bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparison of the Effects of Conventional Heat Treatments on Cast and Selective Laser Melted IN939 Alloy
Authors: Philpott W. , Jepson M. A. E. , Thomson R. C.
Published: March 2024

Additive manufacturing (AM) is a process where, as the name suggests, material is added during production, in contrast to techniques such as machining, where material is removed. With metals, AM processes involve localised melting of a powder or wire in specific locations to produce a part, layer by layer. AM techniques have recently been applied to the repair of gas turbine blades. These components are often produced from nickel-based superalloys, a group of materials which possess excellent mechanical properties at high temperatures. However, although the microstructural and mechanical property evolution during the high temperature exposure of conventionally produced superalloy materials is reasonably well understood, the effects of prolonged high temperature exposure on AM material are less well known. This research is concerned with the microstructures of components produced using AM techniques and an examination of the effect of subsequent high temperature exposures. In particular, the paper will focus on the differences between cast and SLM IN939 as a function of heat treatment and subsequent ageing, including differences in grain structure and precipitate size, distribution and morphology, quantified using advanced electron microscopy techniques.
Evaluating The Effect of Cold Work on Supercritical Oxidation of Boiler Tube Materials
Authors: Yli-Olli Sanni , Tuurna Satu , Auerkari Pertti , Penttilä Sami
Published: March 2024

For higher efficiency and competitive overall performance, it would be an advantage to be able to safely exceed the highest operational values, currently up to about 600-620°C/25-30 MPa in supercritical (SC) boiler plants. Under such operating conditions the oxidation resistance in SC water tends to limit the potential for further improvement of efficiency. The way to increase the oxidation resistance of traditional austenitic boiler tubes e.g. TP 347H is to do additional cold work on the boiler tube inner surface. In the current paper the effect of cold work on the oxidation resistance of TP347H and TP347HFG has been evaluated by shot peened samples with different parameters and subjecting those samples to supercritical oxidation exposure. The results show an improvement in the oxidation resistance of the alloys, especially in the large grained alloy TP347H. Also the uniformity of the deformation layer was seen to have an influence on the oxidation resistance, since the oxide nodules start to grow at locations with the thinnest or no deformation layer.
Tenaris New High Steam Oxidation Resistant, Creep Strength Enhanced Ferritic Steel Thor 115
Authors: Minami Y. , Yamamoto Y. , Ortolani M. , Mariani P. , Pint B.
Published: March 2024

A new martensitic steel for power generation applications was developed: Tenaris High Oxidation Resistance (Thor) is an evolution of the popular ASTM grade 91, offering improved steam oxidation resistance and better long-term microstructural stability, with equal or better creep strength. Thanks to its design philosophy, based on consolidated metallurgical knowledge of microstructural evolution mechanisms, and an extensive development performed in the last decade, Thor was engineered to overcome limitations in the use of ASTM grade 91, above 600 °C, particularly related to scale growth and liftoff. After laboratory development, Thor was successfully validated at the industrial level. Several heats up to 80 metric tons were cast at the steel shop, hot rolled to tubes of various dimensions, and heat treated. Trial heats underwent extensive characterization, including deep microstructural examination, mechanical testing in the as-received condition and after ageing, long-term creep and steam oxidation testing. This paper presents an overview of metallurgical characterization performed on laboratory and industrial Thor material, including microstructural examination and mechanical testing in time-independent and time-dependent regimes. Data relevant to the behavior and the performance of Thor steel are also included.
Manufacturing Experience of Thor 115 Components
Authors: Mariani P. , Fullin L. , Marinari A. , Ortolani M. , Baietta S.
Published: March 2024

A new martensitic steel for power generation applications was developed: Tenaris High Oxidation Resistance (Thor) is an evolution of the popular ASME grade 91, offering improved steam oxidation resistance and better long-term microstructural stability, with equal or better creep strength. Thanks to its design philosophy, based on consolidated metallurgical knowledge of microstructural evolution mechanisms, and an extensive development performed in the last decade, Thor was engineered to overcome limitations in the use of ASME grade 91, yet allow being processed in the same fashion, permitting the re-use of consolidated best practices for boiler fabrication. In order to evaluate the possibility to produce complete pressure part systems, various tests to manufacture components have been performed on Thor pipes and tubes (i.e. finning, bending, welding) and on Thor forged material (i.e. flanges). In all cases consolidated industrial best practices used on ASME grade 91 were applied, and resulting properties met ASME requirements.
On the Corrosive Behavior of Nickel-Based Superalloys for Turbine Engines: Cyclic Oxidation and Its Impact on Crack Propagation
Authors: Kraemer Karl Michael , Woellmann Lorenz , Mueller Falk , Oechsner Matthias
Published: March 2024

Cast nickel-based superalloys used as structural materials for gas turbine parts need to withstand high temperatures and dynamic mechanical loads. When in contact with ambient air, the formation of protective oxide scales causes a depletion of γ’-precipitates in the surface-near region and leaves a weakened microstructure. This environmentally based degradation of the material might be accelerated under cyclic thermal exposure. In this paper, the cyclic oxidation behavior of two cast nickel-based superalloys and one single crystalline variant are investigated: C1023, CM-247 LC and M-247 SX. Exposure tests were carried out under both isothermal and cyclic conditions in air at 850 °C, 950 °C and 1050 °C for times up to 120 h to investigate the impact of thermal cycling. The differences in oxidation mechanisms are analyzed phenomenologically via light and electron microscopy and brought in correlation with the oxidation kinetics, determined based on net mass change and depletion zone growth. An assessment of the impact of precipitation loss on local mechanical strength is attempted via nano-indentation method. The found relations can be transferred onto an acceleration of crack growth under creep-fatigue and thermo-mechanical fatigue conditions.
TRACING THE ANTIBACTERIAL, ANTIFUNGAL AND ANTI-BIOFILM ACTIVITIES OF ROOT EXTRACT BAJAKAH TAMPALA (SPATHOLOBUS LITTORALIS HASSK)
Authors: Setyowati Endang , Irzani Elza Fadia , Mochtar Luthfi Chaerul Fadly , Hamzah Hasyrul
Published: March 2024

Biofilm is a common causative factor for urinary tract infections due to catheter usage with a percentage of infection around 70-80%. The Bajakah tampala (Spatholobus littoralis Hassk) is one of native plants of Kalimantan which contains phenolic compounds, flavonoids and tannins which are proven to accelerate wound healing, have antibacterial activity, and have very high and strong antioxidant activity. This study aims to determine the antibacterial and anti-biofilm activity of bajakah root extract (Spatholobus littoralis Hassk)  on catheter colonies of Staphylococcus aureus, Escherichia coli and Candida albicans and to determine their mechanism of action in vitro. This research is carried out with an in vitro experimental study design using a microplate reader. Extraction was carried out by maceration method using 96% ethanol solvent. The results showed that the ethanol extract of Bajakah tampala (Spatholobus littoralis Hassk) had antibacterial activity against S. aureus with a concentration of 1% w/v of 88.33% ± 0.01 and anti-biofilm activity of 82.21% ± 0.01. E. Coli bacteria had an antibacterial activity of 84.83% and an anti-biofilm activity of 80.11 at a concentration of 1% w/v. C. albicans had an antifungal activity at a concentration of 1% w/v of 82.31% ± 0.01 and anti-biofilm activity of 77.00% ± 0.01. From these results it can be concluded that the ethanol extract of Bajakah tampala (Spatholobus littoralis Hassk) has antibacterial and antifungal activities and the potential as a new anti-biofilm agent against S.aureus, E. coli and C. albicans
CLINICOMORPHOLOGICAL FEATURES, DIAGNOSTIC AND TREATMENT OF CYSTS OF THE MINOR SALIVARY GLANDS
Authors: Chernets V.S. , Chumakova Y.G.
Published: March 2024

Small salivary gland cysts occupy a large percentage in the structure of oral cavity diseases in children and adults.

The aim of the study is to determine the main diagnostic criteria and treatment tactics for patients with small salivary gland cysts.

Materials and methods. 5 adult patients aged from 21 to 50 years and 2 children aged from 3 and 16 years were examined and surgical removal of small salivary gland cysts was performed. Pathohistologic studies of biopsy material were performed.

Results obtained. Women (85.7%) prevail among the patients with cysts of the minor salivary gland. The average age of the patients was 27,0±6,1 years. The most frequent localization of small salivary gland cysts was the mucous membrane of the lower lip (85,7%). In 5 patients it was confirmed that the cause of cyst formation was mechanical trauma, namely biting or bruising of the lower lip. Clinically, a cyst of the minor salivary gland was a single oval or rounded mass with a size ranging from 0.4 to 1.1 cm. The average size of the cyst was 0.69±0.08 cm in diameter.

According to the results of the pathohistological examination, the extravasation type of cyst of the minor salivary gland was determined in 3 patients, the retention cyst was also determined in 3 patients on the lower lip. A superficial extravasation cyst has been diagnosed on a soft palate in a woman aged 50 years old.

In 3 patients, cystectomy was carried out in a traditional surgical method, in 4 patients with the use of a high-intensity diode laser. Hyaluronic acid gel hyaDENT BG was used to accelerate wound healing after laser ablation.

Conclusion. Based on literature analysis and own clinical observations, the main etiological factors and clinical-morphological signs of various clinical variants of cysts of the minor salivary glands were determined. It is shown that only the mucous retention cyst is a true cyst, because it histologically has an internal epithelial lining.
STATE OF PERIODONTAL TISSUES IN CHILDREN LIVING IN EDUCATIONAL AND REHABILITATION CENTERS
Authors: Chukhray N.L. , Danylyuk D.V.
Published: March 2024

Assessment of periodontal tissues state in children from educational and rehabilitation centers aimed at further monitoring and development of therapeutic and preventive measures is an urgent task of modern dentistry.

The purpose of the study was to determine the periodontal tissues state in children from educational and rehabilitation centers (ERC).

Research material and methods: 182 children aged 7 to 15 from communal institutions of the Lviv Re-

gional Council (CI LRC) and 165 children of the same age from the secondary schools (comparison group) have been examined. The periodontal tissues state was assessed on the basis of clinical examination, the Schiller-Pysarev’s test and the Papillary-Marginal-Alveolar index (PMA) (Parma, 1960).

Research results and their discussion: It was established that chronic catarrhal gingivitis was found in the average of 71,68±4,25% of children aged 7-15 years from the ERC, which is significantly higher than the children of the comparison group – 46,75±3,51% (р<0,001). With age, the prevalence of CCG increases and in the age group of 10-12 years, accounting on average for 81,53±7,28%, which is by 1,7 times higher than in children of the comparison group (р<0,001). In children aged 13-15 years, the frequency of CCG is by 1,4 times higher than that in children of the comparison group and by 1,2 times higher than that of children aged 7-9 years.

The analysis of the results shows that in all age groups, the children from the ERC have a mild degree of CCG and, on average, accounted for 57,83±7,28%, which is by 1,4 times lower that in the comparison group (79,76±3,79%), and the average degree of CCG is much higher – 37,89±3,68%, respectively, in children of the comparison group (18,79±3,45% (р1<0,001, р2<0,001)). The significant prevalence of a severe degree of chronic catarrhal gingivitis in children of 7-9 years old from ERC (8,33±3,25%) is revealed.

Therefore, the findings of the study indicate a significant prevalence of inflammatory processes in the periodontal tissues of children from ERC, which must be taken into account in providing of dental care for children who are in such institutions, and should be actively implemented in treatment and prophylaxis measures to prevent the further development of pathological processes in periodontal tissues.
Critical period of a star in the scenario of accretion-driven spin-up
Authors:   The Central Astronomical Observatory of the RAS at Pulkovo,   The Institute of Applied Astronomy of the RAS, Ikhsanov N.R. , Beskrovnaya N.G. ,   The Central Astronomical Observatory of the RAS at Pulkovo
Published: March 2024

We consider the accretion-driven spin-up of a magnetized degenerate star in a close binary system under different assumptions about the accretion scenario. We have estimated the minimum possible spin period which the star can achieve in the course of such spin-up. We show that the star can achieve the minimum possible value of the spin period if the interchange instabilities of its magnetospheric boundary are suppressed.
İKİ BOYUTLU KESME PROBLEMİ İÇİN YENİ KARMA TAMSAYILI DOĞRUSAL PROGRAMLAMA MODELLERİ
Authors: Tutumlu Büşra , Tunçer Gülüm , Saraç Tuğba
Published: March 2024

Bu çalışma, iki boyutlu kesme problemlerinin çözümü için yeni karma tamsayılı doğrusal matematiksel modeller (M1 ve M2) önermektedir. M1 modeli, literatürdeki model ile kıyaslanırken, M2 modeli parçaların 90 derece döndürülmesine izin vererek ek esneklik sunmaktadır. Bu çalışmada, önerilen modellerin performansı, literatürden alınan ve en iyi çözümleri bilinen test problemleri kullanılarak değerlendirilmektedir. Ayrıca, çalışma bir gerçek hayat uygulaması da içermektedir. Bu kapsamda lokomotif ve motor üretimi yapan bir fabrikanın vagon atölyesindeki 16 ve 25 parçalı kesme problemleri önerilen modellerle çözülmüş ve sonuçlar işletmenin mevcut çözümü ile karşılaştırılmıştır. Sonuç olarak, 16 parçalı kesme probleminde M1 ve M2 modelleri sırasıyla %1,32 ve %2,32 oranında iyileşme sağlamıştır. 25 parçalı kesme probleminde ise, M1 modeli %1,59 ve M2 modeli %8,78 oranında iyileşme elde edilmiştir. Bu sonuçlar, önerilen modellerin kesme problemlerini çözmekte etkili olduğunu ve mevcut yöntemlere göre daha iyi sonuçlar elde ettiğini göstermektedir. Bu çalışma, kesme problemlerinin çözümünde yeni ve etkili yöntemler sunarak, malzeme kullanımını optimize etmeye ve israfı azaltmaya yardımcı olabilecek potansiyel katkıları ile sürdürülebilir üretim uygulamalarına da katkı sağlamaktadır.
DOLGU BARAJ GRANÜLER ZEMİNLERİNDE İÇSEL STABİLİTE POTANSİYELİNİN DEĞERLENDİRİLMESİ
Authors: Topçu Sadettin , Seyrek Evren
Published: March 2024

Dolgu barajların uzun dönemli güvenliği, sızma akımının gerçekleştiği zeminlerin içsel stabilitesine bağlıdır. Sufüzyon/sufozyon, kohezyonsuz zeminlerde görece ince malzemelerin, iri malzemelerin arasındaki boşluklardan sızma akımıyla taşınması olarak tanımlanır. Sufüzyon/sufozyon mekanizmasına bağlı olarak gerçekleşen içsel stabilite bozulmasıyla, granüler filtrelerde geriye doğru erozyon(borulanma) veya boşluk suyu basıncındaki artışa bağlı olarak statik stabilite kaybı gözlemlenebilir. Sufüzyonun gerçekleşebilmesi için iki koşul vardır: Sızma akımının yeterli hidrolik eğime sahip olması ve malzemenin granülometrisinin danelerin taşınmasına elverişli olması. Granüler filtrelerin tasarım ve planlanmasında sufüzyon mekanizmasının önceden belirlenebilmesi için bazı yaklaşımlar geliştirilmiştir. Bu çalışmada, dane çapı dağılım eğrisini kullanarak içsel stabilite potansiyelini belirleyen Istomina, Kezdi, Kenney ve Lau ile Burenkova metotları karşılaştırılmıştır. Eskişehir ili sınırları içerisinde yer alan Gökpınar Barajı’nın yarı-geçirimli malzeme sahasındaki plastik olmayan zeminler üzerinde yapılan çalışmaya göre, yöntemlerin uygulama esasları birbirine benzedikçe aynı değerlendirme sonucunu bulma oranları artmaktadır.
Criminal Act of Severe Assault by PS Towards M Reviewed Under Law Number 13 of 2006 jo Law Number 31 of 2014 Concerning the Protection of Witnesses and Victims
Authors: Blaviando Edo , Christianto Hwian , Siwu Sonya Claudia
Published: March 2024

This research aims to analyze the Criminal Act of Severe Assault by PS towards M based on Law Number 13 of 2006 jo Law Number 31 of 2014 concerning the Protection of Witnesses and Victims. The research method used is a juridical normative legal research type with a statute and conceptual approach. The primary data source is primary legal materials such as the Criminal Code and the Law on the Protection of Witnesses and Victims. The results of the research indicate the urgency of protecting witnesses and victims of criminal acts in criminal law as an effort to uphold human rights. Protection for victims of severe assault crimes needs to be strengthened through clear and effective regulations to provide a sense of security and justice for the victims. In conclusion, the protection of witnesses and victims of criminal acts is an integral part of the criminal justice system aimed at providing justice, preventing threats, and ensuring the fulfillment of victims' rights. Further efforts are needed to strengthen the protection of victims of criminal acts, including severe assault crimes, in accordance with legal principles and human rights.
Esensi Delik Obstruction of Justice Dalam Konstruksi Hukum Pidana
Authors: Keysha Saradiba , Abduh Rachmad
Published: March 2024

Obstruction of justice is a criminal offense formulated in the Criminal Code to protect the judicial process so that it runs fairly and prevents manipulation. However, law enforcement against obstruction of justice in Indonesia is considered to be still weak due to several obstacles such as unclear article formulations, weak cooperation between related institutions, minimal internal supervision and lack of public understanding. Therefore, various comprehensive improvement efforts are needed both in terms of regulations, coordination between institutions, internal supervision, and public education so that enforcement of obstruction of justice laws can run effectively and optimally in Indonesia.
Kepastian Hukum Pendaftaran Peralihan Hak Atas Tanah Saat Menjadi Objek Sengketa di Pengadilan (Studi Kasus Pelaksanaan Eksekusi terhadap Objek Perkara Perdata No. 18/Pdt.G/2018/PN Kbr)
Authors: Abdi Israr , Mirwati Yulia , Fendri Azmi
Published: March 2024

This research aims to examine and analyze the legal certainty of registering the transfer of land rights when it is the object of a dispute in court and to determine the legal consequences for land rights that have been transferred in the implementation of the Koto Baru District Court Decision No. 18/Pdt.G/2018/PN Kbr. This research uses empirical juridical methods, namely research carried out directly in the field to find out the actual problems that occur, then it will be connected to applicable laws and regulations and existing legal theories. The data collected is in the form of primary data and secondary data. Based on the research results, in the event that Land Rights are the object of a dispute in court, the case registration is automatically deleted within 30 (thirty) days from the date of recording and if there is a status quo order it is also automatically deleted within 30 (thirty) days. day. After the period for recording the object of the court case and/or the record of the object of determining the status quo as intended is deleted and the object of the case is not followed by a determination of collateral confiscation, the registration of the transfer or encumbrance of rights can be carried out. The Court's decision which has permanent legal force (In kracht van gewijsde) is considered correct and in this decision it is punitive (Condemnatoir) control/ownership of the land the object of execution is binding on the third party because obtaining rights to the land from the losing party (Defendant) occurred after If there is a case/case decision then the object of the case can be executed.
Effects of Lacticaseibacillus paracasei 327 intake on the intestinal environment in healthy adult Japanese: a randomized, double-blind, placebo-controlled, parallel-group trial
Authors: Senda-Sugimoto Yoshie , Mihara Toshihiro , Higuchi Yuki , Uchiyama Kimiko , Takara Tsuyoshi , Takahashi Hajime
Published: March 2024

Background: Lacticaseibacillus paracasei 327 (L. paracasei 327) is a lactic acid bacteria isolated from brown rice. It has been reported that sterilized L. paracasei 327 improves bowel movement. Given the reported relationship between intestinal microbiota and bowel movement, we hypothesized that L. paracasei 327 also improves the intestinal environment through its involvement in fluctuations in the composition of the intestinal microbiota.
Objective: The purpose of this study was to verify the effects of the consumption of food containing sterilized L. paracasei 327 on the intestinal environment in healthy Japanese adults.
Methods: A randomized, double-blind, placebo-controlled, parallel-group trial was conducted in 110 healthy adults aged 20 to 64 years with a defecation frequency of three to five times per week. Participants were divided into two groups, one receiving 25 mg (approximately 5x1010 bacteria) of sterile L. paracasei 327 once daily for two weeks (55 participants) and other receiving placebo for two weeks (55 participants), to test its effect on the intestinal environment.
Results: Intestinal microbiota analysis showed that L. paracasei 327 ingestion resulted in a trend towards an increase in Bacteroides and a significant decrease in Clostridium cluster IV in each taxonomic group compared to the placebo group. In addition, for each operational taxonomic units (OTUs), Bacteroides_OTU_469 and Clostridium subcluster XIVa_OTU_754 were significantly increased, and Clostridium cluster IX, Akkermansia_OTU_110 tended to increase, while Clostridium cluster IV_OTU_749 significantly decreased. Furthermore, defecation days and defecation frequency increased significantly.
Conclusion: The presumptive species of bacteria in the taxonomic group and OTUs increased by L. paracasei 327 ingestion included short-chain fatty acid-producing bacteria. In addition, Clostridium cluster IV_OTU_749, which was reduced by L. paracasei 327 ingestion, may also be involved in the production of putrefactive products in the intestine. Therefore, these findings suggest that L. paracasei 327 ingestion improves the intestinal environment by increasing short-chain fatty acid-producing bacteria, suppressing putrefactive-producing bacteria, and improving defecation.
Trial registration: UMIN000049859 (UMIN-CTR)Keywords: Lactic acid bacteria; Postbiotics; Lacticaseibacillus paracasei 327; Intestinal microbiota; Defecation; Clinical trial
Wahlen in Zeiten der Polykrise? Baustellen der Europäischen Union im Europawahljahr 2024
Authors: Ludwig Andreas N.
Published: March 2024

Die Europawahlen 2024 finden in unsicheren Zeiten, unter den Bedingungen einer vermeintlichen Polykrise statt. Der Beitrag beleuchtet zunächst diesen aktuell vielfach diskutierten Begriff, zeigt bestehende Herausforderungen der EU im Wahljahr auf und hinterfragt abschließend diesen Krisendiskurs.
Einwanderungstraumland Kanada? Perspektiven und Impulse für die deutsche Einwanderungs- und Integrationspolitik
Authors: Alm Friederike , Winter Elke
Published: March 2024

In diesem Artikel wird sich mit der Frage befasst, was genau Deutschland von Kanadas Erfahrungen mit Einwanderung und Integration lernen kann. Hierzu werden zunächst Grundzüge der kanadischen Einwanderungs- und Integrationspolitikdargestellt, anschließend werden die Problemlage in Deutschland expliziert. Der Artikel schließt mit einer Analyse, in welchen Politikbereichen Kanada berechtigt als Inspiration für deutsche Einwanderungs- und Integrationspolitik gelten kann.
„Mediengeile Klimakleber oder selbstlose Weltretter?“ Eine Talkshow-Simulation zu den Protesten der Letzten Generation
Authors: Meyer Tom , Weber-Stein Florian
Published: March 2024

Die Auseinandersetzung mit den Forderungen und den Protestformen der „Letzten Generation“ bildet eine zentrale Kontroverse gegenwärtiger Politik. Der Artikel skizziert einen Unterrichtsvorschlag, diesen Konflikt zum Gegenstand einer politikdidaktisch reflektierten unterrichtlichen Auseinandersetzung zu machen. Den Rahmen bildet die Makromethode der Talkshow-Simulation, deren Vorzüge am Beispiel einer praktischen Durchführung in der Sekundarstufe II reflektiert werden.
A novel surgical method for treating fractures of the middle third of the clavicle
Authors: Liu Yayun , Tang Xiaozheng , Ding Yuanjun , Li Jingtang
Published: March 2024

BACKGROUND: The clavicle is recognized as the bone most vulnerable to fractures. Moreover, approximately 80% of fractures occur in the middle third of the clavicle. Conservative treatment is associated with a higher rate of nonunion, while surgical treatment of fracture via internal fixation may have a variety of postoperative complications. Therefore, to improve patient satisfaction and reduce the complications related to internal fixation techniques, we modified the surgical approach to external fixation. OBJECTIVE: The purpose of this study was to assess the modified intervention’s prospects for clinical application. METHODS: A total of 36 patients with middle clavicle fractures were treated with screw–rod external fixation between April 2015 and October 2019. We observed the operative time, intraoperative blood loss, length of hospital stay, and fracture healing time. The patients were followed up regularly, and the clinical efficacy of the modified intervention was evaluated. Finally, the patients’ shoulder function was assessed based on the disabilities of the arm, shoulder, and hand (DASH) score. RESULTS: For the screw–rod external fixation, the mean operative time was found to be 48.6 ± 6.8 min, the intraoperative blood loss was 30.6 ± 17.2 mL, the length of hospital stay was 4.5 ± 1.5 days, and the fracture healing time was 2.8 ± 0.4 months. Eventually, all the patients healed well, with the combined “excellent” and “good” rate of shoulder function being assessed to be as high as 94.44%. Furthermore, the DASH scores were all less than 10, with the average score being 4.65 ± 3.34. CONCLUSIONS: The screw–rod external fixation technique offers the advantages of convenience, reliability, and good aesthetics, suggesting that it could be used as an alternative treatment method for fractures of the middle third of the clavicle.
Mitigating Overtrust Towards Robot in Mixed Reality Interfaces
Authors: He Di , Zhao Changshun , Zhang Kaiyue , Yang Hongrong , Liu Ying
Published: March 2024

This research focuses on the role of trust in human-agent interaction, particularly in the context of home robot systems. The study found that participants were more likely to collaborate when they understood the agent’s intentions. The research involved 36 participants working with an agent across three different interfaces to complete household tasks. The results showed that clear agent intentions can increase cooperation and calibrate trust to an appropriate level.
On the Application of Heuristics of the TSP for the Task of Restoring the DNA Matrix
Authors: Melnikov Boris , Chaikovskii Dmitrii
Published: March 2024

The traveling salesman problem (TSP) is a well-known optimization problem that seeks to find the shortest possible route that visits a set of points and returns to the starting point. In this paper, we apply some heuristics of the TSP for the task of restoring the DNA matrix. This restoration problem is often considered in biocybernetics. For it, we must recover the matrix of distances between DNA sequences, if not all the elements of the matrix under consideration are known at the input. We consider the possibility of using this method on the testing of distance calculation algorithms between a pair of DNA’s to restore the partially filled matrix.
A Novel LED Spherical Visual Display System and Its Image Geometric Correction Method
Authors: Zeng Yixiong , Dai Jianxi , Xu Bo , Qiu Kun
Published: March 2024

Visual display systems have wide-ranging applications in training simulators, serving as comprehensive systems that expand the display field of view by seamlessly combining multiple display units. This paper introduces an innovative spherical display system based on LED technology, designed to achieve close-proximity real-image display within a spherical enclosure. Additionally, we propose a channel division method tailored for this novel LED spherical display to enable efficient display driving. To address geometric distortion issues that arise when rendering flat graphics on a spherical surface, we present a geometric correction method specially designed for LED spherical displays, providing a comprehensive explanation of its theoretical principles and correction process. Experimental results demonstrate that with the implementation of our proposed channel division and geometric correction methods, the number of driving channels for the LED spherical display is reduced, image cropping is minimized, and there is no need for image fusion processing. Corrected images exhibit no distortion, and channel alignment remains continuous without any displacement. This method offers a straightforward operation, requires minimal parameter settings, and is easily implementable, providing a solid foundation for the widespread application of LED spherical vision display systems the future.
Spectrum Modeling Using only RGB Values
Authors: Tian Guangjun , Jin Xuanxu , Wang Huaiyu , Zhang Bo , Ye Suhong , Wang Zhou
Published: March 2024

The most effective approach to achieving color consistency lies in accurate spectrum modeling, and the key to recover a faded spectrum is to recall the chromogenic metamer. In this paper, a spectral modeling mechanism is designed utilizing three primary colors as its core. Spectral recovering has been completed for all of the 1269 Munsell colors with corresponding RGB parameters. With both maximum entropy (ME) and least mean square error (LS) objectives, the mechanism works well with a result of 0.0046 as the average mean square error in the whole Munsell color space. The contribution of our approach not only lies in the accurate conversion from RGB to spectrum, but also in developing a set of color metamers for chromogenic methods of color calibration.
Explainable Legal Judgment Prediction via Concept Tree and Concept Forest Reasoning with Collegiate Bench Mechanism
Authors: Deng Wei , Yang Huan , Ma Lina , Li Wangyue , Wang Guoyin
Published: March 2024

Nowadays artificial intelligence (AI) has been applied in many high-stake decision-making tasks. The black box AI models which are lack of explainability can cause serious problems in practice. In the justice, an explainable model becomes more and more important. Since tree-based machine learning models are explainable, we propose an explainable legal judgment prediction model using concept trees with collegiate bench mechanism in this paper. A concept tree is constructed to check the classification labels predicted by the original multi-classifier. A revising process is designed to deal with the scenario when the results of the original multi-classifier and the concept trees are conflicted. Meanwhile, the concept trees grow into concept forest because of the existence of arbitration classifiers. The judicial judgment process is simulated, which not only makes the good classification performance with collegiate bench mechanism, but also has the model explanation from the features in the conceptual levels. The experiments validate the validity of our model with both better explainability and better accuracy.
An Improved YOLOv7-CO Classroom Behavior Detection Algorithm Combining Coordinate Attention Mechanism and Omni-Dimensional Dynamic Convolution
Authors: Cai Fang , Du Yunyun , Qin Xue
Published: March 2024

This work offers a YOLOv7-CO model for the identification of student classroom behavior to solve the issue of false detection and missed detection caused by challenging extraction of student behavior characteristics and diversity of student behaviors in complicated and packed classroom settings. In the feature extraction part, the Coordinate Attention mechanism is introduced, so that the model can focus on the extraction of target information when extracting features and improve the accuracy of detection. And the Omni-dimensional Dynamic Convolution is introduced to neck of the model to enhance the network’s extraction and fusion of diverse features to improve the accuracy of the detection model and maintain effective inference. It is validated on a dataset of six types of classroom behaviors. The experimental results show that the YOLOv7-CO model can successfully predict students’ classroom behaviors, and the model has a mAP of 84.0% and a detection speed of up to 24.63 frames per second, which is better than the original and comparison models.
Design and Implementation of Augmented Image for the Space Environment Journals Based on AR Technology
Authors: Bao Lili , Guo Yuan , Wang Rui , Cai Yanxia , Lei Lei
Published: March 2024

With the advancement of space exploration, the significance of space environment has grown. Currently, by means of the space environment journals, people can learn frontier in space environment domain. In order to make the space environment journals more attractive, this paper applies AR technology in the space environment journals. In system design, the web framework architecture of Operational Space Environment Technology System is adopted to periodically update the target image database, SIFT-TF-ORB algorithm is used for the recognition of space environment image with massive similar patterns and gradient distributions, and an improved HVQ-1d method is described to improve the visual quality of volume rendering for space environment. A mobile AR application has been developed for the Journal of Space Environment Monthly Report. By scanning a coronal mass ejection image in the journal, readers can see dynamic event process, monitoring index charts and forecast text. By scanning a coronal hole image or a solar flare image, readers can see a holographic 3D solar model, related charts and text. By scanning a near-Earth space environment image like an ionospheric image or an atmospheric image, readers can see a holographic 3D parameter model, as well as index charts and explanatory text. To evaluate our application, we conducted a questionnaire and user feedback indicated a relatively high level of satisfaction with the application. Thus, we have drawn a conclusion that AR technology can help readers interact with the space environment journals and make space environment events more intuitive and vivid, and easier to understand.
Trends in Design Disciplines in the Age of Artificial Intelligence: An SSCI-Based Bibliometric Analysis
Authors: Yi Xinyue , Jiang Bo
Published: March 2024

For the purpose of offering a thorough evaluation of the state of research at the moment and a world overview of artificial intelligence technologies in the field of design studies. Research literature on AI technology in the field of design was chosen as the data source after a search for SSCI literature in the WOS collection was undertaken. To organize the research pipeline, a bibliometric approach was taken, and a visual analysis was carried out using a combination of VOSviewer and CiteSpace. Higher education institutions are the primary research institutions, and the distribution of research in terms of disciplines demonstrates a multidisciplinary intermingling character. Research demonstrates that the number of publications on artificial intelligence technology in the field of design research has shown a rapid increase in recent years. The current research status has formed three major clusters of information processing technology, data identification and analysis, and intelligent-aided design. Research hotspots primarily focus on genetic algorithms, virtual reality, artificial intelligence in games, human-computer collaboration, system design, and computer-aided design, among other things. Future applications of AI technology in design will mostly center on technology-assisted design, multidisciplinary cultural design, deep learning, and human-machine collaboration.
B-HPD: Bagging-based hybrid approach for the early diagnosis of Parkinson’s disease1
Authors: Kumari Ritika , Singh Jaspreeti , Gosain Anjana
Published: March 2024

Parkinson’s disease (PD) is a neurodegenerative condition that affects the neurological, behavioral, and physiological systems of the brain. According to the most recent WHO data, 0.51 percent of all fatalities in India are caused by PD. It is a widely recognized fact that about one million people in the United States suffer from PD, relative to nearly five million people worldwide. Approximately 90% of Parkinson’s patients have speech difficulties. As a result, it is crucial to identify PD early on so that appropriate treatment may be determined. For the early diagnosis of PD, we propose a Bagging-based hybrid (B-HPD) approach in this study. Seven classifiers such as Random Forest (RF), Decision Tree (DT), Logistic Regression (LR), Naïve Bayes (NB), K nearest neighbor (KNN), Random Under-sampling Boost (RUSBoost) and Support Vector Machine (SVM) are considered as base estimators for Bagging ensemble method and three oversampling techniques such as Synthetic Minority Oversampling Technique (SMOTE), Adaptive Synthetic (ADASYN) and SVMSmote are implemented under this research work. Feature Selection (FS) is also used for data preprocessing and further performance enhancement. We obtain the Parkinson’s Disease classification dataset (imbalanced) from the Kaggle repository. Finally, using two performance measures: Accuracy and Area under the curve (AUC), we compare the performance of the model with ALL features and with selected features. Our study suggests bagging with a base classifier: RF is showing the best performance in all the cases (with ALL features: 754, with FS: 500, with three Oversampling techniques) and may be used for PD diagnosis in the healthcare industry.
Deep learning and saliency-based parking IoT classification under different weather conditions
Authors: Mago Neeru , Mittal Mamta , Hemanth D. Jude , Sharma Rakhee
Published: March 2024

The world’s population is growing at an exponential rate, which has created a slew of new issues in our daily lives. Among these challenges is the difficulty of finding available parking spaces. To overcome this obstacle, an effective system for detecting vacant parking spaces is crucial, particularly in densely populated areas. Even though there are numerous parking detecting systems on the market today, they all have their own set of restrictions. There are primarily two types of parking systems available. The first is a hardware-based system that uses hardware to detect whether a space is vacant or occupied, and the second is a smart parking system that uses cameras to classify parking status. Vision-based parking systems are becoming increasingly popular due to benefits such as flexibility and cost efficiency. However, due to challenging weather conditions and various occlusions caused by objects, such systems are challenging to develop. The limitations of a vision-based parking system must be addressed for it to become more accurate. To date, many researchers have attempted to incorporate deep learning-based parking systems with various algorithms but none of them has focused on reducing the complexity of Convolutional Neural Network (CNN) training through unsupervised pre-processing steps. In this study, an attempt is made to reduce the complexity of CNN by integrating salient features as a pre-processing step for normalizing weather conditions. It has been observed that salient features-based pre-processing makes the system more robust in terms of accuracy and time efficiency.
LogTODIM framework for MAGDM with neutrosophic sets: Energy conservation and emission reduction case
Authors: Jiang Pan
Published: March 2024

The significant acceleration of China’s urbanization process has greatly promoted economic development. At the same time, the massive construction of urban buildings has also caused many problems such as environmental pollution and increased energy consumption. Therefore, in architectural design, it is particularly important to pay attention to the sustainable development of the environment, handle the relationship between good people and nature under the guidance of the concept of green development, and focus on the recycling of resources. Focusing on resource utilization in architectural design and based on certain planning can better control the construction process of urban buildings, save energy consumption, reduce construction costs, and contribute to the green development of cities. The comprehensive evaluation of energy conservation and emission reduction of construction projects is a classical MAGDM problems. Recently, the Logarithmic TODIM (LogTODIM) method has been employed to cope with MAGDM issues. The single-valued neutrosophic sets (SVNSs) are used as a tool for characterizing uncertain information during the comprehensive evaluation of energy conservation and emission reduction of construction projects. In this paper, the single-valued neutrosophic number Logarithmic TODIM (SVNN-LogTODIM) method is built to solve the MAGDM under SVNSs. In the end, a numerical case study for comprehensive evaluation of energy conservation and emission reduction of construction projects is given to validate the proposed method.
Hellinger distance measures on Pythagorean fuzzy environment via their applications
Authors: Liu Zhe
Published: March 2024

Pythagorean fuzzy sets (PFSs) are a versatile tool for handling uncertain problems and have proven effective in practical applications. However, many existing Pythagorean fuzzy distance measures have counter-intuitive situations, making it challenging to measure the difference between PFSs accurately. To address this issue, we propose two distance measures for PFSs inspired by the Hellinger distance measure. We also explore the properties of the proposed measures and provide several comparative examples with existing measures for PFSs, illustrating their superior performance in processing fuzzy information from PFSs. Finally, we further develop a new decision-making method on top of the proposed measures and evaluate its performance in two applications.
Lung cancer tumor marker analysis: A clinical laboratory perspective
Authors: van Rossum Huub H. , Holdenrieder Stefan
Published: March 2024

Clinical laboratories are responsible for performing lung cancer tumor marker testing as part of routine clinical care. It is their responsibility to guarantee that the reported tumor marker results are reliable and meet the necessary quality standards for proper clinical use. During the different laboratory phases, pre-analytical, analytical and post-analytical, specific steps and processes can introduce errors and generate incorrect clinical interpretation. This editorial briefly outlines critical laboratory issues related to lung cancer tumor markers, specific for each of these three laboratory phases.
Modern view on the patient management with uterine polyps
Authors:   Yerevan State Medical University after Mkhitar Heratsi, Yerevan, Armenia, Khachatryan A.S. , Dobrokhotova Yu.E. ,   Pirogov Russian National Research Medical University, Moscow, Russian Federation, Ilyina I.Yu. ,   Pirogov Russian National Research Medical University, Moscow, Russian Federation, Kazantsev S.N. ,   Russian Gerontological Research and Clinical Center of the Pirogov Russian National Research Medical University, Moscow, Russian Federation
Published: March 2024

Nowadays, the presence of benign endometrial proliferations remains as an urgent matter in gynecology. Among these proliferations are uterine polyps (UPs), which have an incidence rate ranging from 25 to 35%. While UPs are typically benign, in rare cases (2–13%) they can contribute to the development of endometrial cancer. This review aims to explore the etiology, pathogenesis, risk factors, diagnostic methods, and treatment approaches associated with UPs. Currently, it is widely accepted that UPs have a multifactorial origin. Several risk factors for UPs have been identified, including obesity, hypertension, long-term use of cyclic menopausal hormone therapy, and tamoxifen therapy. Most researchers concur that hysteroscopic polypectomy is crucial due to the potential risk of malignancy. In the diagnosis of UPs, histological examination plays an important role in identifying the presence of atypia. However, it is important to note that surgical intervention does not guarantee the prevention of recurrent cases, highlighting the necessity for the development of pathogenetically justified methods to prevent UP recurrence. As of today, the relevant issue is the choice of patient management tactics in the postoperative period aimed at preventing UPs recurrence. KEYWORDS: uterine polyps, hysteroscopy, polypectomy, infertility, hormonal treatment, uterine polyp recurrence, endometrial cancer. FOR CITATION: Khachatryan A.S., Dobrokhotova Yu.E., Ilyina I.Yu., Kazantsev S.N. Modern view on the patient management with uterine polyps. Russian Journal of Woman and Child Health. 2024;7(1):35–40 (in Russ.). DOI: 10.32364/2618-8430-2024-7-1-5.