bluuebunny/crossref_metadata_2025 huggingface dataset:
Three new species of Urocleidoides (Monogenoidea: Dactylogyridae) parasitizing characiforms (Actinopterygii: Characiformes) in Tocantins River, states of Tocantins and Maranhão, and new record for U. triangulus in Guandu River, state of Rio de Janeiro, Brazil
Authors: de Freitas Álvaro J.B. , Bezerra Carine A.M. , Meneses Yuri C. , Justo Marcia Cristina N. , Viana Diego C. , Cohen Simone C.
Published: August 2021

Three new species of Urocleidoides Mizelle & Price, 1964 are described from the gills of characiform fishes in the Tocantins River and its tributaries. Urocleidoides boulengerellae sp. nov. is described from Boulengerella cuvieri (Spix & Agassiz, 1829) and differs from all its congeners by the dorsal bar with a long posteromedial projection; male copulatory organ with 2–3 counterclockwise rings and a base with a flange; an accessory piece comprising a robust Y-shaped unit and a sheath-like unit; and a highly sclerotized vaginal canal. Urocleidoides paratriangulus sp. nov., described from Psectrogaster amazonica Eigenmann & Eigenmann, 1889, Cyphocharax gouldingi Vari, 1992, Caenotropus labyrinthicus (Kner, 1858) and Mylesinus paucisquamatus Jégu & Santos, 1988, is most similar to Urocleidoides triangulus (Suriano, 1981) Rossin & Timi, 2016 based on the shape of the anchors and bars but differs from U. triangulus in the morphology of the projection of the dorsal bar, the number of rings of male copulatory organ, and by the smaller size of members of hook pairs 1 and 5 compared with those of the remaining pairs. Urocleidoides tocantinensis sp. nov. is easily distinguished from all other species of the genus by the morphology of the vagina, which present a vaginal vestibule with a membranous cap. Urocleidoides triangulus is reported from its type host in the Guandu River, state of Rio de Janeiro. The present study increases the number of Urocleidoides species to 37 recognized species that fit all the generic characters.
Understanding Teach-Back and Teach-To-Goal Strategies Embedded in Support Calls for a Health Literacy-Sensitive Childhood Obesity Treatment Trial
Authors: Yuhas Maryam , Zoellner Jamie , Hou Xiaolu , Alexander Ramine , Hill Jennie , You Wen , Estabrooks Paul
Published: August 2021

Background:

Low caregiver health literacy (HL) is related to increased obesity risk for their children. Teach-Back and Teach-to-Goal (TB/TTG) are strategies that may improve comprehension of key concepts for people who have low HL but have yet to be examined in the context of childhood obesity treatment.

Objective:

This study evaluated TB/TTG strategies integrated within support calls delivered to caregivers as part of a 3-month childhood obesity intervention.

Methods:

Ninety-four caregivers (60% Black, 42% high school education or less, 53% with income ≤$29,999, and 34% low HL) with overweight/obese children age 8 to 12 years enrolled in a childhood obesity intervention. Caregiver HL was assessed at baseline using the Newest Vital Sign and caregivers were dichotomized to low and adequate HL groups for analyses. Caregivers received 6 bi-weekly support calls that alternated with in-person, family sessions. Call completion rates, comprehension of key content (correct responses on TB/TTG questions), and satisfaction with support calls were evaluated. Qualitative information on call satisfaction was gathered at the 3-month time point.

Key Results:

Average completion rate across all calls was 62% with a mean call time of 26 minutes (no significant difference between HL groups). Caregivers had an average score of 0.90 out of 1 when evaluating overall call comprehension by scoring TB/TTG performance. Content comprehension in calls 1, 3, and 4 was significantly higher among caregivers with adequate HL relative to low HL (
p
< .1). Caregivers from both HL groups felt satisfied with calls [9.1 (2.0)/10-point scale] and agreed that calls helped them learn class material better [8.1 (2.7)]. Qualitatively, caregivers provided 81 (75%) positive responses (e.g., good content) and 27 (25%) negative responses (e.g., too lengthy) regarding the support calls.

Conclusions:

Support calls using TB/TTG strategies were feasible, well received, and should be considered for incorporation into childhood obesity interventions.

[
HLRP: Health Literacy Research and Practice
. 2021;5(3):e208–e217.]

Plain Language Summary:

This study evaluated support calls that used Teach-Back and Teach-to-Goal health literacy strategies as part of a childhood obesity treatment trial. Support calls were well accepted and facilitated comprehension of the key learning objectives in caregivers, regardless of health literacy level. These strategies should be considered for incorporation into childhood obesity treatment interventions to increase uptake of main concepts.
Exploring Technical Quality Factors That Enhance Mobile Learning Applications Services Using Data Mining Techniques
Authors: Abu-Al-Aish Ahmad
Published: August 2021

Mobile learning (m-learning) has become an increasingly attractive solution for schools and universities that utilize new technologies in their teaching and learning setting. This study investigates the technical factors affecting the development of m-learning applications services from students’ perspectives. It presents a model consisting of twelve technical factors, including content usefulness, scalability, security, functionality, accessibility, interface design, interactivity, reliability, availability, trust, responsiveness, and personalization. To evaluate the model, a questionnaire was designed and distributed to 151 students in Jerash University, Jordan. The results indicate that all technical factors have positive affects on learner satisfaction and overall m-learning applications services, however the data mining analysis revealed that security and scalability factors exert a major impact on student satisfaction with m-learning applications services. This study gives insight for the future of developing and design m-learning applications.
Design Learning Environment Based on ISTE Standards
Authors: Aqel Magdy S.
Published: August 2021

The study aimed to design learning environment based on ISTE standards for students and computer science educators. For answering the questions of the study, the researchers adopted the descriptive approach, they Identified the ISTE standards and analyzed the content of instructional technology course based on ISTE standards for students and for computer science educators, then they designed learning environment based on this standard. The sample of the study consists of all students enrolled for an instructional technology course at the first semester 2017 in faculty of education in the Islamic University; the tool of the study was a content analysis to analyze and design the learning environment based on ISTE standards. The study recommended Integrate ISTE standards in academic preparation programs for teachers of faculty of education and Hold training courses for students and teachers in universities to introduce ISTE standards, and motivate teachers and students to embrace these standards.
Exploring the GCC Progress Towards United Nations Sustainable Development Goals
Authors: Umar Tariq , Umeokafor Nnedinma
Published: August 2021

The United Nations 17 Sustainable Development Goals were agreed in 2015 by all the members' countries to be achieved by 2030. The results of several reports reveal that some countries are making good progress to achieve these goals, the progress of others is low and most likely they will not be able to achieve these goals by the deadline if serious actions are not taken. The purpose of this article is to explore the progress of the Arabian Gulf region towards these goals and identify the Goals in which the region has major challenges. A qualitative research approach using PRISMA compliance is adopted to extract the region's progress and commitment from 91 different documents. The results show that the region has major challenges in four Goals. Specific issues associated with these goals and the GCC countries plans to overcome these issues are discussed in the paper.
Poverty, Development Project, and Methodology
Authors: Ahmed Masood
Published: August 2021

The institutes working to eradicate global poverty by supporting development projects should question their methodological approach. Global poverty figures are worrisome and International institutes are struggling to arrange funds for their activities. It is time to reevaluate the term “sustainable growth”, and more focus should be given to “comparable growth”, under it project outcomes are measured against the provincial values, than after best national figures and lastly with international best. The approach is to find measurable standards to establish the existing gap between the best benefits and project outcomes. Sustainable and poverty eradicating growth is only possible if outcomes are competitive locally, regionally, nationally and at international level. The paper studies Chhattisgarh Irrigation Development Project (CIDP) and evaluates its results for methodological improvement, the emphasis is to devise a practical approach and focus on comparable growth and address shortcomings of development projects in general.
A Smart Urbanism Management Platform
Authors: Alaoui Lamyae , Abdelouahid Rachida Ait , Marzak Abdelaziz , Lakhouili Abdellah
Published: August 2021

We all aspire to urbanism that recognizes the social, economic, political, cultural and physical-spatial dimensions of cities. Urbanism, which, based on working tools (SDAU, Planning Regulations, etc.) based on a quality model, will allow good practice and good translation of these systems on the territory (neighborhood, city, rural environment, etc). Due to that, we are interested in our article to propose and develop an automated urban planning management platform for the generation of updates proposed by urban planning experts in order to improve the quality of amenagement regulations.
Impact of Workplace Employee Grievances on Employee Performance: Evidence from Operational Level Employees in Some Selected Apparel Companies
Authors: Silva W. S. A. , Malalage G. S.
Published: August 2021

Today, most of the apparel industries face challenges because of the high turnover rates and low productivity problems. The employees are the basic building blocks of the overall organizational performance. The objective of this study was to identify the impact of employee grievances on employee performance. The population of the study was 600 operational level employees from 03 selected apparel companies in Panadura area. The study investigated the impact of work place employee grievances on employee performance by analyzing the data collected through 200 operational level employees in selected apparel companies located in Panadura area. A paper-based structured questionnaire was administered to collect data. Miscommunication, overloaded work, aggressive supervisory behavior, and training gap in the workplace have shown significant association with employee performance based on the regression analysis. The study proved a negative relationship between the independent variables and employee performance.
Chronic illnesses and polypharmacy in elderly patients: A hospital-based study in Northern Sri Lanka
Authors: Thiyahiny S. N. , Kumanan T. , Surenthirakumaran R.
Published: August 2021

Population aging and multiple pathology among older people have increased medicines use in elderly. Aim of this study was to evaluate chronic illnesses and polypharmacy and to determine factors associated with polypharmacy among hospitalized elderly at Teaching Hospital-Jaffna. This was a cross sectional, descriptive study. Elderly and polypharmacy were defined as ≥65years and concomitant use of ≥6 medications for ≥1 month respectively. Data were collected from bedhead-tickets of 288 elderly patients using data extraction sheet. Chi-squared and paired t-test were performed to determine the level of significance and unadjusted odd ratios were calculated to determine the association between polypharmacy and common chronic illnesses. A p value <0.05 was set as statistically significance. Mean age was 72 (SD±6.2) and majority were males (53.5%). Relatively higher proportion, 58.7% (n=169) of patients had polypharmacy. Seven chronic illnesses were prevalent in >10% of the patients. Lipid-modifying (80.9%) and antithombotic agents (76.4%) were the top two subgroups prescribed to elderly. Polypharmacy was substantially increased with increasing number of chronic illnesses (p<0.05). Significant association (p<0.05) was found between polypharmacy and coronary heart disease, anaemia, heart failure, asthma and diabetes mellitus. Significantly greater number of medications were prescribed on discharge compared to admission (p<0.05). This study concluded that polypharmacy was common among hospitalized elderly and increases with hospitalization. There was increased tendency to prescribe antithrombotic and lipid-modifying agents. These findings indicate the need for medication reconciliation and review in elderly patient. Further studies targeting wider population are needed to determine the appropriateness of polypharmacy in elderly.
Chronic illness management in COVID 19 era: An experience from primary care center
Authors: Rubavinoth K. , Kumaran S.
Published: August 2021

The COVID 19 pandemic questioned the continuous and comprehensive management of chronic illness. The new health guidelines and limited resources challenged primary care centers in their service delivery. A new local guideline become a timely need to overcome the challenges. This article is briefly narrating the local guidelines which was prepared by the University Family Health Center, Kondavil.
HLA Class II Polymorphisms Modulate Gut Microbiota and Experimental Autoimmune Encephalomyelitis Phenotype
Authors: Shahi Shailesh K , Ali Soham , Jaime Camille M , Guseva Natalya V , Mangalam Ashutosh K
Published: August 2021

Multiple sclerosis (MS) is an autoimmune disease of the CNS in which the interaction between genetic and environmental factors plays an important role in disease pathogenesis. Although environmental factors account for 70% of disease risk, the exact environmental factors associated with MS are unknown. Recently, gut microbiota has emerged as a potential missing environmental factor linked with the pathobiology of MS. Yet, how genetic factors, such as HLA class II gene(s), interact with gut microbiota and influence MS is unclear. In the current study, we investigated whether HLA class II genes that regulate experimental autoimmune encephalomyelitis (EAE) and MS susceptibility also influence gut microbiota. Previously, we have shown that HLA-DR3 transgenic mice lacking endogenous mouse class II genes (AE-KO) were susceptible to myelin proteolipid protein (91–110)–induced EAE, an animal model of MS, whereas AE-KO.HLA-DQ8 transgenic mice were resistant. Surprisingly, HLA-DR3.DQ8 double transgenic mice showed higher disease prevalence and severity compared with HLA-DR3 mice. Gut microbiota analysis showed that HLA-DR3, HLA-DQ8, and HLA-DR3.DQ8 double transgenic mice microbiota are compositionally different from AE-KO mice. Within HLA class II transgenic mice, the microbiota of HLA-DQ8 mice were more similar to HLA-DR3.DQ8 than HLA-DR3. As the presence of DQ8 on an HLA-DR3 background increases disease severity, our data suggests that HLA-DQ8–specific microbiota may contribute to disease severity in HLA-DR3.DQ8 mice. Altogether, our study provides evidence that the HLA-DR and -DQ genes linked to specific gut microbiota contribute to EAE susceptibility or resistance in a transgenic animal model of MS.
Critical Role of Zinc Transporter (ZIP8) in Myeloid Innate Immune Cell Function and the Host Response against Bacterial Pneumonia
Authors: Hall Sannette C , Smith Deandra R , Dyavar Shetty Ravi , Wyatt Todd A , Samuelson Derrick R , Bailey Kristina L , Knoell Daren L
Published: August 2021

Zinc (Zn) is required for proper immune function and host defense. Zn homeostasis is tightly regulated by Zn transporters that coordinate biological processes through Zn mobilization. Zn deficiency is associated with increased susceptibility to bacterial infections, including Streptococcus pneumoniae, the most commonly identified cause of community-acquired pneumonia. Myeloid cells, including macrophages and dendritic cells (DCs), are at the front line of host defense against invading bacterial pathogens in the lung and play a critical role early on in shaping the immune response. Expression of the Zn transporter ZIP8 is rapidly induced following bacterial infection and regulates myeloid cell function in a Zn-dependent manner. To what extent ZIP8 is instrumental in myeloid cell function requires further study. Using a novel, myeloid-specific, Zip8 knockout model, we identified vital roles of ZIP8 in macrophage and DC function upon pneumococcal infection. Administration of S. pneumoniae into the lung resulted in increased inflammation, morbidity, and mortality in Zip8 knockout mice compared with wild-type counterparts. This was associated with increased numbers of myeloid cells, cytokine production, and cell death. In vitro analysis of macrophage and DC function revealed deficits in phagocytosis and increased cytokine production upon bacterial stimulation that was, in part, due to increased NF-κB signaling. Strikingly, alteration of myeloid cell function resulted in an imbalance of Th17/Th2 responses, which is potentially detrimental to host defense. These results (for the first time, to our knowledge) reveal a vital ZIP8- and Zn-mediated axis that alters the lung myeloid cell landscape and the host response against pneumococcus.
Efficacy and safety of propranolol in infants with heart failure due to moderate-to-large ventricular septal defect (VSD-PHF study) – A prospective randomized trial
Authors: Ramakrishnan Sivasubramanian , Ghati Nirmal , Ahuja Ramandeep Singh , Bhatt Kinjal Niranjan , Sati Hem Chandra , Saxena Anita , Kothari Shyam Sunder
Published: August 2021

Aims :

The utility of beta-blocker therapy in infants with heart failure (HF) due to significant left-to-right shunt lesions is not known. The study aimed to assess the efficacy and safety of propranolol in infants with HF due to moderate-to-large ventricular septal defect (VSD).

Methods :

The prospective randomized trial included 80 infants with HF and moderate-to-large VSD, randomly allocated to receive either conventional therapy alone (n = 40) or propranolol plus conventional therapy (n = 40). The primary endpoint was a composite of all-cause mortality, hospitalization for HF and/or chest infection, and referral for surgery. The secondary clinical outcomes were the individual components of the composite endpoint. In addition, the patients were followed up to detect safety outcomes, for example, bronchospasm, bradyarrhythmia, and worsening HF symptoms.

Results :

The addition of propranolol therapy to the conventional medications did not result in significant improvement in the primary composite endpoint (32.50% vs. 52.50%; P = 0.07). There was a trend toward improvement, but the study is underpowered for this important question. However, propranolol therapy significantly decreased the risk of hospitalization (12.50% vs. 32.50%; P = 0.03) and worsening of Ross HF class (5.41% vs. 28.21%; P = 0.01) as compared to conventional therapy (estimated number needed to treat = 5). Propranolol did not result in any significant safety concerns in these infants except bronchospasm in an infant.

Conclusions :

Propranolol therapy in infants with significant left-to-right shunt may prevent worsening in HF symptoms and hospitalization and is well tolerated. However, it does not reduce mortality or need for surgery.
Monostotic fibrous dysplasia in a 10-year-old patient
Authors: Nayanar Gayatri , Reddy Mamatha G. S.
Published: August 2021

Fibrous dysplasia is a rare congenital bone disorder which manifests as a localized defect in osteoblastic differentiation and maturation with the replacement of normal bone with an abnormal scar-like fibrous connective tissue. It can be classified into monostotic and polyostotic variety with the former seen mostly in the adults and the latter common in children. Craniofacial involvement in case of fibrous dysplasia is very common, affecting maxilla more commonly than the mandible. This report, however, describes a case of fibrous dysplasia in a 10-year-old female patient who presented with a swelling of the left mandible.
Some remarks on segregation of $k$ species in strongly competing systems
Authors: Lanzara Flavia , Montefusco Eugenio
Published: August 2021

Spatial segregation occurs in population dynamics when

k

species interact in a highly competitive way. As a model for the study of this phenomenon, we consider the competition-diffusion system of

k

differential equations

-\Delta u_i(x)=-\mu u_i (x)\sum_{j\neq i} u_j (x), \quad i=1,\ldots,k

in a domain

D

with appropriate boundary conditions. Any

u_i

represents a population density and the parameter

\mu

determines the interaction strength between the populations. The purpose of this paper is to study the geometry of the limiting configuration as

\mu\rightarrow+\infty

on a planar domain for any number of species. If

k

is even we show that some limiting configurations are strictly connected to the solution of a Dirichlet problem for the Laplace equation.
Improved bounds for Hadwiger’s covering problem via thin-shell estimates
Authors: Huang Han , Slomka Boaz A. , Tkocz Tomasz , Vritsiou Beatrice-Helen
Published: August 2021

A central problem in discrete geometry, known as Hadwiger's covering problem, asks what the smallest natural number

N(n)

is such that every convex body in

\mathbb{R}^{n}

can be covered by a union of the interiors of at most

N(n)

of its translates. Despite continuous efforts, the best general upper bound known for this number remains as it was more than sixty years ago, of the order of

{2n \choose n}n\ln n

.

In this note, we improve this bound by a subexponential factor. That is, we prove a bound of the order of

{2n \choose n}e^{-c\sqrt{n}}

for some universal constant

c>0

.

Our approach combines ideas from [3] by Artstein-Avidan and the second named author with tools from asymptotic geometric analysis. One of the key steps is proving a new lower bound for the maximum volume of the intersection of a convex body

K

with a translate of

-K

; in fact, we get the same lower bound for the volume of the intersection of

K

and

-K

when they both have barycenter at the origin. To do so, we make use of measure concentration, and in particular of thin-shell estimates for isotropic log-concave measures.

Using the same ideas, we establish an exponentially better bound for

N(n)

when restricting our attention to convex bodies that are

\psi_{2}

. By a slightly different approach, an exponential improvement is established also for classes of convex bodies with positive modulus of convexity.
On Novel Aspects of Hydrogen Effects on Applied Stress - Coupled Micromagnetic Activity in a Mild Steel After Exposure to NaCl – Water Solution: A Combined Approach
Authors: Altzoumails Alexandros , Kytopoulos Victor
Published: August 2021

Hydrogen produced after exposure of a low – carbon steel to corrosive NaCl – Water solution may affect various its tensile mechanical and magnetic microstructural behaviour in a complex manner. This was investigated by introducing a relevant micromagnetic specific emission (ME) - response of this ferromagnetic material, where related processes and parameters of micromagnetic activity and mechanical response were implemented. In this manner, it was demonstrated that an increase in the hydrogen accumulation with corrosion time leads to an associated increase in the embrittling effect expressed by a substantial loss in the ductility of material. The competive and opposing effects of cumulative hydrogen, applied stress and plastic strain – induced microstructural damage were related to the specific ME- response parameter by which an increased magnetic hardening tendency of material with corrosion time was possible to establish. In this fashion and by using a stress as well as strain mode of presentation- aided combined approach, the complex interplay between micromagnetic activity, hydrogen accumulation and applied stress-strain was better revieled and analysed. It was also shown that the embrittlement is a product of hydrogen accumulation introduced by two highly localized processes. As such, accumulation occurs in two characteristic parallel ways: one of a common lattice diffusion and one of hydrogen transport and redistribution by moving dislocation towards the affected sites. Concerning the highly localized effects the dominating role of hydrogen – induced damage in form void initiation and growth over the hydrogen – assisted stress relief was reasonably demonstrated by using a simple modelling approach. Based on a mechanism of moving dislocation – assisted interaction between commulative hydrogen and magnetic domain walls, a Portervin – Le Chatelier – type micromagnetic process of a cooperative-corelated domain wall transport was proposed to explain certain subtle, quasiperiodic behaviour of ME- response. In the frame of the above findings the superior sensivity of ME – response compared to the mechanical one in early detecting cumulative hydrogen – assisted microstructural damage changes can be d educed.
Combined with Local Neighborhood Characteristics and Remote Sensing Image Fusion Method of C-BEMD
Authors: Fan Peili
Published: August 2021

For the sake of ameliorate the high resolution recognition capacity building remote sensing images, a remote sensing image fusion method based on local neighborhood characteristics and C-BEMD is advanced. The building remote sensing image acquisition model and the building remote sensing image picture element edge feature detection model are designed. The wavelet multi-scale denoising method is used to suppress the fuzzy spread of picture element feature points between image residual units, extract the geometric feature points of image sequence, and process the building remote sensing image block by block. The global residual learning and message fusion of building remote sensing image are implemented. The local neighborhood feature matching method is used to reconstruct the building remote sensing image region. Combined with the C-BEMD empirical mode decomposition method, the building remote sensing image fusion and feature point matching in affine region are implemented, and the block image template matching method is used to realize the automatic fusion and recognition of building remote sensing image. Simulation results show that this method has high precision in constructing remote sensing image fusion and good positioning performance in constructing remote sensing image feature points.
DESIGN AND PRODUCTION OF MULTI MATERIAL 3D PRINTER FOR SOFT ROBOTIC STRUCTURAL ELEMENTS
Authors: SELVİ Özgün , YETİM Murat , ÇIRNIK Samed Yiğit , İLTER Hasan Fehmi , AKAN Muhammed Enes , TOMAÇ Temel
Published: August 2021

With the latest technology, the development and interest in soft robots have gained speed. Flexible robots are generally produced by the casting method. This traditional production method cannot meet the required quality and production speed. For this, it is aimed to solve the problem by accelerating the production of robots without decreasing the quality. The most successful method for solving this problem is 3D printers, which could print multiple materials. It was decided to be used multi-materials printing, and the system design was carried out. This study aims to design and produce a multi-material 3D printer capable of printing non-conductive and conductive rapidly curing silicone that can be used in soft robotics and medical simulators. The electrical conductivity was achieved by mixing silicone and graphite powder. The parts in the designed system are also obtained by the additive manufacturing method. Test pieces were printed using the produced 3D printer. Specific tests have been carried out on the produced parts. Technical data such as strength, elasticity, electrical conductivity have been obtained.
Side-Channel Protections for Picnic Signatures
Authors: Aranha Diego F. , Berndt Sebastian , Eisenbarth Thomas , Seker Okan , Takahashi Akira , Wilke Luca , Zaverucha Greg
Published: August 2021

We study masking countermeasures for side-channel attacks against signature schemes constructed from the MPC-in-the-head paradigm, specifically when the MPC protocol uses preprocessing. This class of signature schemes includes Picnic, an alternate candidate in the third round of the NIST post-quantum standardization project. The only previously known approach to masking MPC-in-the-head signatures suffers from interoperability issues and increased signature sizes. Further, we present a new attack to demonstrate that known countermeasures are not sufficient when the MPC protocol uses a preprocessing phase, as in Picnic3.We overcome these challenges by showing how to mask the underlying zero-knowledge proof system due to Katz–Kolesnikov–Wang (CCS 2018) for any masking order, and by formally proving that our approach meets the standard security notions of non-interference for masking countermeasures. As a case study, we apply our masking technique to Picnic. We then implement different masked versions of Picnic signing providing first order protection for the ARM Cortex M4 platform, and quantify the overhead of these different masking approaches. We carefully analyze the side-channel risk of hashing operations, and give optimizations that reduce the CPU cost of protecting hashing in Picnic by a factor of five. The performance penalties of the masking countermeasures ranged from 1.8 to 5.5, depending on the degree of masking applied to hash function invocations.
Gestaltungswille und Algorithm Aversion – Die Auswirkungen der Einflussnahme im Prozess der algorithmischen Entscheidungsfindung auf die Algorithm Aversion
Authors: Gubaydullina Zulian , Judek Jan René , Lorenz Marco , Spiwoks Markus
Published: August 2021

Obwohl Algorithmen in vielen Anwendungsgebieten präzisere Prognosen abgeben als Menschen, weigern sich Entscheidungsträger häufig, auf Algorithmen zurückzugreifen. In einem ökonomischen Experiment untersuchen wir, ob das Ausmaß dieses als „Algorithm Aversion“ bekannten Phänomens reduziert werden kann, indem Entscheidungsträgern eine Einflussmöglichkeit auf die Ausgestaltung des Algorithmus eingeräumt wird (Einflussmöglichkeit auf den algorithmischen Input). Zusätzlich replizieren wir die Studie von Dietvorst, Simmons & Massey (2018). Darin zeigt sich, dass die Algorithm Aversion deutlich zurückgeht, sofern die Subjekte am Ende die Ergebnisse des Algorithmus – und sei es nur um wenige Prozent – verändern können (Einflussmöglichkeit auf den algorithmischen Output). In der vorliegenden Studie bestätigt sich, dass die Algorithm Aversion bei einer Einflussmöglichkeit auf den algorithmischen Output signifikant zurückgeht. Eine Einflussmöglichkeit auf den algorithmischen Input scheint allerdings nur bedingt geeignet, die Algorithm Aversion zu reduzieren. Die begrenzte Möglichkeit zur Modifikation des algorithmischen Outputs reduziert die Algorithm Aversion effektiver als die Möglichkeit, Einfluss auf den algorithmischen Input zu nehmen.
Estudo comparativo entre duas técnicas de ataque ácido na cerâmica, para cimentação de bráquetes: estudo in vitro
Authors: Quintana Patricio
Published: August 2021

O objetivo desta pesquisa in vitro é descobrir qual o melhor método de condicionamento ácido em superfícies de porcelana feldspática, que permitem melhor adesão aos bráquetes utilizando ácido fluorídrico (HF) em concentrações de 5% e 10% em diferentes tempos. O experimento foi realizado em 30 amostras divididas em dois grupos, as amostras após o condicionamento ácido, foram lavadas e secas. Na superfície das amostras foi aplicado o jato com óxido de alumínio para obter melhor rugosidade, logo após em todas as coroas foi utilizado o silano como agente de união, em seguida, os bráquetes metálicos foram cimentados com resina fotopolimerizável. As amostras foram submetidas a prova de resistência de Newton em uma máquina de teste universal. Os resultados revelaram maior resistência com ataque ácido em concentração de 10%, mas sem diferença estatisticamente relevante entre as amostras.
Estudio comparativo del módulo de elasticidad que presenta la fibra de carbono en comparación al PEEK (polieteretercetona) como materiales para la confección de subestructuras implanto soportadas
Authors: Regalado Berrú David Alejandro , Alvarado Rosero Katya Sofía
Published: August 2021

Evaluar mediante pruebas de flexión el módulo de elasticidad de la fibra de carbono y el PEEK a 2 mm y 1.5 mm de espesor. 20 cuerpos de prueba obtenidos a partir de 1 disco de fibra de carbono (CarbonCad 3D, DEI Itália) y de 1 disco de PEEK (TecnoMed Mineral 95H12, Zirkonzahn) de 2 mm y 1.5 mm de espesor, fueron subdivididos en 4 grupos (n: 5) y evaluados mediante un ensayo de flexión a tres puntos para determinar el módulo de elasticidad de cada material, los valores obtenidos fueron expresados en Gpa y analizados mediante un T de Student, ANOVA y Tukey. La estadística descriptiva determinó que el grupo 2 presenta una media de 19.11 Gpa, y el grupo 3 una media de 5.31 Gpa concernientes al módulo elástico. Los análisis ejecutados consideran las variables largo, ancho, espesor y tipo de material determinó una diferencia significativa entre las medias del módulo de elasticidad de la fibra de carbono a 1.5 mm muestra una diferencia significativa con los otros grupos (p = 0.02). La fibra de carbono presenta un módulo de elasticidad mayor al PEEK, donde a un espesor de 1.5 mm demostró los mejores resultados.
Estudio comparativo de propiedades del cemento Portland con diferentes opacificadores y MTA presentes en el mercado
Authors: Silva Giomara Catherine , Aznar Fábio Duarte da Costa , Aznar Adriana Rodrigues de Freitas
Published: August 2021

Objetivo fue investigar qué clase de MTA presente en el mercado ecuatoriano y el cemento Portland con diferentes aditivos es más radiopaco. Una muestra se constituyó de 6 placas de acrílico con dimensiones iguales (2.2 cm x 4.5 cm x 1 mm) a una película radiográfica con seis orificios de 5mm de diámetro cada uno, cada cemento fue mesclado de acuerdo con las especificaciones de cada fabricante y colocado en cada uno de los orificios: Proroot de la Densply, MTA White de la Angelus,  Biodentine de la Septodont, cemento Portland sin ningún aditivo, cemento Portland con 20% de sulfato de bario y cemento Portland con 20% de yodoformo, las placas fueron procesadas con el uso de radiovisiógrafo Fona y con un software se determinó la densidad radiográfica. Portland con yodoformo y Portland con sulfato de bario fueron los que presentaron mayor radiopacidad. Portland sin aditivos fue el que presento menor radiopacidad. En lo que se refiere a los MTA de casa comerciales Proroot presentó mayor radiopacidad y el Biodentine el que presentó menor radiopacidad. La radiopacidad es una propiedad que permite al MTA diferenciarlo en una radiografía de las estructuras limitantes, siendo Proroot el más radiopaco.
Eficacia de los aparatos de expansión rápida maxilar Hyrax y Haas
Authors: Vallejo Izquierdo Luis Alberto , Collantes Acuña Jenny Edith , Rockenbach Binz Maria Cristina , Vallejo Izquierdo Karla Kamila , Vallejo Izquierdo David Eduardo
Published: August 2021

Este estudio evalua la eficacia que tienen los disyuntores dento-muco-soportados Haas y dento-soportados Hyrax, en tratamientos para corregir deficiencias del arco transversal superior, siguiendo los protocolos de activación tuvieron efectos ortopédicos satisfactorios durante la expansión maxilar rápida. Los resultados no tuvieron mayor relevancia entre estos, sin embargo, se recomienda Hyrax por la asepsia para el paciente.
Técnica de SHIRA uma abordagem não convencional para exérese de mucocele: relato de caso
Authors: Gomes Pamela Cassia , Vieira Wellington Luiz , Recchioni Christian , Daruge Rudiney
Published: August 2021

Mucocele é uma lesão benigna pseudocística de retenção não neoplásica em glândulas salivares menores, comum em lábio inferior. Caracterizada pela ruptura do ducto glandular menor, ocorrendo extravasamento do muco ou saliva para o interior do tecido conjuntivo, de origem etiológicas diversas traumas ou inflamação de ducto salivar. Clinicamente nota-se lesão nodular de até 3 cm, circunscrito, de coloração translúcida ou vermelho-azulada, indolor e flutuante à palpação, com maior prevalência em lábio inferior. A modalidade convencional de tratamento inclui exérese da lesão, criocirurgia, eletrocauterização, marsupialização, injeção de corticóide, agentes esclerosantes, ablação por laser tem sido explorado. Porém os métodos de tratamento ditados na literatura são baseados nas características da lesão e podem variar de cirúrgico a conservador. Este estudo tem por finalidade relatar um caso clínico em que o paciente foi submetido a remoção cirúrgica de mucocele, com eliminação imediata dos sinais e sintomas relatados pelo paciente, pela técnica de Shira. Uma técnica não convencional, simples, barata e segura; pois garante a remoção completa da lesão, prevenindo a recidiva. A cirurgia apresentou pós-operatório e cicatrização satisfatória.
Implante imediato pós-exodontia em região de molar utilizando um novo implante com a técnica de preparo intrarradicular e preservação alveolar
Authors: Martins Sérgio Henrique Lago , Vieira Gustavo Henrique Apolinário , Bezerra Fabio Jose Barbosa , Ghiraldini Bruna , Souza Sérgio Luís Scombatti de
Published: August 2021

Exodontias em dentes posteriores tendem a ser negligenciadas por não estarem em área estética, resultando em maior perda tecidual pós extração. Ao lançar mão de abordagens imediatas há uma redução significativa nas reabsorções dos tecidos remanescentes, promovendo maior estabilidade nas reabilitações implantossuportadas no que se refere à altura da margem gengival, evitando coroas protética com sobrecontorno. O implante imediato associado a enxertia óssea pode ser uma opção viável na manutenção da arquitetura óssea. Assim, o objetivo deste relato é apresentar as vantagens da utilização de um novo implante com macro e nanoestrutura favoráveis à instalação imediata, em um caso clínico em região posterior de mandíbula. Paciente do gênero feminino, 42 anos de idade, sem comprometimento sistêmico compareceu à clínica odontológica para reabilitação da região do dente 46 com implante dentário, devido a destruição coronária. Optou-se pela instalação de um implante alta estabilidade primária (Epikut Plus®, S.I.N. Implant System, São Paulo, Brasil) associado a preenchimento do gap com enxerto ósseo xenógeno e selamento do alvéolo com cicatrizador em polímero termoplástico orgânico personalizável. Em um pós-operatório de 30 dias observou-se boa cicatrização tecidual e ganho de tecido queratinizado. O controle pós-operatório de 2 meses mostrou que houve uma perfeita manutenção tecidual, possibilitando um tecido gengival de qualidade para condicionamento da mucosa peri-implantar durante o período de provisionalização. Após 3 meses de tratamento foi solicitada radiografia periapical e confeccionada prótese parafusada sobre o implante. O implante com características adequadas permitiu o uso de técnica imediata à exodontia, com ótima estabilidade primária proporcionada pela macrogeometria, e formação óssea precoce devido à superfície nanoestruturada. Este conjunto de fatores possibilitaram uma reabilitação oral bem-sucedida em espaço de tempo reduzido.
Prevalence, Knowledge, Attitude and Preventive Practices Regarding Intestinal and Urinary Parasites among Primary School Children in a Rural Community in Ebonyi State, Nigeria
Authors: Alo C , Akamike IC , Agbo UN , Eze II , Madudueze UC , Okedo-Alex IN , Azuogu BN , Una AF , Elum PO , Ugochukwu C , Nwonwu EU , Ogbonnaya LU
Published: August 2021

Background: In developing countries, school age children continue to bear the greatest burden of intestinal parasites and schistosomiasis. This study determined the prevalence, knowledge, attitude and practice of preventive measures of intestinal and urinary parasitic infections among primary school children in Ebonyi, Nigeria

Methods: This cross-sectional study was carried out among 120 pupils in two primary schools in Igbeagu community in Ebonyi State, Nigeria. The pupils were purposively selected based on willingness to participate. Data were collected using questionnaires and stool and urine analyses. IBM-SPSS software version 20 was used for data analysis. Chi square test was done at 5% level of significance and 95% confidence interval. Descriptive and inferential analyses were performed.

Results: Mean age of respondents was 11.33±2.46, with majority between 6-13 years (102, 85.0%). There were 66 (55.0%) females and 104 (86.7%) respondents had good knowledge about intestinal parasites. Drinking contaminated water (104, 86.7%), using clean toilets (102, 85.9%) and diarrhea (105, 87.5%), were the most identified ways of transmission, prevention and symptomatology respectively. Overall, 117 (97.5%) had good attitude towards prevention and control of intestinal and urinary parasites. Respondents had good preventive practices against intestinal and urinary parasites with majority washing their hands with soap after defecation (100, 83.3%), and before eating (101, 84.2%).

Conclusion: This study reported high levels of knowledge, good attitude and preventive practices against intestinal and urinary parasites. No parasites were found. We recommend that caregivers be targeted for behaviour change interventions as this will augment the positive results already being reported.
All Mermaids are Black
Authors: Adisa-Farrar Teju
Published: August 2021

"When the giant wave comes washing over our bodies
Black people will become mermaids, and indigenoous people will become
seeds.

What will you become?"
​
Black people's connection to water is both an affirmation of life and a memorial of death. In Christina Sharpe's wake, Black life exists in the liminal space... on the currents left on the tops of water by ships. We have found our freedom in water, and have survived disaster by water. We live where the sea level is rising. Rather than understanding climate change as another form of destruction to Black life, what if we reimagine the middle passage as preparing us for life after the sea level rises and takes back the earth.
Industry 4.0 and Technology Adoption in The Garment Industry
Authors: Ariyani Luthfina , Hermawati Wati , Fizzanty Trina , Pitaloka Ardanareswari Ayu , Budiansyah Andi
Published: August 2021

Industry 4.0 is a major change that occurs in the manufacturing industry where the application of internet-based technology and information technology is key in forming a value chain network. This study aims to explore the application of industry 4.0 in the perspective of technology adoption theory, with a qualitative approach to five garment companies in Indonesia. Application of Industry 4.0 is seen in two aspects, namely technology for production and management, and Technology-Organization-Environment (TOE) Framework is used as a reference in analysing the factors that influence companies in adopting industry 4.0. The results of this study indicated that Indonesian garment companies have done a considerable technological transformation into more sophisticated direction. Adoption of new production machines, improvement in software systems, and the new and improved construction of factories that lead to the use of more modern technology were conducted at firm level. However, in general there are no companies that completely deploy industry 4.0. Several factors were identified as the determinants to this adoption process; in the technological context it consists of benefits and costs consideration; in the organizational context, it includes management support and workforce competence; while in the environmental context it consists of the product life cycle, global competition, and government support.
Determinant of Satisfaction and Repurchase Intention on E- commerce: A Case Study of Housewife in Indonesia
Authors: Apriyansyah Bahalwan , Dinni Salasatri Rafaa , Wibawa Berto Mulia
Published: August 2021

The development of a digital-based economy creates potential opportunity upon e-commerce platform service provider. Moreover, in pandemic situation shopping online support the large-scale social restriction. There are many well-known e- commerce brands in Indonesia both domestic and international establishment. The competition is in the red ocean which comprising many competitors who have strong leadership strikes penetration of the market. Innovation towards strategy to make consumer kept staying must be very important especially on how to lead them to do repeat order. However, many firms still neglect this factors. Switching behavior from the individual’s attitude towards the other e-commerce brands become threat for the certain e-commerce brand’s loyal customer. Therefore, this particular research focus on house-wife who fit-matched with the research profile respondent where mostly the house-wife plays significant role on decision and purchase making in a family. This research has purposes to analyze the factors that might influence the satisfaction and repurchase intention in e-commerce platform. In addition to that, analyze the correlation of brand leadership perception towards satisfaction and repurchase intention. Lastly, identify the characteristic of house-wife by looking at repeat order intention upon the brand leader. Conclusive-descriptive-multiple cross sectional research model by using statistical approach of PLS-SEM was conducted in this research. 265 housewives were recruited as respondent by using online survey across Indonesia. Study found that perceived value and popularity are directly related positively and significantly affect satisfaction and repurchase intention. Future research is encouraged to use longitudinal design in providing a holistic understanding of perceived brandleadership
Determinant Factors in Influencing Purchase Intention and Word of Mouth in Social Commerce: An Indonesia Case Study
Authors: Persada Satria Fadil , Wibawa Berto Mulia , Ashari Bella Harum , Lin Shu-Chiang
Published: August 2021

Social media becomes the new reality perceived in the present generation. Further, the role of social network has extended to which the people can do business transactions in its platform. The present research explores the role of purchase intention and word of mouth to understand better how consumers behave. A total of 9 factors are used in this research model. A total of 8 hypotheses are investigated. The present study uses factor analysis with the confirmatory type to see the correlational factors. The Structural Equation Model (SEM) is used to see the path and hypotheses validation. A total of 231 respondents have participated in this research. The result shows that 5 out of 8 hypotheses are accepted. The present model exposes a total of 70 and 51 percent R2 for both PI and WOM, which indicates the overall model can capture the excellent representation of consumer behavior assessment. Practical and implication insights are further discussed in this paper.