunctions of the equipment. In the proposed article various methods and strategies suggest to reduce the power consumption. The merits of the proposed system is the investment cost is too low, in particular point the investment cost is zero. The outcome of the proposed system helps the public to reduce the power loss and save the nations.
Palindromic, periodic and Möbius Rubik’s snakes
Authors: Hou Songming , Su Jianning , Chen Yu
Published: March 2023

A Rubik’s Snake is an interesting toy which can be thought as a serial chain with applications in the construction of reconfigurable modular robots. In this paper, we present some theorems related to a Rubik’s snake with palindromic, periodic and Möbius properties. Examples are given for shape design using such properties.
Optimization of distance between fire stations: effects of fire ignition probabilities, fire engine speed and road limitations, property values and weather conditions
Authors: Lohmander Peter
Published: March 2023

A general spatial fire brigade unit network density optimization problem has been solved. The distance to a particular road, from a fire station, is approximated as a continuous variable. It is proved, via integral convolution, that the probability density function of the total travel time, PDFT, is triangular. The size of the fire, when it stopped, is a function of the time it takes until the fire brigade reaches the fire location. An explicit continuous function for the expected total cost per square kilometer, based on the cost per fire station, the PDFT, the exponential fire cost function parameters, the distance between fire stations, and the speed of fire engines, is derived. It is proved that the optimal distance between fire brigade unit positions, OFD, which minimizes the total expected cost, is unique. Then, the OFDs are replaced by integers, OFDIs, for different parameter assumptions. In this process, also the optimal expected total costs are determined. It is proved that the OFD is a strictly decreasing function of the expected number of fires per area unit, a strictly increasing function of the speed of the fire engines, a strictly decreasing function of the parameters of the exponential fire cost function, and a strictly increasing function of the cost per fire station. These effects of parameter changes are also illustrated via graphs in the numerical section.
Design and implementation of smart voice assistant and recognizing academic words
Authors: Abougarair Ahmed J , Aburakhis Mohamed KI , Zaroug Mohamed O
Published: March 2023

This paper approaches the use of a Virtual Assistant using neural networks for recognition of commonly used words. The main purpose is to facilitate the users’ daily lives by sensing the voice and interpreting it into action. Alice, which is the name of the assistant, is implemented based on four main techniques: Hot word detection, Voice to Text conversion, Intent recognition, and Text to Voice conversion. Linux is the operating system of choice, for developing and running the assistant because it is in the public domain, also, Linux has been implemented on most Single-board computers. Python is chosen as a development language due to its capabilities and compatibility with various APIs and libraries, which are deemed necessary for the project. The virtual assistant will be required to communicate with IoT devices. In addition, a speech recognition system is created in order to recognize the significant technical words. An artificial neural network (ANN) with different structure networks and training algorithms is utilized in conjunction with the Mel Frequency Cepstral Coefficient (MFCC) feature extraction technique to increase the identification rate effectively and find the optimal performance. For training purposes, the Levenberg-Marquardt (LM) and BGFS Quasi-Newton Resilient Backpropagation are compared using 10 MFCC, utilizing from 10 to 50 neurons increasing in increments of 10 similarly for 13MFCC the training is done utilizing from between 10 to 50 neurons.
Physics and mathematical model for boomerang flight
Authors: Usubamatov Ryspek
Published: March 2023

The boomerang flight is presented in the known publications by the action of aerodynamic forces and gyroscopic precession torque. This solution does not give a true answer because gyroscopic effects are expressed by the action of the eight interrelated inertial torques generated by the rotating objects. The publications with numerical modeling do not describe the physics of the boomerang flight. Today, the solution of this problem is presented by the mathematical model with the action of the lift forces and inertial torques generated by the rotating boomerang. The boomerang flight is described by the methods of theories of aerodynamics and gyroscopic effects that express the kinetic energy of the boomerang motion and rotation. The mathematical model for the boomerang flight contains multifunctional and interrelated expressions of two theories, which manual solution is sophisticated, but solved by computer software without numerical modeling. The analytical solution for the boomerang flight describes its physics and presents a good example for the educational process of engineering mechanics and aerodynamics.
Comparison between FLC and PID controller for speed control of DC motor
Authors: Abdel-Salam Abdel-Azim S
Published: March 2023

The conventional PID controller is very good when all parameters of the system are Known, that’s mean the system is linear, but when the system is nonlinear because of the friction, the saturation, the disturbance, or the load the dynamic model of the system will be the change, in this case, the conventional PID controller is not good, therefore we used the FLC because it is considered as intelligent controller and it is very suitable when parameter changed or not known, FLC does not need to now the all dynamic model of the system, that’s mean FLC is good with nonlinear system. In this paper, we presented the modeling of DC Motor, and how to compute the full dynamic model of DC Motor, after that we built a subsystem for DC Motor using MATLAB / Simulink, then we applied the PID controller and fuzzy logic controller for controlling the speed of DC Motor, the parameters of PID controller proportional (P), integral (I), derivative (D), tuned by using PID tuning tool in Simulink, we designed FLC for speed control, then we compared the simulation results between PID and FLC, in characteristics rise time, settling time, steady-state error and overshoot. From the simulation results and table compared we found that the performance of FLC is better than the performance of the PID controller in terms of speed control in case of no disturbance or load and with disturbance or load.
Designing paths for box shapes using a Rubik’s Snake
Authors: Hou Songming
Published: March 2023

A Rubik’s Snake is a toy that was invented over 40 years ago together with the more famous Rubik’s Cube. It starts with a straight ruler and could be twisted into many interesting shapes. One important type of shapes is a box shape. Many complicated shapes can be constructed as a combination of box shapes. Therefore it is a fundamental problem to study the box shape. We constructed a path for a general box shape and derived a counting formula. Some other properties and application were also discussed.
Real time traffic sign detection and recognition for autonomous vehicle
Authors: Abougarair Ahmed J , Elmaryul Mohammed , Aburakhis Mohamed KI
Published: March 2023

The advancement of technology has made it possible for modern cars to utilize an increasing number of processing systems. Many methods have been developed recently to detect traffic signs using image processing algorithms. This study deals with an experiment to build a CNN model which can classify traffic signs in real-time effectively using OpenCV. The experimentation method involves building a CNN model based on a modified LeNet architecture with four convolutional layers, two max-pooling layers and two dense layers. The model is trained and tested with the German Traffic Sign Recognition Benchmark (GTSRB) dataset. Parameter tuning with different combinations of learning rate and epochs is done to improve the model’s performance. Later, this model is used to classify the images introduced to the camera in real- time. The graphs depicting the accuracy and loss of the model before and after parameter tuning are presented. Also, an experiment was performed to classify the traffic sign image introduced to the camera by using the CNN model. A high probability score is achieved during the process.
Digital twin of ABB IRB-120 robotic cell based on the industry 4.0
Authors: Pereira Vitalli Rogério Adas , Rosário João Mauricio
Published: March 2023

The evolution of virtual commissioning has enabled significant advances in analysis, safety testing, programming and failure anticipation in projects involving industrial robots. To make this possible, a virtual model equal to the real one is needed and our research objective is to develop the Digital Twin of the ABB IRB-120 process and robot to digitally validate the robotic cell and minimize installation and project implementation time in the “shop floor” in the context of I4 .0 Currently, a major problem related to Virtual Commissioning activities is the lack of precision between the virtual model and the physical model (digital twin), due to difficulties related to mechanical fabrication after model generation 3D The use of the Process Simulate software (SIEMENS PLM), allowed more accurate and real results to commission the robotic cell of the Robotics Advanced Institute - I.A.R. The main analysis tools are shown in this study.
Adaptive control of AUV trajectory tracking in the presence of disturbance
Authors: Jalalnezhada Mostafa
Published: March 2023

In the method used in this article, the control objectives are achieved by using the adaptive controller and based on the first-order sliding mode method, assuming that the disturbance and its derivative are bounded with an indeterminate boundary, in a way that is resistant to uncertainty and disturbance caused by ocean waves. be This method is based on the law of two-layer adaptation, which works without the need of knowledge of the boundary values of disturbance and its derivative. The stability of the proposed robust-adaptive control law is proved using Lyapunov theory and the performance of the designed controller is verified using simulation results. The performance of the proposed controller is evaluated in terms of error and control effort by comparing the simulation results of the proposed control and conventional sliding mode control. According to the results of comparison and investigation in different disturbance scenarios, the tracking error in the proposed control is much less than the tracking error of the conventional sliding mode control, and also, the range of control effort in the conventional sliding mode control is greater and is associated with chattering, if it is in the case of the robust control. - Charting’s proposed adaptation is not observed.
Smart glove for sign language translation
Authors: Abougarair Ahmed J
Published: March 2023

The development of a wearable device-based sign language translator is discussed in this study. It can translate sign language into both speech and text. The glove-based gadget can read the motions of one arm and five fingers. The system consists of an accelerometer and five flex sensors to measure finger bending and arm motions, respectively. Based on the interaction of these sensors, the gadget can recognize specific motions that in American Sign Language (ASL) correspond to the alphabet and convert them into speech and text using a mobile phone application. The hardware design of the device is mostly explained in this publication. The gadget displayed an average value of 0.6 s to translate a sign language into speech and text based on early trial results on six simple sign languages, demonstrating the applicability of the suggested device.
World’s first self-driving amphibious bus
Authors: Watabe Daishi , Wada Masayoshi , Shimizu Nobumitu , Ohkubo Tastuma
Published: March 2023

Amphibious buses are extensively used worldwide for transporting people to and from tourist attractions across water and land. Although numerous studies on self-driving technologies have been reported, research on the automatic operation and navigation of an amphibious vehicle has been sparse; moreover, owing to the size of the amphibious vehicles, automatic transport of multiple people is not possible. Therefore, in this study, we attempted to realize unmanned operation of a sightseeing amphibious bus for 45 passengers. The bus was outfitted with a by-wire system. On the vessel side, an actuator, similar to that used in JOY cars, was installed to turn the captain’s steering wheel. We also developed a software for the automatic operation and navigation of the bus. The relationship between the car’s steering-wheel angle and the front-tire angles is linear, whereas that between the captain’s steering-wheel angle and the vessel’s rudder-plate angle is not (and was approximated with a sixth-order polynomial). Furthermore, Autoware—a leading autonomous-driving software utilizing model-based predictive control algorithms to control the steering wheel of automobiles—was employed in this work. These algorithms were altered using Nomoto’s KT vessel model equation to improve the accuracy of vessel-path tracking. To the best of our knowledge, till date, no studies have documented the functioning of self-driving vessels using predictive controls based on Nomoto’s KT vessel model equation. In accordance with the vessel navigation rules based on the Autoware obstacle avoidance logic, LiDAR, cameras, and sonars were employed to detect obstructions and give-way paths. Thus, we successfully demonstrated the working of world's first self-driving amphibious bus, with automated controls for entering/exiting water and during give-way operations.
On the methods of analytical mechanics for mathematical modeling of the dynamics of non-free systems and some variants of their application to the dynamics of parallel manipulators
Authors: Krasinskiy Aleksandr Ya
Published: March 2023

The level of development of actuator technology and the element base and software of control loops of modern automatic devices makes it possible to use in technical practice complex control algorithms based on the results of mathematical control theory, including with incomplete information about the state. The effectiveness of such algorithms is determined by the presence of an adequate mathematical model of the device under study. For such a widespread class of automatic devices as manipulators with parallel kinematics, the problem of developing methods for creating mathematical models that allow taking into account nonlinear effects, despite the efforts of numerous researchers, remains relevant. To a large extent, the complexity of modeling the dynamics of this class of automatic devices is associated with the presence of parallel kinematic chains, which leads to the need to apply the results of analytical mechanics of non-free systems. In this section of theoretical mechanics, several rigorous methods have been developed, as a result of which mathematical models of different dimensions are obtained with different levels of complexity of the algorithms for their derivation and study. This leads to the need for a critical analysis of both the methods themselves and their possible application in technical practice. In this paper, the main algorithms for obtaining mathematical models of the dynamics of systems with geometric constraints are presented in detail and some comparative analysis of their application to modeling the dynamics of manipulators with parallel kinematics is carried out.
Analysis of the June 2021 winter storm in Victoria with a catastrophic loss of large trees and major flooding
Authors: Callaghan Jeff
Published: March 2023

An extreme weather event which occurred in June 2021 stretched the rescue operations of Victorian Emergency Services due to major flooding and the unprecedented number of fallen large trees. The mechanisms which produced severe convection with gusts strong enough to bring down thousands of trees also produced the heaviest rainfall. The blocked roads and access to fallen power lines resulted in power outages lasting three weeks in some areas and some people were trapped in their houses for up to a week. The atmosphere around Melbourne was characterized by very strong vertical wind shear however convection was confined to mountainous areas southeast, east, and northwest of Melbourne. Overall, the region around Melbourne was in a stable atmosphere and convection was released by strong orographic lifting. Some of the heaviest rain fell on the Strzelecki Ranges and this drained into the city of Traralgon where near-record floods were reported. The event is compared with a Melbourne event in 2020 which caused three fatalities from fallen trees in the afternoon peak period. The fatalities were restricted with the current event due to it occurring just before and after midnight.
Advances in professionally applied topical fluoride in prevention of dental caries: a narrative review
Authors: Avasthi Avijit , Gupta Srishti
Published: March 2023

Fluoride is a double-edged sword. The early optimum exposure during formative years yields preventive effect, however exposure beyond permissible level may exhibit discrete pitting to corroded appearance of enamel. The above review highlighted the advancements in fluoride administered topically. A critical appraisal was done of the latest findings related to the use of topical fluorides by probing through databases such as PUBMED, EBSCO and SCOPUS. Thus fluoride delivered topically should be advocated for prevention of dental caries.