bluuebunny/crossref_metadata_2025 huggingface dataset:
EVALUATION OF AESTHETIC RESTORATIONS PREPARED BY UNDERGRADUATE STUDENTS ON TYPODONT MODELS
Authors: Dina ERDİLEK Ayşe , ŞAHİN Merve , GÜRAY EFES Begüm
Published: April 2022

The dental school curriculum is based on theoretical and practical courses. Before real patients, students practice on secure environments like typodonts or simulators to manage the functional and aesthetic properties of tooth restorations. This study aimed to evaluate the quality of class IV aesthetic restorations prepared by undergraduate dental students across different years of training, in terms of surface gloss, anatomic form, marginal adaptation, and proximal contact. Four consecutive classes of dental students (n = 15) were tasked with restoring a class IV cavity on a typodont tooth. Restorations were performed using a universal adhesive and nanohybrid resin composite. Evaluations were performed using the modified FDI criteria. Data were statistically analyzed by Kruskal–Wallis one-way analysis of variance, along with a t-test. The FDI scores for restorations by second-, fourth-, and fifth-year dental students were not significantly different. Third-year students had less success than others only in terms of incisal marginal adaptation. Forty-seven of the 60 (78.3%) restorations were clinically sufficient in all of the evaluated criteria. There were no statistically significant differences between the restorations performed by female and male students. The two-year preclinical training along with theoretical and practical education is sufficient for students to acquire basic restorative skills needed in clinical practice.
CLINICAL FACTORS PREDICTING RESPONSE TO REGORAFENIB IN METASTATIC COLORECTAL CANCER
Authors: Nuray Sever Özlem , Aktaş Gökmen , Aksoy Başar , Yıldırım Mustafa
Published: April 2022

Colorectal cancer (CRC) is a common disease with high mortality. Regorafenib (Stivarga ®) is an oral small molecule, multiple kinase inhibitor approved worldwide for use in metastatic colorectal cancer. In our study, clinical factors predicting response to regorafenib were investigated. Patients who applied to Gaziantep Medical Park Hospital and Sanko University Medical Faculty Hospital Medical Oncology outpatient clinic between 2010-2021 with the diagnosis of mCRC and using regorafenib were included in the study. Electronic medical records of the patients were reviewed retrospectively. Statistical analyzes were performed using SPSS version 15.0 software. A total of 20 patients with metastatic colorectal cancer using regorafenib in the third or fourth line therapy were included in the study. Overall, 15 (75%) patients had liver metastases. The median overall survival of the patients was 25.5 months (95% Confidence Interval (CI), 24.1-26.8). Overall survival was not significantly associated with sex, ECOG performance status score, de novo metastatic disease status, smoking status and weight loss history (p=0.139, p=0.240, p=0.173, p=0.911, p=0.923, respectively). A significant association was found between the presence of liver metastasis and survival (p=0.036). The median overall survival was 40.3 months (95% CI, 0-92.6) in patients without liver metastases, and 25 months (95% CI: 13.8-36.2) in patients with liver metastases. In this retrospective study investigating the factors affecting the survival of patients using regorafenib with the diagnosis of mCRC, the presence of liver metastasis was found to be associated with a poor prognosis.
ON THE APPROXIMATION WITH AN IBRAGIMOV-GADJIEV TYPE OPERATOR
Authors: BOZMA Gürel , BARS Esat
Published: April 2022

This work is a study examining the approximation properties of an Ibragimov-Gadjiev type operator, which contains important visual and numerical information in the field of operator theory, which is one of the applied areas of mathematics. Approximation theory; it is based on approaching difficult and complex functions with simpler and workable functions whose properties are known. In this sense, many operators have been defined and found a place in different fields of mathematics and in solving the problems of daily life. For example, Bernstein operators are used to create a simulation of blood pressure. Contrary to the classical Ibragimov-Gadjiev operator, where derivative properties should be used, important properties of the operator are obtained by using the properties of the continuous functions and the sum formula. The described operator is a tool that researchers can use for applied studies on daily life. This operator, which is used to approximate the functions defined on C[0,A] in the literature; It has been generalized to provide suitable properties for test functions by making the bounded depends on the variable. Then, a kernel function for the operator is determined by providing the necessary properties to obtain the smooth convergence of each function in the space.Then, the speed of approach was calculated with the help of the modulus of continuity.The results obtained with graphics and tables are given in practice.
INTRODUCING ECOLOGICAL ISLAMIC BOARDING SCHOOL
Authors: Maula Inayatul , Febry Agung Is Hardiyana , Junaidi
Published: April 2022

AbstractThe idea of ecological boarding school is actually not a new idea in the  of Islamic boarding school. Islamic boarding schools as the oldest educational institutions in Indonesia are already familiar with ecological studies, both in the fields of interpretation of the Qur'an, Hadith, Fiqh, and the yellow book which become the basis of their knowledge. However, it is still theoretical and has not yet fully implemented. This study uses library research in the form of searching the latest books, books and journals. This paper concludes that it is time for Islamic boarding schools to transform their scientific treasures, especially those related to ecology, into a real movement. Islamic boarding schools must return to their identity as agents of social change by utilizing the scientific treasures, their community and human resources they have by creating ecological boarding schools.
Pendekatan Kewirausahaan Untuk Pengembangan Lembaga Ekonomi Dan Penunjang Ekowisata Di Bali
Authors: SARA I Made
Published: April 2022

Pencapaian ekonomi mengubah banyak cara dalam menyikapi hidup dan memecahkan masalah sosial dan bisnis serta kesuksesan.  Kemiskinan dan kesejahteraan merupakan masalah ekonomi yang dihadapi oleh semua daerah. Kemiskinan atau ketidaksetaraan yang dialami suatu daerah atau wilayah karena geografis (seperti iklim, lokasi, sumber daya alam), budaya (seperti nilai moral, norma perilaku sosial), pengetahuan dan kemampuan (seperti kualitas informasi, modal manusia). Dalam pengabdian masyarakat Fakultas Ekonomi Univesriatas Warmadewa ini mengedepankan tujuan mensosialisasikan BUMDEs serta pengelolaan potensi desa. Salah satu desa yang berpotensi untuk pengabdian masyarakat adalah Desa Galungan di Kabupaten Buleleng, Bali. Alasan pemilihan lokasi ini karena BUMDes Desa Galungan merupakan pengelola hutan desa sebagai objek ekowisata. Penelitian ini mengadopsi pendekatan tematik untuk menuju tujuan utama. Pengabdian masyarakat Fakultas Ekonomi Universitas Warmadewa mengedepankan tujuan mensosialisasikan BUMDEs serta pengelolaan potensi desa. Salah satu desa yang berpotensi untuk pengabdian masyarakat adalah Desa Galungan di Kabupaten Buleleng, Bali. Hasil pengabdian masyarakat adalah desa harus mampu mensinergikan BUMDEs dengan lembaga keuangan lainnya yang ada di desa seperti koperasi ataupun Lembaga Perkreditan Desa. Jika sinergitas ini terjadi, maka desa akan menjadi kuat dan pengelolaan potensi desa menjadi lebih optimal. Potensi hutan desa yang menjadi daya tarik wisata disini harus dikelola dengan baik melalui BUMDEs dengan mengedepankan strategi ekowisata. Ekowisata berdampak pada berbagai aspek, beberapa di antaranya adalah aspek konservasi, pemberdayaan, dan pendidikan lingkungan. Wisata dengan fokus konservasi alam juga mampu memberikan insentif ekonomi bagi upaya pelestarian dan keanekaragaman flora fauna yang ada. Tentunya juga akan berdampak pada budaya serta warisan alam di sekitar tempat wisata tersebut.
E-Learning of the Timber Processing and Application Course at a South African University amidst the Covid-19 Pandemic
Authors: Legg-Jack Dagogo William
Published: April 2022

The paper explored e-learning of a course, Timber Processing and Application at a University in KwaZulu-Natal Province, South Africa during the COVID-19 pandemic. The purpose was to understand the challenges that the participants encounter in studying their practical module online. A qualitative case study design located in the interpretivist paradigm was employed. The sample consisted of 15 participants, nine male and six female students. These participants were selected using purposive and convenience sampling techniques. Data for the study was generated through an open-ended electronic questionnaire designed on Google forms and was analysed using a thematic approach. The Technology Acceptance Model was employed as a framework to determine students’ e-learning of Timber Processing and Application amid the COVID-19 pandemic. The study revealed diverse challenges to the e-learning method of Timber Processing and Application education. These include limited or no access to the internet, lack of internet data bundles, poor internet connectivity, preference for face-to-face learning, absence of practical activities in e-learning, unavailability of ICT learning infrastructure, difficulty in time management and self-discipline as well as lack of conducive learning environment. With these findings, the study contributes to the literature as it highlights the challenges associated with the e-learning of Timber Processing and Application (practical courses/modules) amidst the COVID-19 pandemic, as well as the right approach to the effective study of the course. Consequently, the study provides recommendations on how to tackle the challenges revealed in the research. Keywords: COVID-19; E-learning; Lockdown; Timber Processing and Application
The Energetics of the Central Engine in the Powerful Quasar 3C 298
Authors: Punsly Brian , Groeneveld Christian , Hill Gary J. , Marziani Paola , Zeimann Gregory R. , Schneider Donald P.
Published: April 2022

The compact steep-spectrum radio source 3C 298 (redshift of 1.44) has the largest 178 MHz luminosity in the Third Cambridge Revised Catalogue (3CR); its radio lobes are among the most luminous in the universe. The plasma state of the radio lobes is modeled with the aid of interferometric radio observations (in particular, the new Low Frequency Array observation and archival MERLIN data) and archival single-station data. It is estimated that the long-term time-averaged jet power required to fill these lobes with leptonic plasma is

Q

¯

≈
1.28
±
0.51
×

10

47

erg

s

−
1

, rivaling the largest time-averaged jet powers from any quasar. Supporting this notion of extraordinary jet power is a 0.5–10 keV luminosity of ≈ 5.2 × 1046 erg s−1, comparable to luminous blazars, yet there is no other indication of strong relativistic beaming. We combine two new high signal-to-noise ratio optical spectroscopic observations from the Hobby-Eberly Telescope with archival Hubble Space Telescope, Two Micron All Sky Survey, and Galaxy Evolutionary Explorer data to compute a bolometric luminosity from the accretion flow of L
bol ≈ 1.55 ± 0.15 × 1047 erg s−1. The ratio,

Q

¯

/

L

bol

≈
1

, is the approximate upper limit for quasars. Characteristic of a large

Q

¯

/

L

bol

, we find an extreme-ultraviolet (EUV) spectrum that is very steep (the “EUV deficit” of powerful radio quasars relative to radio-quiet quasars), and this weak ionizing continuum is likely a contributing factor to the relatively small equivalent widths of the broad emission lines in this quasar.
New Roads to the Small-scale Universe: Measurements of the Clustering of Matter with the High-redshift UV Galaxy Luminosity Function
Authors: Sabti Nashwan , Muñoz Julian B. , Blas Diego
Published: April 2022

The epochs of cosmic dawn and reionization present promising avenues for understanding the role of dark matter (DM) in our cosmos. The first galaxies that populated the universe during these eras resided in DM halos that were much less massive than their counterparts today. Consequently, observations of such galaxies can provide us with a handle on the clustering of DM in an otherwise currently inaccessible regime. In this work, we use high-redshift UV galaxy luminosity function (UV LF) data from the Hubble Space Telescope to study the clustering properties of DM at small scales. In particular, we present new measurements of the matter power spectrum at wavenumbers 0.5 Mpc−1 < k < 10 Mpc−1 to roughly 30% precision, obtained after marginalizing over the unknown astrophysics. These new data points cover the uncharted redshift range 4 ≤ z ≤ 10 and encompass scales beyond those probed by cosmic microwave background and large-scale structure observations. This work establishes the UV LF as a powerful tool to probe the nature of DM in a different regime than other cosmological and astrophysical data sets.
Introducing MEGASIM: Multitudinous Earth Greek/Trojan Asteroid SIMulation*
Authors: Yeager Travis , Golovich Nathan
Published: April 2022

We announce the completion of two new Earth Trojan Asteroid (ETA) simulations. ETAs co-orbit the Sun with Earth and remain loosely bound to the fourth or fifth Lagrange points. To date, two ETAs have been detected (2010 TK7 and 2020 XL5); however, based on their orbits, these are likely temporary captures rather than members of a primordial population. The motivation for our simulations is multi-faceted: (1) the lack of a detected population despite literature claims of stability over the age of the solar system, (2) ETAs are important for both solar system science and planetary defense, and (3) the proximity of ETAs makes them prime candidates for space exploration missions. These simulations are of extremely high fidelity, large in number and long in simulation time. We will be releasing a series of papers based upon these simulations.
Clinical Factors Predictive of COPD Diagnosis in a Community Hospital
Authors: Tongdee Sukanya , Khamsai Sittichai , Sawanyawisuth Kittisak
Published: April 2022

BACKGROUND: Chronic obstructive pulmonary disease (COPD) is an irreversible obstructive airway disease. Diagnosis can be made using a spirometry which may not be available in resource-limited setting or developing countries.

AIM: This study aimed to evaluate if clinical factors can be predictive of COPD diagnosis.

MATERIALS AND METHODS: This study was a retrospective cohort study conducted at community hospital. The inclusion criteria were adult patients who had clinical symptoms suggestive of COPD and had performed adequate pulmonary function tests. Patients were categorized into two groups by diagnosis of COPD. Clinical predictors of being COPD were executed by multivariate logistic regression analysis.

RESULTS: There were 200 patients who met the study criteria. Of those, 136 patients (68.00%) had compatible pulmonary function test with COPD. There were eight factors in the final predictive model for being COPD (Table 1). Among these factors, three factors were independently associated with being COPD: Productive sputum, body mass index, and hyperinflation by chest X-ray. The hyperinflation by chest X-ray had highest adjusted odds ratio of 10.93 (95% CI 3.23, 36.96).

CONCLUSIONS: Productive sputum, body mass index, and hyperinflation by chest X-ray were independent factors for COPD diagnosis. Physicians in resource-limited setting may use these clinical factors as diagnostic tool for COPD.
A New Approach of Several Minimally Invasive Procedures for Improvement of the Outcome in Preterm Infants
Authors: Radulova Petya , Hitrova-Nikolova Stanislava , Vakrilova Liliya , Dimitrova Violeta
Published: April 2022

BACKGROUND: Based on the last update of European Consensus Guidelines on Management of Respiratory Distress Syndrome, the following study is new for our clinic approach for minimally invasive respiratory support in preterm infants.

AIM: The aim is to find out if the implementation of several minimally invasive procedures leads to a reduction of the frequency and severity of chronic complications and improved outcomes in extremely premature infants.

MATERIALS AND METHODS: Infants are below 30 gestational weeks, divided into two groups – therapeutic – 37 infants on standardized early respiratory management protocol which includes: High-flow continuous positive airway pressure (20l/min ≥ 15 PEEP) in the delivery room, support of spontaneous breathing and non-invasive mechanical ventilation, avoidance of hypothermia and LISA shortly after birth, and control group – 46 infants that received standard respiratory support (positive pressure ventilation – invasive and non-invasive in the delivery room, most infants ≤ 27 weeks gestational age were intubated and received early surfactant, extubation “when being ready” – usually after few days).

RESULTS: The duration of mechanical ventilation, oxygen therapy, and hospital stay is shorter in the therapeutic group (p < 0.05). Severe bronchopulmonary dysplasia is not found in the interventional group, 26% of the patients in the control group have severe form of the disease (p = 0.001). Severe intraventricular hemorrhages are found in 11% of the infants in the therapeutic group and 28% in the control group (p = 0.06).

CONCLUSION: Due to the changed protocol, we report increased survival of ELBW infants without severe chronic complications. The acute pulmonary injury, acquired in the perinatal period, is directly connected with the development of BPD. For this reason, all the changes that we introduced in our clinic (heat management, support of spontaneous breathing, “open up” lungs – high flow PEEP/CPAP, and LISA during spontaneous breathing) contribute to the lower frequency of severe chronic complications and high percentage of ELBW infants, who do not develop severe BPD.
Diagnostic Value of GATA3 and Uroplakin 3 in Differentiating Urothelial Carcinoma from Prostatic and Colorectal Carcinoma
Authors: Salama Maha , Khairy Dina A.
Published: April 2022

BACKGROUND: Prostate involvement by urothelial carcinoma (UC) can occur from direct invasion. Involvement of the urinary bladder by prostate adenocarcinoma (PAC) may similarly occur, representing a common diagnostic problem especially in high-grade tumors. Furthermore, colorectal carcinoma (CRC) invades the urinary bladder which represents another challenging task for the pathologists, a problem not only in the urinary bladder but also in lymph node metastasis. Uroplakin 3 has been used for differentiation but unfortunately, its sensitivity is not so high especially in high-grade cases. Recently, GATA3 was recognized as being involved in development of urothelium.

AIM: Few studies elaborated its expression in high-grade UC; therefore, this study aimed at evaluating GATA3 and comparing it to uroplakin 3 expression in differentiating the three tumors from each other.

MATERIALS AND METHODS: Sixty paraffin blocks collected and distributed as 20 cases of invasive UC, 20 cases of PAC, and 20 cases of CRC, all high grade, to be studied immunohistochemically against GATA3 and uroplakin 3.

RESULTS: GATA3 expression was positive in 80% of UC compared to none of the cases of PAC or CRC. The sensitivity of GATA3 in diagnosing UC was 80% whereas the specificity was 100%. Uroplakin 3 was positive in 50% of UC compared to none of the cases of PAC or CRC. The sensitivity of uroplakin 3 in diagnosing UC was 50% whereas the specificity was 100%. GATA3 and uroplakin 3 showed statistically significant inverse relation with lymphovascular and muscle invasion.

CONCLUSION: GATA3 is more sensitive than uroplakin 3 for UC that can be effectively used to exclude PAC and CRC. Moreover, GATA3 and uroplakin 3 expression significantly decreases with lymphovascular invasion as well as muscle proper invasion which emphasizes their good prognostic role.
Hemodynamics after Fontan operation in complex congenital heart defects with univentricular circulation
Authors: Levunlieva Elisaveta
Published: April 2022

The term “univentricular (single ventricle) heart” refers to many complex congenital heart defects (CHD). The main characteristic of these malformations is the presence of a single anatomical or functional chamber. Normally, the cardiovascular system consists of two circles which are connected in series, i.e. the pulmonary and the systemic circles are driven by a “double pump” – the right and left ventricle. In the univentricular heart, the single ventricle maintains both systemic and pulmonary blood ﬂ ow. The two circulation circles are connected in parallel rather than in series, as is the case in the normal circulation which is driven by two ventricles. The classic Fontan operation was introduced 50 years ago. The Fontan type operations are staged procedures aimed at complete separation of the systemic and venous circulation without a subpulmonary chamber in univentricular CHDs. Originally designed for patients with tricuspid atresia, this concept is currently used i n many complex CHDs in which two ventricular correction is not possible. Although it divides the blood circles and eliminates cyanosis, this physiological correction is associated with signiﬁ cant changes in hemodynamics. The cardiologists and pediatricians should be aware of these peculiarities of the Fontan circulation.
Temporal and spatial changes of biodiversity in Caverns of Heaven and Places of Blessing, Zhejiang Province, China from 1990 to 2020
Authors: Zhu Yuanna , Jin Hexian , Zhong Le
Published: April 2022

Caverns of Heaven and Places of Blessing (CHPB) are the earliest Ecological Reserve in China, but in recent years, due to the accelerated process of urbanization and weak protection, the Chinese traditional ecological reserve represented by CHPB has been damaged to a certain extent. How to accurately measure the dynamic changes of ecological value in existing ecological protection and construct is an initial topic of CHPB protection. To understand the temporal and spatial changes characteristics of biodiversity in CHPB, this paper selects three-time nodes in 1990, 2005, and 2020, and takes CHPB in Zhejiang Province as an example, comprehensive three influencing factors: habitat quality, landscape pattern, and nighttime-light. To provide a relevant theoretical basis for the protection of CHPB, this paper quantitatively analyzes the changes of ecological environment and biodiversity in recent 30 years. The results showed that from 1990 to 2020, the biodiversity of CHPB in Zhejiang Province showed a positive change, the decline in Caverns of Heaven overall area slowed down, and the core area rebounded. The spatial distribution change of biodiversity is highly consistent with the land-use changes. The low value regions of biodiversity are mainly concentrated in the regions with intensive human activities, and the area decreases with the expansion of construction land. The core areas are primary areas with high biodiversity and overlap with nature reserves, natural parks, Scenic and Historic Interest Area, and other protected areas. In a word, CHPB still plays a vital role in ecological and environmental protection. In the future development, we should still pay attention to its biodiversity protection, and give full play to its role in ecological and environmental protection, and realize the contemporary application of CHPB’s traditional ecological knowledge.
Atorvastatin ascorbic acid cocrystal strategy to improve the safety and efficacy of atorvastatin
Authors: Taraka Sunil Kumar Karumuri , Pasala Praveen Kumar , Sahoo Ranjan Kumar , Laddha Umesh D. , Khairnar Shubham J. , Bendale Atul R. , Rudrapal Mithun
Published: April 2022

The study was aimed to investigate the effect of dissolution enhancement on the hypolipidemic effect and hepatotoxicity of the drug in hyperlipidemic rats. Atorvastatin ascorbic acid cocrystals were prepared by phase solution methods and characterized by Fourier transformation infrared spectroscopy, differential scanning calorimetry, scanning electron microscopy, X-Ray powder diffraction. Results of characterization confirmed that atorvastatin ascorbic acid cocrystals exhibited particle size was 221 nm. In in vitro study, results of dissolution test showed that the release of atorvastatin was increased to 1.6 folds. From In vivo study results, it was observed that in atorvastatin ascorbic acid cocrystals treated rats, serum total cholesterol, triglycerides, liver transaminase levels were significantly decreased, and liver glutathione activity was increased. In conclusion, atorvastatin ascorbic acid cocrystals therapy exhibited less hepatotoxicity in presence of ascorbic acid when compared to atorvastatin alone therapy and also the efficacy of therapy was improved.
Fertility-Household Credit Burden Nexus at the Present Stage
Authors: Gurov Ilya N. , Kulikova Elena Yu.
Published: April 2022

The article examines the relationship between fertility and household credit burden using data for 79 countries for the period from 1990 to 2019. The authors identify 9 patterns describing the mutual influence of fertility and household debt burden. The analysis of patterns shows that the presence of a significant positive impact of households’ mortgage debt burden on fertility in future periods may indicate both a direct causal relationship between the indicators and the adoption of conditional decisions on pregnancy planning prior to obtaining mortgage loans to improve housing conditions. The same is true for households’consumer credit burden, as well as for quantitative estimates of the impact of fertility growth on households’ debt burden in subsequent periods. The article shows that in developed and developing countries, the growth of the total fertility rate is positively associated with the subsequent dynamics of mortgage and consumer loans in relation to GDP. In developed countries, the growth of mortgage and consumer loans is positively associated with the subsequent fertility dynamics. In developing countries, an increase in mortgage loans is positively but insignificantly correlated with fertility in the following years, while an increase in consumer loans leads to an increase in fertility in the short term, and to its decrease in subsequent years. The results indicate that success in demographic policy aimed at increasing fertility will be accompanied by the growth of households’debt burden, and therefore in subsequent periods households will be forced to pay interest and repay the principal debt, which will reduce families’ ability to finance children’s education. In this regard, state programmes that provide free education and development of children should be conducted in parallel with the implementation of demographic policy aimed at increasing fertility.
The South American moth Rheumaptera mochica (Dognin, 1904) (Lepidoptera, Geometridae, Larentiinae) rediscovered after more than a century of anonymity
Authors: Vargas Héctor A. , Solis M. Alma , Vargas-Ortiz Marcelo
Published: April 2022

Rheumaptera mochica (Dognin, 1904) (Lepidoptera, Geometridae, Larentiinae) is reported from Chile for the first time. It was described from the western slopes of the Andes of southern Peru more than 100 years ago, and was recently rediscovered in Chile after larvae were collected and reared on the shrub Senna birostris var. arequipensis (Meyen ex Vogel) H.S. Irwin & Barneby (Fabaceae). This discovery expands the known distribution of this moth and provides its first host plant record. The genitalia of R. mochica are described and illustrated for the first time and compared to those of R. affirmata (Guenée, [1858]). A maximum likelihood analysis based on mitochondrial DNA sequences clustered R. mochica as sister to R. affirmata with 3.6–3.8% divergence (K2P). A lectotype is designated for Calocalpe mochica Dognin, 1904.
Un listado de la familia Bembicidae (Hymenoptera: Apoidea) de Túnez
Authors: Ben Khedher‍ Hassib , Yildirim Erol , Braham Mohamed
Published: April 2022

Se recopila una lista de la familia Bembicidae en Túnez basada en los datos disponibles en la literatura, en nuevo material recolectado de diferentes localidades de Túnez entre 2017 y 2019, y algunos especímenes conservados en el Muséum National d’Histoire Naturelle, París, Francia. Como resultado, se registraron 49 especies y dos subespecies en 16 géneros de la familia Bembicidae. Dos géneros: Psammaecius Lepeletier de Saint Fargeau, 1832 y Brachystegus A. Costa, 1859 se reportan en este estudio por primera vez. Esto se suma a nueve especies y subespecies: Alysson ratzeburgi Dahlbom, 1843, Psammaecius eremorum de Beaumont, 1952, Stizoides klugii (F. Smith, 1856), Stizus fuscatus Morice, 1897, Stizus niloticus saharae Roth, 1934, Stizus pubescens arenarum Handlirsch, 1892, Stizus ruficornis strigatus Mochi, 1939, Stizus vespoides (Walker, 1871) y Brachystegus braueri (Handlirsch, 1887) que son nuevas para la fauna tunecina. También se han encontrado nuevas localidades para varis especies y subespecies, que ya habían sido reportadadas de Túnez. Los taxones identificados se ilustran mediante fotografías digitales y se presenta su distribución global y en Túnez.
El género de milpiés Cylindroiulus Verhoeff, 1894 (Diplopoda: Julida; Julidae) en España: citas recientes y descripción de tres nuevas especies del País Vasco, Navarra, Andalucía y Cataluña
Authors: Read Helen J.
Published: April 2022

Se han examinado dos cuantiosas colecciones de Cylindroiulus (una del País Vasco y Navarra y otra de Andalucía), y se han suplementado con otras, más pequeñas, de otras áreas de España; en total se han encontrado 10 especies. Se han descrito tres nuevas especies: C. caramelos sp. nov., C. elosegiorum sp. nov. y C. karinhansorum sp. nov. Las otras siete especies fueron: C. londinensis (Leach, 1814), C. franzi Attems, 1952, C. punctatus (Leach, 1815), C. pyrenaicus Brölemann, 1897, C. sagittarius Brölemann, 1897, C. sanctimichaelis Attems, 1927 y C. unciger Attems, 1952. Se presenta información sobre esas especies, añadiéndola a la ya disponible. Se hacen comentarios sobre el difícil grupo londinensis, que parece ser especialmente rico en especies en la península ibérica. Se sugieren futuras líneas de investigación para este grupo, incluyendo estudios genéticos.
Definición paramétrica de Estructuras Recíprocas Transformables con Nodos de tres barras
Authors: Martínez Arias Cristina , Anaya Díaz Jesús
Published: April 2022

En este artículo, se aborda la determinación de las condiciones de equilibrio de Superficies de Geometría Variable definidas por Estructuras Recíprocas mediante el estudio de un campo de fuerzas actuantes y del lugar geométrico que describen los elementos de tales estructuras a través de los diferentes estados de transformación. Se establecen las propiedades geométricas y estructurales de un Nodo Recíproco de estas estructuras con tres barras cilíndricas iguales, mediante el desarrollo de una formulación matemático-paramétrica, con el objetivo de deducir el proceso de equilibrio para la obtención analítica de sistemas de estabilización de Superficies de Geometría Variable conformadas por Estructuras Recíprocas Transformables. La finalidad de la investigación presentada aquí es la aplicación de dicho sistema de estabilización mediante un software geométrico-estructural de nueva creación, al diseño y cálculo de distintas tipologías de superficies en la configuración de arquitecturas de geometría transformable.
Resistencia al desgaste y rendimiento durante procesos de extrusión a escala industrial de los aceros 100Cr6 y 21NiCrMo2 sometidos a tratamientos criogénicos
Authors: Karaca Bahadır , Cenk Kumruoğlu Levent
Published: April 2022

Se ha investigado los efectos de diferentes parámetros de tratamiento térmico y criogénico como la temperatura y el tiempo de mantenimiento sobre la microestructura (cantidad de austenita retenida) y la dureza de moldes de extrusión producidos a partir de los aceros 21NiCrMo2 y 100Cr6. La matriz de extrusión del acero 21NiCrMo2 se cementó durante 22,5 h en una atmósfera de gas (25% CO, 35% N2, 40% H2) a 920 °C. Al final del proceso de cementación, la temperatura se mantuvo a 850 °C, que es la temperatura de austenización, durante 2 h, seguido de enfriamiento en aceite a 80 °C, permaneciendo en aceite durante 45 minutos. No se realizó este proceso de cementación para los moldes de extrusión fabricados con el acero 100Cr6. En este acero solo se llevó a cabo el tratamiento de austenización a la temperatura de 850 °C (manteniendo durante 2 h). Los moldes de acero que se fabricaron con aceros los 21NiCrMo2 y 100Cr6 se trataron posteriormente de manera criogénica a -120 °C durante 2 h y, posteriormente, se templaron a 150 °C durante 1,5 h. Como resultado del tratamiento criogénico, la dureza del acero 21NiCrMo2 aumentó hasta los 840 Hv y mejoró la resistencia al desgaste de la superficie de la matriz de extrusión. La cantidad de austenita residual disminuyó del 20% al 6% después del tratamiento criogénico. Por efecto del proceso criogénico, la dureza superficial de la muestra de acero 100Cr6 aumentó a ~870 Hv, lo que supone un incremento del 4,5%, debido a la transformación de la austenita residual a martensita. La pérdida de masa durante el ensayo de desgaste de las matrices de extrusión endurecidas se redujo de 0,1420 mg a 0,0221 mg. El valor de resistencia al impacto medido en esta condición fue de 20 J. El acero 100Cr6 después del tratamiento criogénico se usó para extruir 12 toneladas de aleación de Al en una prensa industrial. Esta cantidad de material es un 30% inferior a la del acero para herramientas para trabajo en caliente. Por otro lado, el acero 100Cr6 es más económico y el tratamiento térmico es más práctico. El rendimiento durante el proceso de extrusión del acero 21NiCrMo2 fue un 50% inferior al del acero para herramientas de trabajo en caliente.
The performance of cutinase and pectinase in cotton scouring
Authors:   , Agrawal Pramod
Published: April 2022

Advances in biotechnology and enzymology have brought new lines of research and have accelerated the development of enzymatic applications in wet textile processing for now nearly one decade. Amongst the various stages of cotton preparation, wet textile processing is a highly energy, water and chemicals consuming step. Enzymes are known for their specificity, high efficiency and ability to work under mild conditions and provide a promising solution to these challenges.
An engineering approach to business model experimentation - an online investment research startup case study
Authors: Kijl Björn , Boersma Durk
Published: April 2022

Every organization needs a viable business model. Strikingly, most of current literature is focused on business model design, whereas there is almost no attention for business model validation and implementation and related business model experimentation. The goal of the research as described in this paper is to develop a business model engineering tool for supporting business model management as a continuous design, validation and implementation cycle. The tool is applied to an online investment research startup in roll out and market phase. This paper describes the research as performed in a case study setting by focusing on the design, implementation and evaluation of the business model engineering tool. We also analyze the actual implementation and usage of the business model tool by the online investment research startup by focusing on the most critical actions related to actual business model implementation – i.e. actions with so-called ‘Lollapalooza tendencies’.
An opportunity-based approach to international entrepreneurship: pursuing opportunities internationally through prospection
Authors: Oyson Manjo , Whittaker D. Hugh
Published: April 2022

This paper argues for a better understanding of entrepreneurship in international entrepreneurship – the ‘E in IE’. The paper suggests that the central role of opportunity formation and exploitation in entrepreneurship research should be fully explored in IE. The entrepreneur-firm-opportunity nexus in internationalisation is examined through an opportunity-based approach (OBA). This suggests that the process of internationalisation may be conceived as the formation and exploitation of international entrepreneurial opportunities. The subjective, entrepreneurial ability to create an imagined future – ‘prospection’ – is examined to show how entrepreneurs use prospection to: creatively imagine combinations of firm capabilities and market opportunities to form entrepreneurial opportunities. A typology of entrepreneurial opportunity formation is advanced which distinguishes between opportunity discovery, development, construction, and creation. The paper concludes by suggesting how the OBA can help explain the choice of foreign markets, early internationalisation, speed of internationalisation, and foreign entry modes.
Mobile Augmented Reality Learning Media with Metaverse to Improve Student Learning Outcomes in Science Class
Authors: Marini Arita , Nafisah Syifa , Sekaringtyas Tunjungsari , Safitri Desy , Lestari Ika , Suntari Yustia , Umasih  , Sudrajat Ajat , Iskandar Rossi
Published: April 2022

The development of information and communication technology affects the learning methods and media used. Augmented Reality technology allows students to experience learning with objects that can be seen in person. The purpose of the study was to see how students learned when they used the metaverse app, which is mobile augmented reality software for science courses. The population group consists of 92 students from several schools in cluster I, Depok Subdistrict. Then the sample was taken using the slovin formula until it obtained 75 samples of grade 5 students. This study employs experimental research techniques and a single group pre- and post-test. A t-test is used to analysed the collected data. According to the findings, using that metaverse applications has a favourable impact on students' learning outcomes. Students can use the Metaverse app to see better learning outcomes. Students are also more interested in learning and can easily understand and discover what is being learned. In addition, students find it more fun to learn using the Metaverse app, which is a mobile augmented reality.
Temporal Analysis and Prediction of Ambient Air Quality Using Remote Sensing, Deep Learning, and Geospatial Technologies
Authors: Bashir Aymen , Mughal Abdullah , Mumtaz Rafia , Tahir Muhammad Ali
Published: April 2022

As of today, increased air pollution has disrupted the air quality levels, deeming the air unsafe to breathe. Traditional systems are hefty, costly, sparsely distributed, and do not provide ubiquitous coverage. The interpolation used to supplement low spatial coverage induces uncertainty especially for pollutants whose concentrations vary significantly over small distances. This chapter proposes a solution that uses satellite images and machine/deep learning models to timely forecast air quality. For this study, Lahore is chosen as a study area. Sentinel 5-Precursor is used to gather data for Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2), and Carbon Monoxide (CO) for years 2018-2021. The data is processed for several AI models, where convolutional neural networks (CNN) performed the best with mean squared error (MSE) 0.0003 for the pollutants. The air quality index (AQI) is calculated and is shown on web portal for data visualization. The trend of air quality during COVID-19 lockdowns is studied as well, which showed reduced levels of NO2 in regions where proper lockdown is observed.
Automated Multi-Sensor Board for IoT and ML-Enabled Livestock Monitoring
Authors: Chaudhry Abdul Aziz , Mumtaz Rafia , Siddiqui Usman Ahmad , Muzammil Syed Hassan , Tahir Muhammad Ali
Published: April 2022

Livestock monitoring is one of the most common problems in the current time, and to sustain the lifecycle and support the nature of domesticated animals, the standard checking of animal wellbeing is fundamental. Moreover, many diseases are spread from animals to human beings; hence, an early prognosis in regard to cow wellbeing and illness is essential. This chapter proposed an internet of things (IoT)-based framework for domesticated animal wellbeing checking. The proposed framework comprises of a specially crafted multi-sensor board to record a few physiological boundaries including skin temperature, pulse, and rumination with regards to encompassing temperature, stickiness, and a camera for picture examination to recognize diverse standards of health. The data is collected using LoRa gateway technology, where gathered data is examined and utilized for performing ML models to identify diseased and healthy creatures and foresee cow wellbeing for giving early and convenient clinical consideration. The results obtained are used for careful insights regarding animal health and wellbeing.
Enhanced Water Quality Monitoring and Estimation Using a Multi-Modal Approach
Authors: Khan Aamir Farooq , Mumtaz Rafia , Usama Muhammad , Mahsud Taimoor Khan
Published: April 2022

Remote sensing through satellites and internet of things (IoT) technology are two widespread techniques to assess inland water quality. However, both these techniques have their limitations. IoT provides point data, which is insufficient to represent entire water body, especially if the water body has complex terrain and hydrology. Through remote sensing, we can sample data of a large area, but data acquisition is constrained by satellite. Revisit time and quality of estimates can be affected by image resolution. Moreover, non-optical properties that might affect water quality cannot be sensed through satellites. To complement this, GIS data from labs can be useful for providing higher resolution and accurate data and can be used as ground truth. Thus, in this chapter, the authors aim to integrate both these data collection techniques followed by estimation and prediction through machine learning models. The accumulated datasets are used to train machine learning (ML) models deployed at a server. The selected ML model is an artificial neural network with train accuracy of 97% and test accuracy of 95%.
Predicting the Early Stage of Diabetes and Finding the Association of the Symptoms
Authors: Naim Tasnim Mohamad , Abdul Rashid Siti Nurnabila , Ahmad Muneer , Jhanjhi N. Z.
Published: April 2022

Diabetes has become a growing global public health issue. This illness can become chronic since there are no early symptoms and it can lead to several negative health impacts. This study focuses on the early identification of diabetes based on the symptoms of the disease and finds the relation between the symptoms and the diagnosis. Successful early diagnosis of this disease could boost a person to a better treatment plan before it worsens the health to a critical stage. This study exploits recent classification algorithms including Naïve Bayes, Logistic Regression, REPTree, J48, and Random Forest. The association rules mining using the apriori algorithm is used. Further, the 10-fold cross-validation with split criteria was adopted. The authors adopted several evaluation metrics including accuracy, precision, recall, F-measure, and area under the ROC curve. The research findings revealed the Random Forest to be the best classification algorithm as compared to other classifiers.
Supervising With Empathy at the Core
Authors: Salas Kandy Mink
Published: April 2022

This chapter describes how excellent leadership and management can be achieved while holding an empathetic supervision style at the core of the practice. Included is an exploration of skills such as the ability to recognize the emotional life of employees; the ability to deeply relate, to feel what the team is feeling; and the ability, will, and courage to take empathetic action to address what employees are feeling. Myths surrounding leadership are explored. Issues of loss, fear, and unequal treatment across social identities are explored, as is the impact of gender on perceptions of empathy in supervision. The impact of COVID-19 on supervision is discussed, with a focus on empathetic and compassionate practice. The typical arc of an employee from recruitment to departure is examined through an empathetic lens. The chapter also explores how an empathetic supervision style does not mean complacency nor does it mean a lack of strength. Strong, focused, goal-oriented leadership from an empathetic frame is possible.
Empathic Growth Mindset and Equity
Authors: Romo Melissa Janet , Allado Shannen Grace E.
Published: April 2022

This chapter explores how student affairs professionals in higher education in the United States can benefit from integrating a growth mindset grounded in empathy in their professional life. The authors examine ways a fixed mindset can impede learning and perpetuate inequities and how a growth mindset can encourage student affairs professionals to see themselves and the students they serve as capable of learning and growth. Therefore, the objectives of this chapter are (1) to provide insight into the meaning of mindset, (2) to highlight how the development of a growth mindset can help student affairs professionals nurture and sustain their capacity for empathy, (3) to examine how empathy supports the building of meaningful relationships with students, (4) how these relationships influence student success more equitably, and (5) provide recommendations on how student affairs professionals can actively develop and maintain an empathic growth mindset.
Students With Disabilities Within Academia
Authors: Gerali Jacquelyn , Neill Loretta
Published: April 2022

Students with disability identities face a variety of obstacles navigating college in the United States. Therefore, this chapter examines how empathy can guide educators to support students with disabilities more effectively, design strategic measures to address issues of access, accommodations, and increase inclusion in campus life. Utilizing empathy requires educators to fully understand the student's perspective and their lived experience. Consequently, empathy is critical to meeting the needs of students with disabilities, since disability status is often misunderstood. Empathic educators can create more equitable outcomes for students with disabilities by understanding (1) their own awareness of disability; (2) disability accommodations; (3) disability identity; (4) the intersection of disability, racial, and social identities; and (5) the application of Universal Design Theory.
Effects of ZnO and SiO2 Nanoparticle Additions on the Structural, Water Absorption and Mechanical Properties of Polyvinyl Alcohol (PVA) Films
Authors: Phadkule Saket S. , Navin Kumar , Nigrawal Archana , Ball Richard J. , Kurchania Rajnish
Published: April 2022

Nanocomposite films were prepared with polyvinyl alcohol (PVA) as a base matrix and ZnO, SiO2 nanoparticles as a filler material. SiO2 and ZnO nanoparticles were synthesized using sol-gel and co-precipitation methods, respectively. PVA-ZnO, PVA-SiO2, and PVA-ZnO-SiO2 hybrid nanocomposite films were prepared by a solution film casting method. The presence of ZnO and SiO2 nanoparticles within the films has been confirmed by structural and morphological analysis of the films. Water solubility, water absorption and tensile strength was evaluated for all the films produced. The addition of both types of nanoparticles in the PVA matrix led to a reduction in water absorption in addition to the water solubility capability of the material when compared to the pure PVA film. Addition of nanoparticles resulted in an increase in the tensile strength of the composite films compared to the pure PVA films by 14%, 23%, and 66% for the PVA-ZnO, PVA-SiO2, and PVA-ZnO-SiO2 films respectively. This work provides a simple route to tune the properties of PVA embedded with metal oxide nanoparticles for food packaging and medical applications.