bluuebunny/crossref_metadata_2025 huggingface dataset:
Stress generation, relaxation and size control in confined tumor growth
Authors: Yan Huaming , Ramirez-Guerrero Daniel , Lowengrub John , Wu Min
Published: December 2021

Experiments on tumor spheroids have shown that compressive stress from their environment can reversibly decrease tumor expansion rates and final sizes. Stress release experiments show that nonuniform anisotropic elastic stresses can be distributed throughout. The elastic stresses are maintained by structural proteins and adhesive molecules, and can be actively relaxed by a variety of biophysical processes. In this paper, we present a new continuum model to investigate how the growth-induced elastic stresses and active stress relaxation, in conjunction with cell size control feedback machinery, regulate the cell density and stress distributions within growing tumors as well as the tumor sizes in the presence of external physical confinement and gradients of growth-promoting chemical fields. We introduce an adaptive reference map that relates the current position with the reference position but adapts to the current position in the Eulerian frame (lab coordinates) via relaxation. This type of stress relaxation is similar to but simpler than the classical Maxwell model of viscoelasticity in its formulation. By fitting the model to experimental data from two independent studies of tumor spheroid growth and their cell density distributions, treating the tumors as incompressible, neo-Hookean elastic materials, we find that the rates of stress relaxation of tumor tissues can be comparable to volumetric growth rates. Our study provides insight on how the biophysical properties of the tumor and host microenvironment, mechanical feedback control and diffusion-limited differential growth act in concert to regulate spatial patterns of stress and growth. When the tumor is stiffer than the host, our model predicts tumors are more able to change their size and mechanical state autonomously, which may help to explain why increased tumor stiffness is an established hallmark of malignant tumors.
Belly fat or bloating? New insights into the physical appearance of St Anthony of Padua
Authors: Mongillo Jessica , Vescovo Giulia , Bramanti Barbara
Published: December 2021

Over the centuries, iconographic representations of St Anthony of Padua, one of the most revered saints in the Catholic world, have been inspired by literary sources, which described the Saint as either naturally corpulent or with a swollen abdomen due to dropsy (i.e. fluid accumulation in the body cavities). Even recent attempts to reconstruct the face of the Saint have yielded discordant results regarding his outward appearance. To address questions about the real appearance of St Anthony, we applied body mass estimation equations to the osteometric measurements taken in 1981, during the public recognition of the Saint’s skeletal remains. Both the biomechanical and the morphometric approach were employed to solve some intrinsic limitations in the equations for body mass estimation from skeletal remains. The estimated body mass was used to assess the physique of the Saint with the body mass index. The outcomes of this investigation reveal interesting information about the body type of the Saint throughout his lifetime.
Adopting a multidisciplinary telemedicine intervention for fall prevention in Parkinson’s disease. Protocol for a longitudinal, randomized clinical trial
Authors: Cubo Esther , Garcia-Bustillo Alvaro , Arnaiz-Gonzalez Alvar , Ramirez-Sanz Jose Miguel , Garrido-Labrador Jose Luis , Valiñas Florita , Allende Marta , Gonzalez-Bernal Jeronimo Javier , Gonzalez-Santos Josefa , Diez-Pastor José Francisco , Jahouh Maha , Arribas Jana , Trejo Jose
Published: December 2021

Background

Approximately 40–70% of people with Parkinson’s disease (PD) fall each year, causing decreased activity levels and quality of life. Current fall-prevention strategies include the use of pharmacological and non-pharmacological therapies. To increase the accessibility of this vulnerable population, we developed a multidisciplinary telemedicine program using an Information and Communication Technology (ICT) platform. We hypothesized that the risk for falling in PD would decrease among participants receiving a multidisciplinary telemedicine intervention program added to standard office-based neurological care.

Objective

To determine the feasibility and cost-effectiveness of a multidisciplinary telemedicine intervention to decrease the incidence of falls in patients with PD.

Methods

Ongoing, longitudinal, randomized, single-blinded, case-control, clinical trial. We will include 76 non-demented patients with idiopathic PD with a high risk of falling and limited access to multidisciplinary care. The intervention group (n = 38) will receive multidisciplinary remote care in addition to standard medical care, and the control group (n = 38) standard medical care only. Nutrition, sarcopenia and frailty status, motor, non-motor symptoms, health-related quality of life, caregiver burden, falls, balance and gait disturbances, direct and non-medical costs will be assessed using validated rating scales.

Results

This study will provide a cost-effectiveness assessment of multidisciplinary telemedicine intervention for fall reduction in PD, in addition to standard neurological medical care.

Conclusion

In this challenging initiative, we will determine whether a multidisciplinary telemedicine intervention program can reduce falls, as an alternative intervention option for PD patients with restricted access to multidisciplinary care.

Trial registration

ClinicalTrials.gov Identifier: NCT04694443.
A comparison of two population-based household surveys in Uganda for assessment of violence against youth
Authors: Currie Dustin W. , Apondi Rose , West Christine A. , Biraro Samuel , Wasula Lydia N. , Patel Pragna , Hegle Jennifer , Howard Ashleigh , Benevides de Barros Regina , Durant Tonji , Chiang Laura F. , Voetsch Andrew C. , Massetti Greta M.
Published: December 2021

Violence is associated with health-risk behaviors, potentially contributing to gender-related HIV incidence disparities in sub-Saharan Africa. Previous research has demonstrated that violence, gender, and HIV are linked via complex mechanisms that may be direct, such as through forced sex, or indirect, such as an inability to negotiate safe sex. Accurately estimating violence prevalence and its association with HIV is critical in monitoring programmatic efforts to reduce both violence and HIV. We compared prevalence estimates of violence in youth aged 15–24 years from two Ugandan population-based cross-sectional household surveys (Uganda Violence Against Children Survey 2015 [VACS] and Uganda Population-based HIV Impact Assessment 2016–2017 [UPHIA]), stratified by gender. UPHIA violence estimates were consistently lower than VACS estimates, including lifetime physical violence, recent intimate partner physical violence, and lifetime sexual violence, likely reflecting underestimation of violence in UPHIA. Multiple factors likely contributed to these differences, including the survey objectives, interviewer training, and questionnaire structure. VACS may be better suited to estimate distal determinants of HIV acquisition for youth (including experience of violence) than UPHIA, which is crucial for monitoring progress toward HIV epidemic control.
‘It is a disease which comes and kills directly’: What refugees know about COVID-19 and key influences of compliance with preventive measures
Authors: Lusambili Adelaide M. , Martini Michela , Abdirahaman Faiza , Abena Asante , Guni Joseph N. , Ochieng Sharon , Luchters Stanley
Published: December 2021

Background

Refugees are at increased risk for COVID-19 infection in part due to their living conditions, which make it harder to adopt and adhere to widely accepted preventive measures. Little empirical evidence exists about what refugees know about COVID-19 and what they do to prevent infection. This study explored what refugee women and their health care workers understand about COVID-19 prevention, the extent of their compliance to public health recommendations, and what influences the adoption of these measures.

Methods

In October 2020, we conducted 25 in-depth interviews with facility and community health care staff (n = 10) and refugee women attending antenatal and postnatal care services (n = 15) in Eastleigh, Nairobi.

Findings

While researchers found a high level of awareness about COVID-19 and related prevention and control measures among refugee women, various barriers affected compliance with such measures, due in part to poverty and in part to rampant misconceptions informed by religious beliefs and political narratives about the virus.

Conclusions

These findings indicated that Kenya’s Ministry of Health needs to institute a concerted and continuous education program to bring refugee communities up to speed about COVID-19 and its prevention. In addition to disseminating information about the need to wear masks and repeatedly wash hands, supplies—masks, soap and access to water—need to be made available to poor refugee communities. Future research could explore which measures for disseminating factual information work best in refugee populations with different cultural norms and how best to target interventions to these groups.
Primer extension coupled with fragment analysis for rapid and quantitative evaluation of 5.8S rRNA isoforms
Authors: Venturi Giulia , Zacchini Federico , Vaccari Cinzia Lucia , Trerè Davide , Montanaro Lorenzo
Published: December 2021

The ribosomal RNA 5.8S is one of the four rRNAs that constitute ribosomes. In human cells, like in all eukaryotes, it derives from the extensive processing of a long precursor containing the sequence of 18S, 5.8S and 28S rRNAs. It has been confirmed also in human cells the presence of three isoforms of 5.8S rRNA: one more abundant called 5.8S short, one called 5.8S long bearing 5 extra-nucleotides at its 5’ end and one 10 nucleotide shorter called 5.8S cropped. So far, little is known about 5.8S long specific role in cell biology and its function in human pathology. The lack of studies on the three 5.8S isoforms could be due to the techniques usually applied to study ribosome biogenesis, such as Northern blot with radioactively labelled probes, that require strict protective measures, and abundant and high-quality samples. To overcome this issue, we optimized a method that combines primer extension with a fluorescently labeled reverse primer designed on the 3’ of 5.8S rRNA sequence and fragment analysis. The resulting electropherogram shows the peaks corresponding to the three isoforms of 5.8S rRNA. The estimation of the area underneath the peaks allows to directly quantify the isoforms and to express their relative abundance. The relative abundance of 5.8S long and 5.8S short remains constant using scalar dilution of RNA and in samples subjected to partial degradation. 5.8S cropped abundance varies significantly in lower concentrate RNA samples. This method allows to analyze rapidly and safely the abundance of 5.8S rRNA isoforms in samples that have been so far considered not suitable such as poorly concentrated samples, RNA derived from frozen tissue or unique samples.
Drawings or 3D models: Do illustration methods matter when assessing perceived body size and body dissatisfaction?
Authors: Sob Cynthia , Giacone Luana , Staub Kaspar , Bender Nicole , Siegrist Michael , Hartmann Christina
Published: December 2021

Research has reported that both men and women experience body dissatisfaction. Among other instruments, a widely used method to assess perceived body size and body dissatisfaction are figure rating scales. Although a variety of illustration methods (e.g., three-dimensional, or 3D, models and line-drawing models) have been used to create these figure rating scales, to date, they have not been directly compared to one another. Thus, in the first study, which includes 511 participants at a mean age of 46 years old (range: 20–70), the present research work aims to assess how the line-drawing and 3D model scales, representing different body illustration methods, relate to each other. Furthermore, the first study assesses the validity of the indication of body dissatisfaction measured using these figure rating scales by comparing them to body checking or scrutinizing behavior and body appreciation levels. The project’s second study examines the two figure rating scales using objectively measured anthropometric data. In total, 239 participants at a mean age of 54 years (range: 18–94) were included. The results show that figure rating scales can be considered tools that measure perceptual body image due to their positive correlations with body checking behavior (for women) and their negative correlations with body appreciation. The 3D model and line-drawing scales show good to excellent inter-scale reliability, and both scales agree equally well with body mass index (BMI) measurements. Thus, the 3D model and line-drawing scales both seem well suited for assessing perceived body size and perceptual body dissatisfaction, suggesting that neither illustration method is superior to the other.
Detailed analysis and comparison of different activity metrics
Authors: Maczák Bálint , Vadai Gergely , Dér András , Szendi István , Gingl Zoltán
Published: December 2021

Actigraphic measurements are an important part of research in different disciplines, yet the procedure of determining activity values is unexpectedly not standardized in the literature. Although the measured raw acceleration signal can be diversely processed, and then the activity values can be calculated by different activity calculation methods, the documentations of them are generally incomplete or vary by manufacturer. These numerous activity metrics may require different types of preprocessing of the acceleration signal. For example, digital filtering of the acceleration signals can have various parameters; moreover, both the filter and the activity metrics can also be applied per axis or on the magnitudes of the acceleration vector. Level crossing-based activity metrics also depend on threshold level values, yet the determination of their exact values is unclear as well. Due to the serious inconsistency of determining activity values, we created a detailed and comprehensive comparison of the different available activity calculation procedures because, up to the present, it was lacking in the literature. We assessed the different methods by analysing the triaxial acceleration signals measured during a 10-day movement of 42 subjects. We calculated 148 different activity signals for each subject’s movement using the combinations of various types of preprocessing and 7 different activity metrics applied on both axial and magnitude data. We determined the strength of the linear relationship between the metrics by correlation analysis, while we also examined the effects of the preprocessing steps. Moreover, we established that the standard deviation of the data series can be used as an appropriate, adaptive and generalized threshold level for the level intersection-based metrics. On the basis of these results, our work also serves as a general guide on how to proceed if one wants to determine activity from the raw acceleration data. All of the analysed raw acceleration signals are also publicly available.
Inoculando los valores de la Economía Social en las empresas convencionales
Authors: Sinde Oyarzabal Juan Manuel
Published: December 2021

Como es sabido la Economía Social se define en el estado español por criterios jurídicos. Forman parte de la misma la siguiente tipología de organizaciones: cooperativas, sociedades laborales, mutualidades, empresas de inserción, cofradías de pescadores y centros especiales de empleo.
Esta clasificación no coincide con la existente en otros países europeos, que, en ocasiones, no tiene una tipología jurídica sino que está caracterizada por una serie de valores diferenciales de las organizaciones que en ella se agrupan.
Con ese marco, vamos a tratar de buscar la aplicación de esos valores en las empresas convencionales, tratado de trascender los límites jurídicos para “inocularlos” en empresas que no forman parte del perímetro de la Economía Social, como forma de hacerlas no sólo más humanas sino también más competitivas en el escenario económico actual.
El trabajo se divide en los siguientes apartados.
1.-Introducción
2.-Los valores de la Economía Social
3.-Razones desde la competitividad para unas empresas más humanas
4.-Características del Modelo inclusivo participativo de empresa (MIPE) 5.-Algunas políticas públicas para su promoción y desarrollo
6.-Conclusiones
Advantages of Scar-Pattern Analysis in the Study of Paleolithic Сores.
Authors:   Institute of Archaeology and Ethnography SB RAS, A. Kharevich , K. Kolobova ,   Institute of Archaeology and Ethnography SB RAS, A. Krivoshapkin ,   Institute of Archaeology and Ethnography SB RAS
Published: December 2021

Scar-pattern or working step analysis is one of the main components of technological analysis. This analysis is usually applied to reconstruct the technological sequence of Middle and Upper Palaeolithic bifacial tools. In addition to bifacial implements, the scar-pattern analysis is applied to geometric microliths and to macro-implements made on large flakes, such as Quina scrapers. However, the potential of this analysis is much wider. Here we present the basic approaches and algorithm for the application of scar-pattern analysis to core analysis. The analysis algorithm includes five main research activities: determining the directions of all negatives, determining the mutual sequence of adjacent negatives, combining negatives into “technological units”, determining the mutual consistency of the groups of combined negatives and complicating of scheme. As an example, two carinated technological sequences in the Kulbulakian from Western Central Asia are provided. Scar-pattern analysis applied to reconstruct the technological sequences of the cores is devoid of the disadvantages inherent in this analysis applied to bifacial tools. We believe that scar-pattern analysis is the most promising in Paleolithic technological reconstructions. Keywords: scar-pattern analysis, working step analysis, cores, technology, knapping
Preservation and Use of Archaeological Heritage in West Siberia
Authors:   Institute of Archaeology and Ethnography of SB RAS, S. Tikhonov
Published: December 2021

Archaeological sites are the only source of information on the preliterate period in the history. In West Siberia and further to the east of the Ural mountains written sources appear only after arrival of Russians at the end of the 26th century. Therefore, the value of archaeological materials in studying of pre-Russian Siberia cannot be overestimated. Therefore, the effective system of protection and using of archaeological heritage of natives of Siberia is necessary. The special federal law is directed on it. However, in practice of archeologists there are nuances which the legislation does not regulate. This situation is analyzed by the author of article. First of all, this is due to the fact that it is advisable to excavate archaeological sites in those regions that have been most developed. This is due to both the significance of the sites, its accessibility, and the cost of archaeological work. Hundreds of interesting objects have been excavated, but the materials of many are unpublished, which hinders the growth of the available source base. However, the obligation to introduce the materials into scientific circulation in a timely manner is not imposed on researchers. I particularly note the inattention to the publications of organizations that conduct rescue and new-build archaeological work. The second aspect is related to the increasing attention of Russian citizens to antiquities, which they often find during trips. It is impossible to say how many such finds are eventually lost. The situation could be corrected by the interaction of the sites protection bodies, museum institutions and citizens. However, it happens that it is easier for citizen to throw away a find than to carry it to a cultural institution. This situation requires a legislative solution. Keywords: archaeological heritage, research, using, preservation, source
Nizhnyaya Sooru Settlement in Central Altai: Some Outcomes of the Study and Prospects for Further Research
Authors:   Altai State University, A. Tishkin , T. Hermes ,   Institut for the Study of Human History of the Max Planck Society for Scientific Research, S. Grushin ,   Altai State University
Published: December 2021

More than 150 years have passed since V.V Radlov began the first excavations to study the Afanasievo culture in the Altai. To date, mortuary complexes have provided the majority of cultural and biological material for the Afanasievo culture and have served as the basis for robust analyses and interpretations, even though their potential has not been fully exhausted. Critically, Afanasievo settlements have been very poorly studied. One of the most important reasons for this gap in our knowledge is the lack of surveys for occupational sites of communities in the Altai dating to the end of the 4th to the beginning of the 3rd millennium BCE. The available information on the Afanasievo culture gives hope that this research agenda will be eventually implemented. At the same time, it is important to bring existing results into the scientific literature and analyze available materials with modern methods. This article provides information about the Afanasievo settlement Nizhnyaya Sooru, which was discovered in the Karakol River Valley of the central Altai. In spite of the small scale of previous excavations, the findings attracted archaeological attention and have been described in several publications. Inspection of this settlement in 2019 and 2020 revealed that the cultural deposits were actively being destroyed by erosion. Here, we present our observations, photographs, and a topographic plan of the site, while outlining the prospects of future research at Nizhnyaya Sooru. Keywords: Altai, Afanasievo culture, Nizhnyaya Sooru, settlement, animal bones, ceramics, stone tools, radiocarbon dating, topographic plan
Disc Barrows (Hendges) of the Lower Don
Authors:   State Autonomous Cultural Institution of the Rostov Region “The Don Heritage”, A. Faifert
Published: December 2021

The disc barrows of Eurasia attract the attention of researchers due to the bright discoveries during the study of the famous Stonehenge. This paper is the first to publish data on the presence, location and features of disc barrows on the Lower Don. Several sites have been partially or completely excavated. The poverty or lack of finds showed that the disc barrows should be preserved for future generations of researchers. For the Semikarakorsk complex of four objects, their location is close to the latitudinal and meridional. This indicates with a high degree of probability, that they are used to determine the key dates of the annual cycle. The wide distribution of ring ditch-sanctuaries of the Early Iron Age in the steppe territory of Eastern Europe is described. Keywords: the Lower Don, disc barrows, henge, sanctuary, archeoastronomy, relief, steppe
Microblade Percussion in the Upper Paleolithic of Mongolia: on the Problem of Origin and Distribution Within Central Asia and the Far East
Authors:   Institute of Archaeology and Ethnography SB RAS, A. Tabarev , S. Gladyshev ,   Institute of Archaeology and Ethnography SB RAS
Published: December 2021

The focus of this investigation is on the technology of micro-percussion in the Upper Paleolithic of Mongolia. Micro-percussion is defined as the entire assemblage of lithic artifacts associated with the production of microblades. The complexes analyzed here include microcores and microblades, but not tools made of them. Until recently, microblade percussion has never been considered a distinct trend emergent in the lithic technology of the Early Upper Paleolithic of Mongolia. In this paper, based upon lithic materials from northern Mongolia and the Gobi Altai, we prove the existence of microblade percussion at the early stages of the Upper Paleolithic (37–26 000 BP) and persisting until the very beginning of the Holocene (11–10 500 BP). In other words, this is crosscutting technology for the region. We conclude that in the Early Upper Paleolithic complexes of northern Mongolia, preferential reduction initially emphasized narrow-front and, later, wedgeshaped microcore production. Analysis of materials from the Final Paleolithic and the Early Holocene horizons at the Tolbor-15 site, along with representative surface collections and GIS modeling of site location patterns along tributaries of the Selenga River, allow us to formulate a series of hypotheses regarding the origin of the wedge-shaped flaking technique in northern Mongolia and the dynamics and directionality of its diffusion. The microblade technique observable in the Final Paleolithic of northern Mongolia exhibits more similarities with lithic complexes known archaeologically to the south (Inner Mongolia) and east (Russian Far East, Korean Peninsula, and Japanese Archipelago), not with the Russian Trans-Baikal region. Keywords: Mongolia, Central Asia, Far East, Upper Paleolithic, microblade percussion
The Effect of Mouthrinses on Surface Roughness of Two Nanohybrid Resin Composites
Authors: Yilmaz Emre , Mujdeci Arzu
Published: December 2021

Objective: The aim of this study was to evaluate the effect of four different mouthrinses on the surface roughness of two nanohybrid resin composites. Material and Methods: Fifty samples were prepared for each of the resin composites (2x8 mm) and a profilometer was used to determine the initial surface roughness (Ra) of each sample. Then, they were divided into 5 subgroups (n= 10), and exposed to the following mouthrinses (12h, 37 ºC): containing alcohol and essential oils; alcohol and chlorhexidine; alcohol-free and essential oils; alcohol free and cetil prydinium chlorite; or distilled water (control). The surface roughness of each sample was measured again. Statistical analyses of the data were performed via two-way ANOVA and Bonferroni tests. Results: Overall, statistically significant differences were not found between the resin composites (p> 0.05), but significant differences were found among the mouthrinses (p< 0.05). Interactions between the mouthrinses and the resin composites was statistically significant (p< 0.05). Both of the resin composites had the highest surface roughness after exposure to mouthrinse with alcohol and essential oils (p< 0.05), followed by mouthrinse with alcohol and chlorhexidine. Both alcohol-free mouthrinses caused surface roughness either similar to distilled water (p> 0.05) or lower than distilled water (p< 0.05) on the nanohybrid resin composites used. Conclusion: The mouthrinses affected the surface roughness of the resin composites in different ways. This was dependent on mouthrinse contents and the chemical structure of the resin composites. Alcohol-containing mouthrinses caused the most changes in the surface roughness of both resin composites.
Keywords
Alcohol; Chlorhexidine; Composite resin; Essential oil; Roughness.
Urgencia de una filosofía económica para la transición digital
Authors: Sánchez Bayón Antonio
Published: December 2021

Estudio de revisión crítica de los fundamentos del dominante pensamiento económico anglosajón durante la economía de bienestar estatal, y su incapacidad para afrontar de manera humanista la economía digital por falta de una auténtica filosofía económica de sustento. Se realizan revelaciones sobre el intervencionismo económico y sus fallos conceptuales macroeconómicos y econométricos, a la vez que se exponen los novedosos planteamientos de la economía de bienestar personal, como ulterior estadio de la economía digital, que comprende emprendimiento, intensificación tecnológica y gestión de la felicidad y talento (con manifestaciones como RSC 3.0, salario emocional, clima laboral y satisfacción, motivación, gamificación, etc.).
Das Team in der Neurorehabilitation
Authors: Mokrusch T.
Published: December 2021

Neurological rehabilitation is rehabilitative therapy that is concerned with neurological patients in a multi-professional team under the leadership of a physician. The members of this interdisciplinary team work together closely with an intense exchange of knowledge and competence. This primary treatment team includes specialists in neuropsychology, speech therapy, occupational therapy and physiotherapy (including physical therapy), along with social workers and co-therapeutic nursing. Other forms of therapy may also be included. A secondary team is defined by the cooperation of the neurologist with other medical fields, e.g., neurosurgery, geriatrics, psychiatry, orthopedics and neuropediatrics. A tertiary team exists in the form of organizational cooperation between the medical und economic clinic management with insurance companies and political decision makers. Every kind of rehabilitation is basically multi-professional from an organizational viewpoint, and it is performed interdisciplinarily applying the methods of all therapeutic disciplines to create synergies. This particularly applies to neurorehabilitation, as in this field – generally following a disease or an injury to the brain as the central regulation organ – several different disorders occur in combination: sensorimotor symptoms and signs like paralysis, spasticity, dysphagia and loss of coordination; cognitive or speech disorders; or finally psychological alterations like depression or anxiety. Therefore it is particularly important that the professional team members match and coordinate their therapeutic procedures to reach common rehabilitative goals. »Multi-professional« in this context means that the representatives of the different therapeutic fields work with the patient on an advanced competency level, and »interdisciplinary« means that the members of the team work together closely with thorough cross-consultation between their disciplines. Transdisciplinary cooperation represents the highest level of team competency and includes regularly adopting the tasks and therapeutic procedures from other disciplines. All kinds of cooperation are performed under the supervision of a physician who assumes full responsibility for the rehabilitative therapy, including the prescription of medication and introduction of acute interventions, e.g., surgical procedures. This paper is only concerned with the primary – therapeutic – team. The secondary and tertiary forms of team cooperation are planned to be published separately.
Faktor-Faktor yang Berhubungan dengan Kejadian Kecelakaan Kerja di Laboratorium Pendidikan
Authors: Cahyaningrum Dwi , Muktiana Sari Hanif Tegar , Iswandari Dini
Published: December 2021

Laboratory occupational safety is an action to prevent the occurrence of accident in laboratory environment caused by design, system, process and activities in laboratory. Laboratory with all desain and activities have a potencial hazard of accident. This study aimed to know factors related with the incident of accident in education laboratory. This is a cross sectional study with quantitative approach. Primary data was collected using questionnaire to 30 student in the last semester. Data were analyzed using chi square test at significance level at 0,05.  The result show that the most accident occurred in laboratory are contact with the hot object, exposed to chemical spills, and also asphyxiation.  The results  also show that there is no related between the application of standart operated procedure and the knowledge level of student with the incident of occupational accident, and there is a relation between the use of personal protective equipment with the incident of occupational accident in education laboratory
Identifikasi Bahaya dan Risk Assessment: Penerapan Keselamatan dan Kesehatan Kerja di Laboratorium
Authors: Indarwati Desy
Published: December 2021

Risk Assessment is systematic way of carrying out activities in laboratory, identifying the potential emergence of hazards and other worst possibility, and also the decisions to control and prevent the accidents. This research is a qualitative descriptive research with a case study method.  Data obtained through observation, interview, and study documents at Laboratory of Tarbiyah Faculty UIN Sunan Ampel Surabaya. The purpose of this study is to provide an understanding for laboratory users about the importance of implementing occupational safety and health in the laboratory. The result show that there were 14 potential hazards that arose which were divided into four variables, they are handling and storage of materials, design of workshop/laboratory, Facilities, and activities in laboratory. Risk assessment result of 14 potential hazards found that, 43% are low risk, 14% are moderate risk, 43% are high risk, and 0% are extreme risk. The effort to implementing occupational health and safety (K3) have not been fully carried out optimally. To control or push down the potential of hazards are (1) Arranging SOP for implementation of K3, (2) provide Material Safety Data Sheet (MSDS), (3) maximize utilization of personal protective equipment, (4) provide enough first aid and eyewash, (5) provide fire extinguishers (APAR).
Leveraging asynchronous speaking tasks to promote willingness and confidence to speak in Spanish: A qualitative study
Authors: Jaramillo Nadia
Published: December 2021

This study describes the experiences of students in a flipped intermediate Spanish college class who used a video discussion digital tool to develop their confidence to speak in the foreign language. Students participated in a series of 10 speaking tasks designed based on the framework on technology-mediated tasks (Gonzalez-Lloret & Ortega, 2014) and the world-readiness standards for communicative performance of the American Council on the Teaching of Foreign Languages (2015). Through semi-structured interviews and reflection journals, students shared their learning accomplishments, unveiled their inner fears in speaking skills and detailed their journey in gaining confidence to speak in Spanish. Their experiences showed that willingness to communicate and self-efficacy are driving forces that, fostered in a brave learning environment, enable students to take risks and be creative with the language. The study also presents pedagogical implications regarding the design of technology-mediated tasks and the conditions of the learning environment that can foster or hinder students’ language oral communicative skills.
Implications for practice or policy:

Technology-mediated tasks should be designed based on a learner-centred approach and the affordances of the tool to promote communicative competence in foreign and second language learning.
Technology-mediated tasks can promote the development of confidence to use the foreign and second language more spontaneously, while allowing students to fail without being judged or penalised.
Technology-mediated tasks can give students some control over their own learning process, facilitating opportunities for self-monitoring to gain confidence in speaking in the foreign or second language.
Kultura strachu
Authors: Puppel Stanisław , Puppel Joanna
Published: December 2021

The ‘culture of fear’ constitutes an important environment for mankind. It is an interplay of biological, socio-cultural and linguistic dimensions which, in fact, underlie human existence. The dominance of one subtype of culture with respect to fear, the dystopian culture, pulls mankind into a culture of aggression, competitiveness and intolerance (or into the win-lose perspective). On the other hand, eutopian culture pulls mankind into a culture of non-aggression, cooperation, tolerance and inclusiveness (or into the win-win perspective). In fact, one may easily envisage that a well-functioning human society should remain in a state of balance between the two types of culture and it is the dystopian type of culture that should be kept in check, while the eutopian culture should be favoured if the earth as the carrier of all life, the existing biodiversity, and humanity, are to be sustained.
Nauka języków obcych uczniów z dysfunkcją słuchu
Authors: Skowronek Barbara
Published: December 2021

Hearing impaired people have serious communication problems: both with (full) understanding of reality and with learning the first language. In order to counteract communication exclusion, they compensate for the deficiencies with an increased use of other senses. They learn the first language consciously with the help of a speech therapist, compensating for hearing dysfunctions, e.g. wide-angle vision. Karpińska-Szaj calls such learning inclusive; they can be successfully used in teaching foreign languages.
Effects of oral stimulation with breast milk in preterm infants oral feeding: a randomized clinical trial
Authors: Le Qiong , Zheng Sheng-hua , Zhang Lan , Wu Li-fen , Zhou Feng-juan , Kang Min , Lu Cai-hong
Published: December 2021

Objectives

This study was performed to evaluate the effect of oral stimulation with breast milk for preterm infants.

Methods

A total of 68 subjects form neonatal intensive care unit were randomly assigned into control group (n=20), premature infant oral motor intervention (PIOMI) group (n=25) and premature infant oral motor intervention with breast milk (BM-PIOMI) group (n=23).

Results

BM-PIOMI group had significant shorter initiation of oral feeding (IOF) time compared to PIOMI group (2.95 days, 95% CI [0.42–5.48]) or control group (9.79 days, 95% CI [7.07–12.51]). BM-PIOMI group had significant sooner transition time from IOF to full oral feeding (FOF) compared to control group (6.68 days, 95% CI [2.2–11.16]), but not to PIOMI group (2.09 days, 95% CI [−2.07 to 6.25]). Length of hospital stay (LOS) did not show statistical different between three groups (control 38.85 ± 14.40 vs. PIOMI 38.48 ± 11.76 vs. BM-PIOMI 38.04 ± 12.2). Growth mixture model identified improvement in non-nutritive sucking (NNS) score in BM-PIOMI group compared to control and PIOMI group (0.8293, p<0.0001, and 0.8296, p<0.0001, respectively).

Conclusions

Oral stimulation with breast milk can better promotes the oral feeding process of premature infants than the simple oral stimulation, by shorten IOF time and improve early NNS score, but does not shorten transition time from IOF to FOF and LOS.
On Z-Symmetric Rings
Authors: Chaturvedi Avanish Kumar , Kumar Nirbhay , Shum K. P.
Published: December 2021

We introduce the concept of Z-symmetric rings. In fact, the classes of all semicommutative rings, nil rings, reduced rings, Artinian rings and eversible rings are Z-symmetric rings. In order to sustain our assertion, we provide a number of examples of Z-symmetric and non Z-symmetric rings. We observe that the class of Z-symmetric rings lies strictly between the classes of eversible rings and the Dedekind finite rings. In particular, we consider the extensions of Z-symmetric rings. Finally, some new results between the Z-symmetric rings and Armendariz rings will be explored and investigated.
Pellian equations of special type
Authors: Bokun Mirela Jukić , Soldo Ivan
Published: December 2021

In this paper, we consider the solvability of the Pellian equation

x
2

−
(

d
2

+
1
)

y
2

=
−
m
,

$$\begin{array}{}
\displaystyle x^2-(d^2+1)y^2 = -m,
\end{array} $$

in cases d = nk
, m = n
2l−1, where k, l are positive integers, n is a composite positive integer and d = pq, m = pq
2, p, q are primes. We use the obtained results to prove results on the extendibility of some D(−1)-pairs to quadruples in the ring

Z

[

−
t

]

$\begin{array}{}
{\mathbb{Z}}[\sqrt{-t}]
\end{array} $

, with t > 0.
Uranium sorption from waste solutions by Talc Phosphogypsum ferri-silicate synthetic new sorbent
Authors: Hagag Mohammed S. , Esmaeel Shaimaa M. , Salem Fatma , Zaki Salah A. , Ali Amr H.
Published: December 2021

In this investigation, a synthetic Talc Phosphogypsum ferri-silicate TPFS sorbent was prepared by thermal activation then evaluated the uranium ions removal from sulfate waste solution containing uranium. Generally, the synthetic adsorbents from raw and waste materials have a significant attention from scientists because the environmental concern and economic development, particularly, the uranium elimination from radioactive waste solutions. The uranium removal percentage and loading capacity were determined by optimization the conditions of adsorption such as the pH range, adsorbent/adsorbate ratio, uranium concentration of radioactive waste solutions, equilibrium time and temperature. The resultant adsorption efficiency and loading capacity were 87.2% and 375 mg g−1, respectively. The adsorption isothermally was in accordance with Langmuir isotherm model, in addition pseudo-second-order kinetic model, with theoretical capacity of 384.6 and 333 mg g−1, respectively. Uranium (VI) adsorption on TPFS was inhibited at elevated temperatures. The removal of uranium from sulfate waste solution by TPES sorbent according to the thermodynamic functions values was exothermic (∆H of −16.095) and non-spontaneous in nature (∆G of −17.27 at 303 K). In addition, there was a decrease in the randomness at the TPFS/uranium waste solution interface with ∆S value of 3.88.
Estimation of value at risk for stock prices in mobile phone industry
Authors: Shin Yie Dr. Wendy Ling , Chan Kah Yi , Lim Fong Peng
Published: December 2021

Risk management and market losses prediction played a vital role in the financial sector. Value-at-Risk (VaR) is one of the effective measures for financial risk management. This research studies three mobile phone companies which are Apple Inc, Google Inc and Microsoft Corporation. The stocks of these companies are listed under the National Association of Securities Dealers Automated Quotations stock exchange (NASDAQ). The Value-at-Risk is evaluated by using two non-parametric methods and four parametric methods. Two non-parametric methods used are the basic historical method and age-weighted historical method, while the four parametric methods are normal distribution, student’s t-distribution, generalized extreme value distribution, and variance gamma distribution. Shapiro-Wilk normality test indicates that the return series of the selected companies are not normally distributed. This study found that, at 95% confidence level, the risks of the selected stocks are different for each method, and the stock of Microsoft Corporation is the least risky stock as it gives the lowest VaR. Through the conditional coverage test, this study founds that the age-weighted historical method overestimated the VaR. In addition, this study also concludes that the basic historical method, generalized extreme value distribution and variance gamma distribution are superior to other methods in the backtesting procedure.
The Classification of Taekwondo Kicks Via Machine Learning: A feature selection investigation
Authors: Mass Duki Muhammad Syafi’i , Shapiee Muhammad Nur Aiman , Abdullah Muhammad Amirul , Khairuddin Ismail Mohd , Mohd Razman Mohd Azraai , P. P. Abdul Majeed Anwar
Published: December 2021

Martial art strike classification by machine learning has drawn more attention over the past decade. The unique signal from each technique makes it harder to be recognized. Thus, this paper proposed an SVM, Random Forest, k-NN, and Naïve Bayes classification method applied to the time-domain signal to classify the three type of taekwondo technique. Data collected from the total of five participant and statistical features such as mean, median, minimum, maximum, standard deviation, variance, skewness, kurtosis, and standard error mean were extracted from the signal. After that, the data will be trained using selected rank features and hold-out method with k-fold cross-validation applied to the training and testing data. Therefore, with ANOVA test as features selection and 60:40 ratio of a hold-out method, Random Forest classifier score the highest accuracy of 86.7%..
Classification of Plant Health (Capsicum Frutescens) Normalize Differences Vegetation Index using Image Processing
Authors: Mohd Rudin Nurin Awanis , Suhaimi Puteh Suhaimi , Mat Jizat Jessnor Arif , Mohd Khairuddin Ismail , P. P. Abdul Majeed Anwar , Mohd Razman Mohd Azraai
Published: December 2021

The evolution of food manufacturer in global contribute in national income of the country. Agriculture has been a part of everyone’s life which result in providing food become the building block of every human being. Malaysia is only country experiencing deteriorating development contribute (25.9%) agriculture in Gross Deficient Domestics Product (GDP) while others are fishing (12%), rubber (3.0%) and forestry & logging (6.3%), livestock (15.3%). In line with the development of technology in present century, a lot of methods and technique introduced to upgrowth agriculture sector by focusing to the plant health. The aims of this study are to classify of agriculture plant health through NDVI using image processing. Image processing is a technique representing operations and observation on an image. The images of plant will be captured in this investigation to obtain a photo without (Infra-Red) IR imaging filter. Some of steps must be perform which also include of using multi-function software to gain NDVI values of plant. The main objective in this study is to classify plant health by performing the vegetation index of plant and identify the best machine learning to be applied.
Effects of Health Education on Hygienic Self-Care Practices among Female Adolescent
Authors: Wirata Resta Betaliani , Ballena Naressia S
Published: December 2021

Background: As an older child enters the stage of adolescence, several changes happen within the human body, particularly female adolescents. The researcher as a Nurse educator realized the need to include health education on hygienic self-care practices in the subjects to be taught in Junior High School. The study aimed to determine the effect of health education on the hygienic self-care practices among adolescentsâ€™ female junior high school in Yogyakarta City, Indonesia.

Methods: This study used quantitative design utilized pre-experimental with one group pretest-posttest design. The researcher used health education on the hygienic self-care practices module as the intervention and self-made questionnaire as the instrument.

Results: Data shows a mean score on the before health education which is 2.96 had increased after health education to a mean score of 3.68.  There is a mean difference of 0.72 and a p-value of 0.000 in between the scores which indicates a significant result. The proposed health education program developed by the researcher needs to be implemented in the participating schools.

Conclusion: The role in the collaboration of the school nurses and teachers are needed to the success of a health education program to their students who are in the stage of adolescence.
Digitale Plattformen
Authors: Wirtz Bernd W. , Langer Paul F.
Published: December 2021

Digitale Plattformen haben die Wettbewerbslandschaft in den letzten Jahren erheblich verändert. Trotz der Unterschiede zwischen den diversen Plattformanbietern gibt es wesentliche Gemeinsamkeiten in ihren Geschäftsmodellen und ihren strategischen Ansätzen. Plattformen bieten Nutzern heute einen zentralen Zugang zum Markt und schaffen damit eine wichtige Grundlage für viele Unternehmen. Dieser Beitrag behandelt die ökonomischen Mechanismen des Plattform-Geschäftsmodells und zeigt auf, wie einige Plattformbetreiber zu dominanten Marktkräften wurden.
Fehlende Zahlungsbereitschaft für einen Emissionsausgleich im Luftverkehr
Authors: Neumann Michael , Vögele Carin
Published: December 2021

Consumer Social Responsibility lässt eine freiwillige CO2-Kompensation von Fluggästen erwarten. Dieser Beitrag untersucht anhand von Daten aus einer Onlinebefragung in Deutschland die Zahlungsbereitschaft hierfür. Die Ergebnisse belegen, dass eine Unkenntnis über die Möglichkeiten der Kompensation, asymmetrische Informationen mit Mängeln in der Transparenz und eine unzureichende Glaubwürdigkeit der Kompensationsangebote die Befragten in ihrer Zahlungsbereitschaft negativ beeinflussen. Infolge einer Adversen Selektion wird die Verantwortungsübernahme der Fluggäste unterbunden.