bluuebunny/crossref_metadata_2025 huggingface dataset:
Introduction of robotic pancreatoduodenectomy following phase 2a IDEAL guidelines
Authors: Mise Yoshihiro , Miyashita Mamiko , Yoshioka Ryuji , Kawano Fumihiro , Takeda Yoshinori , Ichida Hirofumi , Saiura Akio
Published: May 2024

Background

Robotic pancreatoduodenectomy (RPD) is a newly introduced procedure, which is still evolving and lacks standardization. An objective assessment is essential to investigate the feasibility of RPD. The current study aimed to assess our initial ten cases of RPD based on IDEAL (Idea, Development, Exploration, Assessment, and Long-term study) guidelines.

Methods

This was a prospective phase 2a study following the IDEAL framework. Ten consecutive cases of RPD performed by two surgeons with expertise in open procedures at a single center were assigned to the study. With objective evaluation, each case was classified into four grades according to the achievements of the procedures. Errors observed in the previous case were used to inform the procedure in the next case. The surgical outcomes of the ten cases were reviewed.

Results

The median total operation time was 634 min (interquartile range [IQR], 594–668) with a median resection time of 363 min (IQR, 323–428) and reconstruction time of 123 min (IQR, 107–131). The achievement of the whole procedure was graded as A, “successful”, in two patients. In two patients, reconstruction was performed with a mini-laparotomy due to extensive pneumoperitoneum, probably caused by insertion of a liver retractor from the xyphoid. Major postoperative complications occurred in two patients. One patient, in whom the jejunal limb was elevated through the Treitz ligament, had a bowel obstruction and needed to undergo re-laparotomy.

Conclusions

RPD is feasible when performed by surgeons experienced in open procedures. Specific considerations are needed to safely introduce RPD.
Service quality expectations of international fashion apparel brands in India: Satisfaction loyalty and the mediating role of culture
Authors: Singh Neetu
Published: May 2024

Service quality is an important determinant of customer brand experience, customer satisfaction and customer loyalty, with cross-cultural differences leading to varied expectations of service from consumers. Our research aims to understand the influence of the service quality expectations and cultural factors that influence customer satisfaction and loyalty, and the moderating role of cultural values on the relationship between customer satisfaction and loyalty of international fashion apparel brand purchasing of young consumers in India. Data collected across 142 young consumers in India via questionnaire are analysed using PLS_SEM structural modelling. The findings indicate that the service quality parameter tangibility has a significantly positive relationship with customer satisfaction while both reliability and formality positively influence customer loyalty. The cultural value self-transcendence depicts a significant positive relationship with customer loyalty, while the moderating effect of conservation on the relationship between customer satisfaction and customer loyalty is also significantly positive, validating the role of cultural values as both a predictor and moderator of customer purchase motivation.
Ontogenes in Drosophila Melanogaster and a Model of Speciation
Authors: Chadov B.F. , Fedorova N.B.
Published: May 2024

A new type of mutations-dominant lethals with a facultative manifestation -were discovered in D. melanogaster in 2000. These mutations were named conditional mutations. Under restrictive genetic conditions, the mutations manifest themselves as dominant lethals, whereas dominant lethality disappears under permissive conditions, displaying a set of other manifestations. The genes responsible for the emergence of conditional mutations were named ontogenes. The experiments with mutations in ontogenes have revealed the following processes: (1) genome editing in germline cells; (2) induction of high mutagenesis rates in germline cells of the mutants for ontogenes; (3) zygotic selection; (4) isolation of mutants; and (5) alterations in the lethality of mutants with time. The specific features in the manifestation of ontogenes together with the listed processes formed the background for construction of the model of speciation named the regeneration model. The event of speciation is represented as the regeneration of the working state of a genetic system disturbed by the emergence of a mutation in an ontogene. According to the model, it is ontogenes that are in charge of speciation and, eventually, the structure of living matter in the form of individual species. The significance of Mendelian protein-coding genes and Darwinian selection of the fittest according to these genes are doubtless but not paramount.
Art-cycle model: a holistic approach toward artistic experience in music performance
Authors: Benetti Alfonso , Hiney Aoife
Published: May 2024

This article proposes an art-cycle model based on autoethnographical practice aiming toward the sustainable development of the performer’s agency through documenting, evaluating, and understanding their musical practice and experiences. Literature relating to the evaluation of the performer’s musical practice tends to rely on external parameters, rarely focusing on whether the performer’s needs are met. Furthermore, there appears to be a dichotomy between the rehearsal process and the live performance experience, as they are frequently treated as separate entities, whereas we argue that musical practice is a cyclical process, an art-cycle, with phases of rehearsal punctuated by moments of performance that are followed by rehearsals. In order to address issues relating to the academic validity of the artist’s experiences and the development of the performer’s agency as an artist/researcher, the art-cycle model is based on autoethnography, affording a sustainable and flexible means of investigating the art-cycle from the performer’s perspective. Therefore, we suggest that the proposed model could be incorporated into the performer’s practice in order to analyse, evaluate, and disseminate their experiences through an interaction between critical self-reflection with art-making and artistic output, producing new and pertinent knowledge compatible with both artistic subjectivity and academic prerogatives.
'Four forms of co-creativity': A framework for the analysis of artistic research as musical composition
Authors: Rudland Oliver
Published: May 2024

This article presents a new framework entitled ‘Four Forms of Co-creativity’ for the musical analysis of artistic (or practice) research projects involving co-creative activities with community participants to reveal the socially contingent properties of such activities. More specifically, this article details a research project involving a series of collaborative workshops with the Leeds Male Voice Choir (LMVC) to develop materials for a community opera. This process is captured through an ethnographic account of the workshops in conjunction with audio recordings and notated transcriptions of vocal improvisations conducted during the workshops. Together with a historical and social account of LMVC, the framework is then deployed to analyse the various levels of co-creativity present in the workshop activities and their effects on the ensuing passages of operatic dialogue. The article then considers the wider application of the framework to other forms of musical composition and performance possible within contemporary societies.
La gestión de las migraciones. El impacto económico de los migrantes
Authors: González-Rabanal Miryam C. , Enache Nicoleta
Published: May 2024

El fenómeno de las migraciones forma parte de la historia de la humanidad y en su desarrollo y explicación están implicadas variables de muy diferente naturaleza: económicas, políticas, jurídicas, demográficas, medioambientales, humanitarias y personales. Por ello su estudio debe tratar de hacerse desde un enfoque interdisciplinar y holístico, al igual que su gestión. Sin embargo, la prevalencia de las causas económicas y de las repercusiones de esta misma consideración hacen que deban ser tenidas en cuenta de forma especial. La obra que se presenta pretende ofrecer un planteamiento plural a la hora de abordar el estudio de los movimientos de población y proponer medidas orientadas a una mejor gestión de los flujos migratorios. De la mano de dos profesoras universitarias con amplia trayectoria en el análisis de las migraciones, una rumana, la Profesora Enache, y otra española, la Profesora González- Rabanal, se presenta una investigación jurídico-económica de estas cuestiones, con el conocimiento adicional que proporciona el pertenecer a dos países con fuertes vínculos en lo concerniente a las migraciones europeas recientes, Rumanía, uno de los principales emisores de emigrantes, y España, uno de los destinos prioritarios de esta emigración. Confiamos en que con la lectura de este libro contribuya a desarrollar una visión crítica y constructiva a la hora de ver lo claro y lo “no tan claro” concerniente a las migraciones contemporáneas.
Elemen Desain yang Adaptif terhadap Kebijakan Adaptasi Kebiasaan Baru Pandemi COVID-19 di Kawasan Alun-Alun Klaten
Authors: Santoso Ersan Putro , Suwandono Djoko
Published: May 2024

Pandemi COVID-19 merupakan bencana skala global sejak tahun 2020 yang melahirkan perilaku baru bagi masyarakat dengan mengharuskan adanya protokol kesehatan : menjaga jarak, memakai masker, dan rajin mencuci tangan. Ruang publik merupakan ruang yang masih dikunjungi oleh banyak orang di masa pandemi, salah satunya Alun-Alun Klaten. Banyak ruang publik didesain dengan prinsip close (dekat) dan closure (tertutup). Prinsip tersebut saat pandemi ternyata bertentangan dengan kebijakan protokol kesehatan sehingga diperlukan penyesuaian. Oleh karena itu, penelitian ini dilakukan dengan tujuan untuk mengidentifikasi penerapan elemen desain di Kawasan Alun-Alun Klaten yang adaptif terhadap Kebijakan Adaptasi Kebiasaan Baru Pandemi COVID-19. Penelitian ini menggunakan metode kuantitatif dengan teknik analisis statistik deskriptif dan skoring. Pengumpulan data dilakukan dengan observasi lapangan dan studi dokumen. Teknik sampling yang digunakan adalah berupa accidental sampling dengan ukuran sampel sejumlah 865 sampel. Penelitian ini dilakukan dengan menganalisis aktivitas pengguna dan kesesuaian elemen desain terhadap protokol kesehatan. Hasil penelitian menunjukkan bahwa elemen desain di Alun-Alun Klaten berupa bangku taman, jalur pedestrian, bangunan pedagang kaki lima, dan tempat cuci tangan belum mampu mewadahi aktivitas pengguna di tengah kondisi Pandemi COVID-19. Oleh karena itu, Alun-Alun Klaten perlu menerapkan flexible design terhadap elemen desain yang sudah ada dengan melakukan penyesuaian desain sesuai prinsip protokol kesehatan. Kata kunci: Aktivitas pengguna; Elemen desain; Protokol kesehatan.
Oblicza rosyjskiego tradycjonalizmu kulturowego (rozważania w cieniu ‘zetyzmu’)
Authors: Jedliński Marek
Published: May 2024

Цель статьи – представить различные образы русского культурного традиционализма в контексте идеологии зетизма (связанной с агрессией России против Украины). В первой части статьи рассматриваются теоретические положения традиции и традиционализма. Во второй части представлена ​​концепция археомодернизма Александра Дугина, взгляды Николая Бердяева на демократию, создание большевиками собственной традиции (время, календарь) и русский, традиционалистский взгляд на проблемы телесности, интимности, женственности и сексуальности. Во всех случаях можно увидеть глубоко укоренившийся русский культурный традиционализм.
Władze Federacji Rosyjskiej wobec relacji język ↔ tożsamość narodowa (interpretacja narratologiczna)
Authors: Hordecki Bartosz
Published: May 2024

В главе указано, что русская культура плотная сообщениями пропагандирующими русский язык как один из важнейших ее источников и проявлений. Власти Российской Федерации систематически используют этот факт для создания собственной языковой политики. Она выражает стремление контролировать, моделировать и цензурировать современную российскую национальную идентичность. Следовательно, Российская Федерация, в тем в частности ее президент, развивает и пропагандирует неоимперическй пнарратив относительно русского языка и языковой политики. Российское государство пытается навязать етот нарратив в качестве оправдания собственного милитаризма, сверхдержавной политики, вторжения в Украину, а также вмешательства во внутренние дела соседних государств. В свете официальной позиции РФ, вера в величие и необыкновенность русского языка должна существовать как опора идентичности современного русского человека (как гражданина РФ, так и мифического представителя так называемого „русского мира”). Это означает, что русский язык используется как инструмент политической мобилизации, изолирующей русских от других народов. Это приводит к росту негативного отношения к русскому языку, который все чаще ассоциируется как средство русского культурного империализма.
The effects of myosteatosis on skeletal muscle function in older adults
Authors: Dondero Kathleen , Friedman Ben , Rekant Julie , Landers‐Ramos Rian , Addison Odessa
Published: May 2024

Myosteatosis, or the infiltration of fatty deposits into skeletal muscle, occurs with advancing age and contributes to the health and functional decline of older adults. Myosteatosis and its inflammatory milieu play a larger role in adipose tissue dysfunction, muscle tissue dysfunction, and increased passive muscle stiffness. Combined with the age‐related decline of sex hormones and development of anabolic resistance, myosteatosis also contributes to insulin resistance, impaired muscle mechanics, loss of force production from the muscle, and increased risk of chronic disease. Due to its highly inflammatory secretome and the downstream negative effects on muscle metabolism and mechanics, myosteatosis has become an area of interest for aging researchers and clinicians. Thus far, myosteatosis treatments have had limited success, as many lack the potency to completely rescue the metabolic and physical consequences of myosteatosis. Future research is encouraged for the development of reliable assessment methods for myosteatosis, as well as the continued exploration of pharmacological, nutritional, and exercise‐related interventions that may lead to the success in attenuating myosteatosis and its clinical consequences within the aging population.
Thyroglobulin measurement is the most powerful outcome predictor in differentiated thyroid cancer: a decision tree analysis in a European multicenter series
Authors: Giovanella Luca , Milan Lisa , Roll Wolfgang , Weber Manuel , Schenke Simone , Kreissl Michael , Vrachimis Alexis , Pabst Kim , Murat Tuncel , Petranović Ovčariček Petra , Campenni Alfredo , Görges Rainer , Ceriani Luca
Published: May 2024

Objectives

An accurate prognostic assessment is pivotal to adequately inform and individualize follow-up and management of patients with differentiated thyroid cancer (DTC). We aimed to develop a predictive model for recurrent disease in DTC patients treated by surgery and 131I by adopting a decision tree model.

Methods

Age, sex, histology, T stage, N stage, risk classes, remnant estimation, thyroid-stimulating hormone (TSH), thyroglobulin (Tg), administered 131I activities and post-therapy whole body scintigraphy (PT-WBS) were identified as potential predictors and put into regression algorithm (conditional inference tree, c-tree) to develop a risk stratification model for predicting persistent/recurrent disease over time.

Results

The PT-WBS pattern identified a partition of the population into two subgroups (PT-WBS positive or negative for distant metastases). Patients with distant metastases exhibited lower disease-free survival (either structural, DFS-SD, and biochemical, DFS-BD, disease) compared to those without metastases. Meanwhile, the latter were further stratified into three risk subgroups based on their Tg values. Notably, Tg values >63.1 ng/mL predicted a shorter survival time, with increased DFS-SD for Tg values <63.1 and <8.9 ng/mL, respectively. A comparable model was generated for biochemical disease (BD), albeit different DFS were predicted by slightly different Tg cutoff values (41.2 and 8.8 ng/mL) compared to DFS-SD.

Conclusions

We developed a simple, accurate and reproducible decision tree model able to provide reliable information on the probability of structurally and/or biochemically persistent/relapsed DTC after a TTA. In turn, the provided information is highly relevant to refine the initial risk stratification, identify patients at higher risk of reduced structural and biochemical DFS, and modulate additional therapies and the relative follow-up.
The distribution of Manin’s iterated integrals of modular forms
Authors: Matthes Nils , Risager Morten S.
Published: May 2024

We determine the asymptotic distribution of Manin’s iterated integrals of length at most 2. For all lengths, we compute all the asymptotic moments. We show that if the length is at least 3, these moments do in generalnotdetermine a unique distribution.
Numerical investigation of smart material-based structures for vibration energy-harvesting applications
Authors: Atul  , Deepak G. Divya
Published: May 2024

The present work deals with energy-harvesting devices, which are useful in scavenging power using piezoelectric materials. Utilizing classical beam theory and classical plate theory, finite element modelling has been carried out to optimize the performance of output power of a cantilever beam and a flexible rectangular plate. Harmonic oscillations and base excitation will be the two different forcing functions used to drive the system. Based on this, numerical investigations of the performance of output power for the piezoelectric cantilever beam and flexible rectangular plate with different cases are considered. The present work is also useful for designing the piezoelectric cantilever beams and plates to extract maximum output power within the frequency ranges from 0 to 200 Hz. Numerical investigations on the piezoelectric cantilever beam and flexible rectangular plate with different cases reveal that the performance of output power is influenced by factors like load resistance, applications of with and without host structures, and different design parameters like unimorph, bimorph, embedded, line- and cross-type piezoelectric patch arrangements.
Hydrothermal enzyme pretreatment on structure and properties of apple branches
Authors: Yuan Jieying , Li Yibo , Li Shulei , Liu Zheyun , Lu Yunjing , Dang Shuoyu , Ding Fan , Yu Ruijin , Chu Jie
Published: May 2024

Pretreatment serves as an important step in maximizing the efficient utilization of woody biomass feedstock. This study focused on enhancing the component and structural properties of apple wood to optimize the utilization of apple wood resources effectively. This study presents the optimization of, the apple wood pretreatment system, combining bioenzyme and hydrothermal treatments. This study aimed to investigate the effect of different bioenzyme pretreatment conditions on the components and structural properties of apple wood extract and to analyze the feasibility of enzyme solution reuse. Fourier transform infrared spectroscopy analysis revealed an increase in cellulose content in the wood flour following enzyme treatment. Concurrently, changes in characteristic peaks indicated an increased hemicellulose content and a reduction in lignin content after the pretreatment, correlating with fraction analysis results. Scanning electron microscopy illustrated that the dense structure of the fiber surface was disrupted after treatment. Notably, the results indicated that the recovered biocomposite enzymes exhibited excellent activity, suggesting their potential for reuse.
Physicochemical properties, the digestible and resistant starch content of chestnut flour with different particle sizes
Authors: EREM Fundagül
Published: May 2024

In this study, chestnuts were processed into flour, and the obtained chestnut flour (CF) was passed through a sieve with an aperture size of 212 µm. Then the physicochemical properties, digestible and resistant starch contents of CF1 (<212 µm), CF2 (≥212 µm), and commercial chestnut flour (CCF) were determined. It was found that CCF had the highest values in terms of proximate composition, total soluble polyphenol content (891.25 mg GAE/100 g), and antioxidant activity (ABTS: 1552.11 mg TE/100 g, DPPH: 2003.01 mg TE/100 g). On the other hand, CF1 was superior in terms of resistant starch content (39.31 g/100 g, dw) (p < 0.05). The resistant starch content of CF1 was approximately 1.5-fold and 3-fold higher than CCF and CF2, respectively. Furthermore, the rapidly digestible starch content of CF1 (2.1 g/100 g, dw) and CF2 (0.93 g/100 g, dw) was quite lower than CCF (12.64 g/100 g, dw) (p < 0.05). Moreover, CF1 exhibited lower (p < 0.05) water, alkaline water, and sodium carbonate retention capacities, which make it a potential good flour for cookie and cracker production. In contrast, CF2 could be evaluated as a good ingredient for noodle-type foods due to its lower water solubility index. Considering the least gelation concentrations of samples, it was seen that CF1 (% 10) could also be valorized as a thickening or gelation agent in the food industry, as well as CCF (% 6).
“Let’s talk divorce”: a multimodal critical discourse analysis of Oduduwa secessionist discourse
Authors: Aminu PraiseGod , Awopetu Ifeoluwa , Unuabonah Foluke Olayinka
Published: May 2024

This study explores ideological representations in the online images of the Oduduwa secessionist movement in Nigeria from a multimodal critical discourse analytical framework. The data, which comprise selected internet images obtained from the Facebook and Twitter accounts of the group, were qualitatively analyzed. The findings reveal that the images are ideologically designed to resist the Nigerian nation, call for the Yoruba nation, signal membership polarization, construct an Oduduwa national identity, construct the betrayal of the Yoruba nation, accentuate violence in Nigeria, and delegitimize the Nigerian nation. We argue that these discursive strategies are used to project resistance as well as radical and secessionist ideologies, which appear to be typical of secessionist organizations around the world. Additionally, this article sheds light on the paramount significance of ethnic identity in the organizational dynamics of resistance groups operating within the Nigerian context.
Healthcare workers’ attitudes toward children getting Covid-19 vaccinations in Gaza Strip
Authors: Sha Shuying , Abusalem Said Kamel , Abuhammad Sawsan , Al-Jeesh Yousef
Published: May 2024

Background and objectives

Healthcare workers’ (HCWs) attitudes toward vaccine greatly influences individuals’ vaccine acceptance rate. Research in high-income countries identified five key person-level factors for vaccine hesitancy. Perception of vaccine were different in low-income or developing country, and the reason for vaccine hesitancy might not be the same as that in developed countries. This study assesses HCWs parents’ attitude toward their child getting COVID-19 vaccine and the potential influencing factors in HCWs living in Gaza Strip.

Method

This is a secondary data analysis of a cross-sectional survey collected from 245 HCWs in Gaza between February and May in 2021. Multinominal logistic regression was used to model the association between vaccine hesitancy and potential influencing factors.

Results

Only 27.2% HCWs parents in Gaza responded that they would like their children to get vaccinated. Higher perceived benefits of vaccine and having flu shot in last year were significantly related to higher vaccine intention (P-values <0.001). However, perceived susceptibility, perceived vaccine safety, and vaccine effectiveness were not significantly associated with vaccine hesitancy.

Conclusion

Intervention in Gaza Strip should focus on educating people on vaccine benefits to foster the acceptance of the vaccine.
Tramadol-paracetamol for postoperative pain after spine surgery – A randomized, double-blind, placebo-controlled study
Authors: Lappalainen Emma , Huttunen Jukka , Kokki Hannu , Toroi Petri , Kokki Merja
Published: May 2024

Objectives

Multimodal pain management is one component in enhanced recovery after surgery protocol. Here we evaluate the efficacy of tramadol–paracetamol in acute postoperative pain and pain outcome at 12 months after spine surgery in randomized, double-blind, placebo-controlled trial.

Methods

We randomized 120 patients undergoing spine surgery to receive, for add-on pain management, two tramadol–paracetamol 37.5 mg/325 mg (n = 61) or placebo tablets (n = 59) twice a day for 5 postoperative days. In the hospital, multimodal pain management consisted of dexketoprofen and oxycodone. After discharge, patients were prescribed ibuprofen 200 mg, maximum 1,200 mg/day. Pain, analgesic use, and satisfaction with pain medication were followed up with the Brief Pain Inventory questionnaire before surgery and at 1 and 52 weeks after surgery. The primary outcome was patients’ satisfaction with pain medication 1 week after surgery.

Results

At 1 week after surgery, patients’ satisfaction with pain medication was similarly high in the two groups, 75% [interquartile range, 30%] in the placebo group and 70% [40%] in the tramadol–paracetamol group (p = 0.949) on a scale: 0% =  not satisfied, 100% = totally satisfied. At 1 week, ibuprofen dose was lower in the placebo group 200 mg [1,000] compared to the tramadol–paracetamol group, 800 mg [1,600] (p = 0.016). There was no difference in the need for rescue oxycodone. Patients in the tramadol–paracetamol group had more adverse events associated with analgesics during the first postoperative week (relative risk = 1.8, 95% confidence interval, 1.2–2.6).

Conclusion

Add-on pain treatment with tramadol–paracetamol did not enhance patients’ satisfaction with early pain management after back surgery.
Surface mortar detection and performance evaluation of recycled aggregates based on hyperspectral technology
Authors: Liu Wenqian , Fang Huaiying , Yang Jianhong , Tan Guoyi
Published: May 2024

The quality of recycled aggregates is affected by the residual mortar. It is significant to detect the surface mortar distribution of recycled aggregates after mortar removal by mechanical crushing. From this perspective, a method to accurately detect the surface mortar distribution of recycled aggregates is proposed. The processed hyperspectral features were obtained by applying data filtering and screening, L2 norm processing, feature transforming and dimensionality reduction. Then these features were put into an extreme learning machine (ELM) for offline training, and a sliding window processing mechanism was added to the trained model, which was used to detect the recycled aggregates and output the category images. Finally, two characterization parameters of the proportion of mortar area and the mortar volume were extracted from the images. The regression models of water absorption (WA) and apparent density (AD) of recycled aggregates were obtained based on the proportion of mortar area and the mortar volume, with the determination coefficients of 0.99. The results demonstrated that the proposed approach could be profitably applied to evaluate the quality of the recycled aggregates, which lays a foundation for visual identification and intelligent sorting of recycled aggregates.
Religiosität und soziale Schichtung: Eine Kohortenstudie mit ALLBUS-Daten
Authors: Lois Daniel
Published: May 2024

Das Ziel der Studie besteht darin, die soziale Schichtposition von verschiedenen Religiositäts-Typen, die neben traditionell-christlichen Formen auch außerkirchlich-alternative Angebote umfassen, deskriptiv im Kohortenverlauf zu untersuchen (ALLBUS-Wellen 1991, 2002 und 2012, N = 7834). Für die alten Bundesländer finden sich Hinweise auf eine sozialstrukturelle Angleichung zwischen engagierten Katholiken und Areligiösen, die sich deutlich durch eine Auflösung des katholischen Bildungsdefizits in der Kohorte 1922–1934 zeigt. Für die neuen Bundesländer wird deutlich, dass die verbliebenen engagierten Christen eine vergleichsweise hohe soziale Schichtposition aufweisen. Weiterhin bestehen bei alternativen Religiositätsformen sowohl in den alten wie in den neuen Bundesländern deutliche Unterschiede in der sozialen Schichtposition. Während Aberglaube und magische Praktiken hier klar im unteren Schichtspektrum verortet sind, erweisen sich Mystik, Esoterik und Paramedizin als typisch für höhere soziale Schichten.
Floristic Composition and Ecological Analysis of Beech and Bosnian Maple Forest (Aceri obtusati-Fagetum Fab., Fuk. & Stef. 1963) on Manjača Mountain (Bosnia and Herzegovina)
Authors: Eremija Saša , Jovanović Filip , Stajić Snežana , Braunović Sonja , Čigoja Ilija , Ćirković Mitrović Tatjana , Češljar Goran
Published: May 2024

The results of phytocoenological research in the community of beech and Bosnian maple (Aceri obtusati-Fagetum Fab., Fuk. & Stef. 1963) on the territory of Manjača Mountain in the southwestern part of the Republic of Srpska (Bosnia and Herzegovina) are presented in this paper. The spectrum of range of distribution types, and the spectrum of life forms and ecological conditions were determined for the community. Regarding the spectrum of floral elements, this community has Central European-Pontic-Central Asian-Sub-Mediterranean character, meaning that thermoxerophilic plant species participate in its composition, in addition to mesophilic species. In terms of the spectrum of life forms, the community has phanerophytic-hemicryptophytic character. According to the quantity of nitrogen in the soil, the community is predominantly mesotrophic, in terms of light it is semi-sciophilous, in terms of temperature it is mesothermal, in terms of soil reaction it is neutrophilic, and regarding soil moisture it has xeromesophilic character.
Strength of Kaolinitic Clay Soil Stabilized with Lime and Palm Oil Fuel Ash
Authors: Zaini Muhammad Syamsul Imran , Hasan Muzamir , Md Jariman Wafiyuddin
Published: May 2024

The use of palm oil fuel ash (POFA) mixed with lime as a catalyst in soil stabilization can significantly improve the stability of problematic soils and improve their engineering properties. Problematic soils can obstruct the construction process due to its low strength and low bearing capacity. In this study, various laboratory tests were carried out to determine the engineering properties of the soil’s mixture which includes Atterberg limit, particle size distribution, compaction, and unconfined compression test. 4%, 8% and 12% POFA were mixed with 6% hydrated lime to stabilized the kaolinitic clay soil at different curing days (1, 7, 14, and 30 days). Compared to untreated kaolin, the addition of POFA plus lime resulted in higher undrained shear strength. The maximum undrained shear strength (USS) is 32.68kN/m2, which was obtained on the 30th day of curing with the optimal mixture of stabilized kaolin which is kaolin mixed 6% of lime and 12% of POFA. The unconfined compressive strength increased by 185.04% compared to the unconfined compressive strength of untreated kaolinitic clay with a value of 65.36 kN/m2. This proves that kaolin stabilized with lime and POFA can increase the strength parameters of clay, thus reducing construction costs for soil stabilization and reducing environmental issues.
Wind Turbine Plate Thickness Design Optimization
Authors: Aam Amaningsih Jumhur  , Sirojuddin  , Haryo Suharjo  , Dyah Arum Wulandari  , Jaafar Nur Najmiyah
Published: May 2024

The design of the blade thickness of the Darrieus wind turbine should be optimized. This study aims to obtain the optimal thickness of the blade plate so that its weight and strength can be optimal. The design begins with preliminary calculations to find the optimal dimensions based on a wind speed of 15 m/s. The blade design was drawn in 2D using AutoCAD software, followed by 3D manufacturing, and material stress analysis was carried out with Autodesk Inventor software. The optimization of the yield stress value compared to the applied stress is 3.0. The software simulation of stress analysis results found that the most optimal thickness was 0.2 mm at variant B-3.
Analysys of Variation of Soaking Duration of Asphalt Concrete Wearing Course (AC-WC) Mixture Using Natural Rubber Modified Asphalt Against Indirect Tensile Strength Value (ITS)
Authors: Saleh Alfian , Siregar Iwan Ananda , Anggraini Muthia
Published: May 2024

Natural rubber asphalt modification is the result of the mixing of asphalt with natural rubber plus chemical additives of vulcanization (sulfur) that are mixed into one in a hot state. The addition of natural rubber makes the asphalt more elastic and able to withstand loads from heavier vehicles, more heat-resistant, and more adhesive to aggregates that make the road surface more resistant to cracks and holes. The research aims to analyze indirect tensile strength values in asphalt-modified natural rubber. The research method is a laboratory experimental study referring to SNI 6753:2015, with immersion variations of  ½ hour, 24 hours, 48 hours, and 72 hours. The results of the study were indirect tensile strength values at congestion for 12 hours, 24 hours, 48 hours, and 72 hours in a row of 459,752 KPa, 427,571 KPa, 379,771 KPa, and 379,971 KPa. The resulting tensile strength ratio for each variation is 100%, 92.98%, 82.59%, and 75.52%. The study concluded that the tensile strength ratio at submersion for ½ hours, 24 hours, and 48 hours meets the requirements of the AASTHO T-283 specification.
Numerical study of steady pipe flows and head loss coefficients
Authors: Bangun Emma Patricia , Mahdi Nabil
Published: May 2024

The study concerns steady pipe flows within 90o-bend and T-junctions, the head loss coefficients and the physical mechanisms responsible for the energy loss. Numerical viscous flow modelling based on SimpleFOAM solver were implemented in the study. Although secondary flow acts as the mechanism of energy loss in both the bend and in the branch flow of T-junction, the head loss coefficient in the former more critically depends on Reynolds (Re) number. This is supported by the comparison of the streamline fields and the radially varying profiles of the pressures from both cases. The location of flow separation prior to the secondary flow in the bend changes with Re number unlike the fixed location at the junction in the branch flow. The study confirms a practical implication related to the dependence of the head loss coefficients for pipe with 90o-bend and T-junction on flow velocity in an analysis of pipe network.
Analysis of Public Transportation (Trans Metro Dewata Bus) as a Congestion Solution
Authors: Kariyana I Made , Sumarda Gede , Diasa I Wayan , Pamungkas Tri Hayatining , Putra I Putu Esa Mahardika
Published: May 2024

In urban areas in Indonesia, traffic jams are usually not spared due to the large number of movement activities caused by the community. As happens on Gajah Mada Road, Denpasar, there are pretty frequent traffic jams, considering that this area is located in the middle of the city, where there are shophouses or shops situated side by side almost all the way. This problem is worthy and interesting to research to find out the situation. If passing vehicles are made to ride public transportation, how significant an impact will be, considering that the public transportation (Trans Metro Dewata) that often crosses this road is not operating as intended. The analysis was carried out in 3 time periods, with each period, namely morning at 06.00 - 08.00 WITA, noon at 11.00 - 13.00 WITA, and afternoon at 16.00 - 18.00 WITA. Based on the use of analysis of road performance in the form of degree of saturation with adjusted road service levels, and varied by adding assumptions regarding the use of public transportation that is likely to be effective. So, the results obtained align with the direction of this research, which found that between the original traffic flow conditions and the existing assumptions, there was a change of 7% to 24% in the level of road service. This is quite influential because it can be applied as a solution to the congestion.
Culturas pedagógicas de docentes indígenas Cabécares. Una mirada a su trabajo áulico
Authors: Gutiérrez Hernández Mónica
Published: May 2024

En este artículo se presenta una iniciativa investigativa que realizó un acercamiento de manera respetuosa a la historia escolar de cinco personas indígenas cabécares del territorio de Chirripó-Duchíi (como se nombra entre las personas cabécares), que se encuentran en el ejercicio docente del Programa de Lengua y Cultura Cabécar del Ministerio de Educación Pública de Costa Rica, entre 2018 y 2020. Se propuso como objetivo general analizar narraciones de la etapa escolar y del trabajo áulico de docentes indígenas cabécares de Chirripó para la identificación de elementos didácticos que contribuyan al ejercicio docente con pertinencia cultural, lo que se consiguió mediante la socialización de narraciones y observaciones que permitieron identificar elementos didácticos que podrían sumar a los esfuerzos, por ofrecer a la niñez de estas comunidades, una educación acorde con su visión de mundo y su entorno. Es un estudio que por sus características se inscribió como una investigación cualitativa de tipo exploratoria y descriptiva. Entre los principales resultados se destaca que el estudio posibilitó reconocer que a pesar de que la educación escolar que recibieron las personas docentes fue mediada por la cultura dominante, realizan esfuerzos importantes por deconstruir las relaciones asimétricas sesgadas respecto a la cultura occidental dando lugar, en la medida de sus posibilidades, a la cultura originaria y al reconocimiento de la diversidad cultural.
Factores socioculturales que favorecen la permanencia de estudiantes indígenas bribris en la Universidad de Costa Rica
Authors: Blanco Torres María Jesús , Mata Row Rebeca , Murillo Garita Mauro , Osorio Villegas Joseph , Elena Segura Solano María , Umaña Bonilla Joselyn , Morales Trejos Carol
Published: May 2024

El presente artículo presenta los resultados respecto a factores socioculturales que favorecen la permanencia en la Educación Superior de la población indígena bribri. Estos se derivan de la investigación titulada Permanencia del estudiantado indígena Bribri de la Sede Rodrigo Facio Brenes, Universidad de Costa Rica: una mirada desde el enfoque intercultural, la cual fue llevada a cabo entre los años 2018-2019. La investigación parte del paradigma naturalista bajo el enfoque cualitativo y emplea el método fenomenológico en el diseño investigativo, acceso al campo, elaboración de instrumentos y análisis de los datos recolectados. Se emplearon entrevistas a profundidad y grupos focales para conocer la experiencia universitaria de seis estudiantes indígenas provenientes del pueblo Bribri. El estudio utiliza un enfoque intercultural en el análisis de los factores, que promueve la permanencia de la población en la educación superior, y es esa mirada la que permite abordar el factor sociocultural en el fenómeno de la permanencia. Dentro de los principales hallazgos se reconoce la tendencia de la población participante a brindarle especial reconocimiento y valoración a su propia cultura mediante el rescate de saberes ancestrales y espirituales que les enorgullecen e identifican en el contexto universitario. Se concluye, además, la importancia de favorecer, desde la universidad, los ajustes necesarios para que la población indígena permanezca en el sistema educativo superior. Asimismo, se destacan los esfuerzos que el estudiantado realiza al tener que trasladarse del territorio indígena a lo urbano, lo que representa un cambio de contexto, y la complejidad de establecer nuevas relaciones con otros agentes educativos, factores que influyen de manera significativa en su desarrollo integral y éxito académico.
Transtorno do Déficit de Atenção com Hiperatividade na perspectiva materna
Authors: Cheffer Maycon Hoffmann , Spasin Sara Cristina de Oliveira , Sletten Camila Maculan , Weizemann Luana Patricia , Campos Terezinha Aparecida , Salci Maria Aparecida , Higarashi Ieda Harumi
Published: May 2024

O objetivo deste estudo foi discutir o processo de diagnóstico inicial do Transtorno do Déficit de Atenção com Hiperatividade infantojuvenil e as interlocuções educação, saúde e família sob a ótica materna. Trata-se de um estudo exploratório, descritivo, de abordagem qualitativa, envolvendo 10 mães de crianças e adolescentes diagnosticados com Transtorno do Déficit de Atenção com Hiperatividade em tratamento com Metilfenidato. A coleta de dados ocorreu em fevereiro de 2022 em um município de médio porte no sul do Brasil por meio de entrevistas individuais, submetidas à análise de conteúdo, no software MAXQDA. Emergiram duas categorias: Sinais e sintomas de Déficit de Atenção e Hiperatividade: o papel da escola no pré-diagnóstico do Transtorno do Déficit de Atenção com Hiperatividade infantojuvenil e a Atenção Primária em Saúde como porta de entrada para o diagnóstico e tratamento do transtorno e a medicalização como terapêutica de eleição na atenção especializada. Conclui-se que há uma interface entre educadores, escola, mães, médicos da atenção básica e da atenção especializada para o diagnóstico e tratamento do transtorno.
Sistem Informasi Absensi Mahasiswa Magang Menggunakan PHP dan MySQL Berbasis Web di STMIK AMIK Dumai
Authors: Indriyani Wulan , Kencono Tetuko Catur Adi , Widodo Pulla Pandika
Published: May 2024

STMIK AMIK Dumai is a private tertiary institution engaged in the field of education in Indonesia that organizes internships for students in government and private institutions. Currently STMIK AMIK Dumai does not have a system that can manage student internship data and still uses a diary. This manual method is still ineffective for taking attendance and writing daily activities without evidence of activity. The purpose of this research is to design a website-based apprentice attendance application with software PHP and database MySQL. The aim is to monitor attendance, licensing and daily activities of apprentice students during working hours in government and private agencies. So that the entire process and management of internship information can run properly and accurately with photo evidence of activities. The method used in this study is the waterfall method, this method basically accurately describes the situation at the internship location for each student. The application of this internship attendance application is able to improve attendance accuracy and make daily activities more systematic to achieve efficiency.
Penggunaan Metode Preference Selection Index (PSI) Untuk Penentuan Kondisi Laser Cutting
Authors: Lizar Yaslinda , Firrizqi Alya Sahira
Published: May 2024

This study discusses the application of the Preference Selection Index (PSI) method or Preference Selection Index to be able to optimize laser cutting. The application of the PSI method represents the decision making of a multi-criteria MCDM that has not been studied more and requires a consideration in determining laser cutting parameters. The main purpose of applying this method is for multi-criterion decision making (MCDM) that does not require an assessment of the relative significance of the criteria under consideration. The method used is the preference selection index, which can provide convenience in making decisions because the process is very simple. The results of experiments using the L27 Taguchi orthogonal array, Cut surface roughness, heat-affected zone (HAZ), kerf width and material removal rate (MRR) were considered optimization criteria. The methodology is found to be particularly useful in real manufacturing environments as it involves simple calculations that are easy to understand and apply.
Analisis Pergerakan Harga Emas Berjangka Menggunakan Model Fuzzy Time Series Markov Chain
Authors: Afrimayani Afrimayani , Putri Darvi Mailisa
Published: May 2024

Gold is one type of precious metal that can be an investment instrument to protect the value of wealth. Gold price movements need to be known in investing, this can be observed usinga time series model that can predict gold prices in the next period. Gold price movement models can be used as investor guidelines in planning and decision making to increase profits and prevent losses. Gold price movements modeled with a numerical approach can be done through the Fuzzy Time Series Markov Chain (FTSMC) model. The modeling results show that the FTSMC can model gold prices and has good accuracy values with small MAPE, RMSE, and MAE values. This indicates an excellent goodness of fit for the FTSMC model. Long-term stability for gold price movements provides investment benefits because gold has value as an asset that tends to be stable, easy to liquidate in cash, free from interest, has a role as an emergency fund and can protect the value of wealth.
Pemodelan Matematika dan Analisis Kestabilan Model Pada Penyebaran HIV/AIDS Tipe SITA (Susceptible, Infected, Treatment, AIDS)
Authors: Mahuda Isnaini , Rofiroh Rofiroh
Published: May 2024

HIV/AIDS still become a major public health problem that occurs in almost all countries in the world. Until now, no medicine has been found that can treat HIV/AIDS. However, there is therapy or treatment that can be done to slow the spread of the virus, namely antiretroviral (ARV) or called Antiretroviral Therapy (ART). The mathematical modeling carried out in this study uses the SITA type where there are 4 compartments, namely Susceptible (S), Infected (I) Treatment (T), and AIDS (A) in a closed population. The objectives of this research are: 1) to construct a mathematical model for the spread of SITA type HIV/AIDS, 2) determine the equilibrium point and stability of the equilibrium point of the model, 3) determine the basic reproduction number (R_0), and 4) carry out a dynamic simulation of the model. Mathematical modeling of the spread of SITA type HIV/AIDS produces two equilibrium points, namely the disease-free equilibrium point (E_1) and the endemik equilibrium point (E_2). From the results of the analysis, the basic reproduction ratio (R_0) was also obtained by building a matrix called the Next Generation Matrix (NGM). The basic reproduction ratio number (R_0) also determines the existence and stability of the equilibrium point and can control the rate of spread of HIV/AIDS. Based on the simulation results, the parameter value that greatly influences population dynamics is the rate of treatment given to the Infected (I) sub population.
Aplikasi Metode Kendali LQR (Linier Quadratic Regulator) pada Sistem Suspensi Seperempat Mobil
Authors: Asfa'ani Ezhari , Sari Anisa Rizki , Hasibuan Lilis Harianti
Published: May 2024

This research discusses the design of the Linear Quadratic Regulator (LQR) control method for car suspension systems. The car suspension systems considered are limited to quarter car models. The dynamic equations of the quarter car system are derived by applying Newton's Second Law. Next, a suspension system without control is compared with a suspension system that has been given control. The uncontrolled quarter car suspension system has an eigenvalue of -1.3658 + 0.0000i; 0.9635 + 0.0000i; -0.0488 + 0.3156i and -0.0488 - 0.3156i which means the system is unstable. Meanwhile, the quarter car suspension system that has been given LQR control has an eigenvalue of -111.8113; -74.4464; -36.9243 and -14.0242 which means the system is asymptotically stable. Based on eigenvalue analysis and numerical simulation, LQR control can stabilize the quarter car suspension system.