bluuebunny/crossref_metadata_2025 huggingface dataset:
Modelling of Escherichia coli removal by a low-cost combined drinking water treatment system
Authors: Siwila Stephen , Brink Isobel C
Published: May 2020

This work presents mathematical modelling of Escherichia coli (E.coli) removal by a multi-barrier point-of-use drinking water system. The modelled system is a combination of three treatment stages: filtration by geotextile fabric followed by filtration and disinfection by silver-coated ceramic granular media (SCCGM) then granular activated carbon (GAC) filtration. The presented models accounted for removal mechanisms by each treatment stage. E.coli was modelled as a microbial particle. E.coli inactivation by SCCGM was modelled using the Chick's, Chick-Watson, Collins-Selleck and complete mix system bacterial inactivation kinetic models, which were considered adequately representative for describing the removal. Geotextile removal was modelled using colloidal filtration theory (CFT) for hydrosol deposition in fibrous media. The filtration removal contributions by the SCCGM and GAC were modelled using CFT for removal of colloidal particles by granular media. The model results showed that inactivation by silver in the SCCGM was the main bacterial removal mechanism. Geotextile and GAC also depicted appreciable removals. The theoretical modelling approach used is important for design and optimization of the multi-barrier system and can support future research in terms of material combinations, system costs, etc. Collector diameter, particle size, filtration velocity and contact time were identified as critical parameters for E.coli removal efficiency.
Synthesis of Heterocyclic Compounds by Catalysts Supported on Nano-Magnetite (Fe3O4)-An Update
Authors: Sayyahi Soheil , Fallah-Mehrjardi Mehdi , Saghanezhad Seyyed Jafar
Published: May 2020

Magnetic nanoparticles have gained a great deal of attention from both academic and industrial
point of view, owing to their unique properties including high surface area, and superparamagnetism,
which enable them to be suitable for modification with many compounds and employing
them as a catalyst in organic reactions. In this mini-review, we have summarized the application of
surface-modified magnetite nanoparticles as magnetically recoverable catalysts in heterocyclic synthesis.
These catalysts include silica, biopolymer, acid, amine, transition metal, ionic liquid and metal
organic framework supported magnetite catalysts.
Recent Achievement in the Synthesis of Thiophenes
Authors: Xuan Duc D.
Published: May 2020

Thiophene derivatives are aromatic five-membered ring compounds made up of one sulfur
as heteroatom. These compounds are present in a large number of natural and unnatural compounds
with valuable bioactivities. Many of them have a wide range of applications in medicinal chemistry
such as antimicrobial, anticancer, antiparasitic, anti-inflammatory, and antihypertensive activities.
Some of them are famous drugs in the market nowadays such as Cefoxitin, Cephalothin, Cephaloridine,
Temocillin, tinoridine, tiaprofenic acid, tenoxicam, suproprofen and Raltitrexed. The use of
thiophene derivatives has also been found in other fields. The application of thiophenes in organic
materials thanks to their electronic properties has been reported. In organic synthesis, thiophenes
have also drawn the attention of chemists because of their values as intermediates. The employment
of thiophene derivatives in agrochemicals, flavors, and dyes has also been found. Due to diverse applications,
the synthesis of thiophene derivatives has attracted a lot of attention. Numerous known
synthetic methods such as Gewald and Fiesselmann methods have been modified and improved. Furthermore,
a large number of novel synthetic approaches to the synthesis of thiophenes have been developed.
This review will focus on considerable studies on the synthesis of thiophenes which date
back from 2012. In this review, we discussed recent achievement in the synthesis of thiophene derivatives.
Some established methods have been modified and improved, while other novel methods have
been discovered. Diverse catalysts were employed for these transformations. In some syntheses, reaction
mechanisms were also displayed. Many methods for the synthesis of thiophenes have been developed
recently. In the near future, more imaginative approaches for the synthesis of thiophenes will
be investigated to improve the efficiency and versatility or the use of environmentally friendly and
economical procedures for thiophene synthesis will be proposed. Application to natural product synthesis
and drug synthesis is probably the next challenge in the field.
Syngonium podophyllum Leaf Extract Mediated Synthesis and Characterization of Gold Nanoparticles for Biosensing Potential: A Sustainable Approach
Authors: Srivastava Saumya , Pandey Anjana
Published: May 2020

Background:

The existing methods of analyte detection by various biochemical processes
have certain drawbacks including nonlinearity and detection limits. The nanotechnology has paved a
way for the development of new devices i.e., nano-biosensors, by amalgamation of nanoparticles
with recognition elements. These nano-biosensors have the capabilities to overcome the drawbacks
of conventional methods.

Objectives:

Present study was planned to analyze the biosensing potential of indium tin oxide (ITO)
electrode modified with gold nanoparticles synthesized using aqueous extract of S. podophyllum.

Methods:

In present study, first time rapid green synthesis of gold nanoparticles from leaf extract of
Syngonium podophyllum is reported. The synthesized nanoparticles were then characterized physically
by UV-Visible spectroscopy, particle size analysis, fluorescent spectroscopy, Fourier transform
infrared spectroscopy and transmission electron microscopy (TEM), and HR (High resolution)-TEM.

Results:

The particles were observed to be in average size range of 30-70 nm. Furthermore, the ITO
electrode was modified with the prepared nanoparticles and analyzed by ellipsometry. The electrochemical
characteristics of the modified electrodes were analyzed by cyclic voltammetry.

Conclusion:

The results exhibited a higher current gain, thus signifying a higher signal amplification
at the electrodes and paves the way for their use in electrochemical nanobiosensors.
SALMAKA: Secured, Anonymity Preserving and Lightweight Mutual Authentication and Key Agreement Scheme for WBAN
Authors: Narwal Bhawna , Mohapatra Amar Kumar
Published: May 2020

Background:

It is paramount to secure the healthcare system from unauthorized users
and security attacks through appropriate security mechanisms as a break in the communication
process and which leads to leaked or blurred messages, which is totally unacceptable. Moreover,
mutual authentication is a core requirement for privacy protection as it is paramount to control
who is accessing the sensed data and whether they are authenticated or not. In addition to this, energy
efficiency is a major issue to be discussed.

Objective:

After examination of the present related schemes, we proposed a novel Secured,
Anonymity Preserving and Lightweight Mutual Authentication and Key Agreement Scheme
(SALMAKA) for two-hop WBAN topology; where the scheme mutually authenticates the
sensing nodes with the controller node in an anonymous, energy efficient manner and establishes
session key securely.

Method:

To corroborate the accuracy of the proposed scheme, Burrows-Abadi-Needham (BAN)
logic and Automated Validation of Internet Security Protocols and Applications (AVISPA)
simulator are used. Apart from this, informal security evaluation is also performed in detail.

Results:

To exhibit the practical application and performance of the proposed scheme, it is
compared with the existing related schemes and the results reveal that the proposed scheme
reduces energy consumption, processing cost and processing time significantly.

Conclusion:

A Secured, Anonymity Preserving and Lightweight Mutual Authentication and Key
Agreement Scheme (SALMAKA) for two-hop WBAN topology is propounded.
Рассеяние быстрых атомов и ионов кристаллической поверхностью. Ориентационные эффекты О б з о р
Authors: Малышевский В.С.
Published: May 2020

The features in the scattering of accelerated neutral atoms during sliding interactions with
crystalline surfaces are discussed. Particular attention is paid to the phenomenon of Rainbow
Scattering of neutral atoms upon their reection from an oriented crystalline surface. The
physical causes of the eects and the possibility of reconstructing from the experimental data
the two-particle polarization and dynamic ion-atom interaction potentials are considered.
Оптические переходы и фотолюминесценция в цилиндрической ядро/слой/оболочка гетероструктуре beta-CdS/beta-HgS/beta-CdS
Authors: Aрутюнян В.А. , Айрапетян Д.Б. , Казарян Э.М.
Published: May 2020

In the effective mass approximation, within the framework of a simple two-band model, the states of charge carriers in the HgS quantizing layer of the cylindrical core/shell/shell β-CdS/β-HgS/β-CdS heterostructure are theoretically considered. The consideration was carried out for various intervals of geometric dimensions of sample, when the corresponding regimes of size quantization for charge carriers were realized in the layer. For each case, the electrostatic interaction between the electron and the hole is taken into account with its own specifics, and depending on the size of the sample, the corresponding values of the ground state energy of the pair are obtained. In each case, interband optical transitions in the sample and photoluminescence were also considered. It is shown that, in each individual case, taking into account the electrostatic interaction leads to a shift in the threshold frequency of interband absorption and luminescence to the short-wavelength region, and the frequency itself is determined by the geometric dimensions of the sample.
Использование усреднения по полям взаимодействия для построения приближенных методов в модели Изинга разбавленного магнетика
Authors: Сёмкин С.В. , Смагин В.П. , Люлько В.И.
Published: May 2020

Abstract The method of averaging over interaction fields has been analyzed as applied to the problems of statistical physics. This method has been theoretically justified as applied to a spin cluster. Based on the general relations obtained, approximate solutions for the bond-diluted Ising model are found. These approximate solutions are compared with the exact solution for a one-dimensional chain of bond-diluted Ising spins.
Формирование регулярных слоистых структур при твердотельных фазовых переходах с изменением концентрации
Authors: Чеврычкина А.А. , Бессонов Н.М. , Корженевский А.Л.
Published: May 2020

The self-oscillation dynamic of an interface is calculated in the framework of the one-dimensional capillary-wave model. The parameters of a periodic layered impurity microstructure are obtained. This microstructure arises as a result of a solid-state phase transition with a change in concentration that occurs when a moving temperature gradient is applied.
Фазовые переходы и термодинамические свойства модели Поттса с числом состояний спина q=4 на решетке кагоме
Authors: Муртазаев А.К. , Ризванова Т.Р. , Рамазанов М.К. , Магомедов М.А.
Published: May 2020

Phase transitions and thermodynamic properties of the 2D ferromagnetic Potts model with the number of spin states q = 4 on a kagome lattice are investigated by the Mote Carlo method based on the Wang-Landau algorithm. The orders of the phase transitions are investigated using the Binder fourth-order cumulant method and histogram analysis of data. It is established that a first-order transition is observed in the model being investigated.
О диполь-дипольном взаимодействии атомов в слоях, адсорбированных на трехмерных и двумерных полупроводниках
Authors: Давыдов С.Ю. , Зубов А.В.
Published: May 2020

Simple model schemes for the account of the dipole-dipole repulsion in sub-monolayers on 3D and 2D semiconductor substrates are proposed. General expressions for the band and local states contributions to the charge transfer between adlayer and substrate are given in the function of substrate coverage with adatoms. Analytical estimations are fulfilled for the number of the specific characteristic cases.
Влияние гамма-облучения на фазовые переходы в политетрафторэтилене, допированном диоксидом кремния растительного происхождения
Authors: Егоров В.М. , Якушев П.Н. , Арсентьев М.А. , Смолянский А.С.
Published: May 2020

Abstract The effect of gamma irradiation and doping with silicon dioxide on the first-order solid-state phase transition in polytetrafluoroethylene is studied by the differential scanning calorimetry method. A quantitative analysis of the profiles of the heat capacity peaks is carried out on the basis of the theory of diffuse phase transitions. It is shown that the elementary volume of the phase transformation depends on the γ irradiation and the concentration of silicon dioxide.
Management and Treatment of Concussions via Tele-Concussion in a Pediatric Setting: Methodological Approach and Descriptive Analysis (Preprint)
Authors: Caze II Todd , Knell Gregory P , Abt John , Burkhart Scott O
Published: May 2020

BACKGROUND

Approximately 2 million children in the United States sustain a concussion annually, resulting in an economic impact as high as US $20 billion. Patients who receive treatment at concussion specialty clinics, versus primary care, experience faster recovery, thereby reducing patient burden and subsequent medical-related costs. Accessibility to specialty clinics is typically limited by the availability of in-office visits. This is particularly relevant in light of the severe acute respiratory syndrome coronavirus 2 pandemic and subsequent guidance to eliminate all non–medically necessary in-clinic visits. Telehealth has been used to effectively deliver in-clinic care across several disciplines including psychiatry, psychology, and neuropsychology. However, a model of telehealth delivered concussion assessment, treatment, and management has not been established.

OBJECTIVE

The purposes of this paper are to describe a pediatric concussion specialty clinic’s experiences in delivering telehealth concussion services and to provide preliminary descriptive data on a sample of pediatric telehealth patients with concussions.

METHODS

The specialty pediatric concussion clinic described here began providing telehealth services in 2019 and is part of the largest and fastest-growing telehealth hospital network in the United States. The clinical care process will be described, including accessing the telehealth platform, assessment during the initial appointment, injury management including communication with relevant patient stakeholders (eg, parent or guardians, athletic trainers), dissemination of rehabilitation exercises, and nature of follow-up visits. Descriptive data will include patient demographics, the radius of care, the time between the date of injury and initial visit, the average number of follow-up visits, and days until medically cleared for return-to-learn and return-to-play.

RESULTS

The analytic sample included 18 patients with concussions who were seen for all of their visits via telehealth between August 2019 and April 2020. The mean age of the sample was 14.5 (SD 2.5) years. The radius of care was a median of 17 (IQR 11.0-31.0) miles from the clinic with a median time between injury and the first visit of 21 (IQR 6.0-41.5) days. The mean number of visits was 2.2 (SD 0.8) with a median days between visits of 5.4 (IQR 3.0-9.3) to manage and treat the concussion. Of the 18 patients, 55.6% (n=10) were medically cleared for return-to-learn or -play in a median of 15.5 (IQR 11.0-29.0) days.

CONCLUSIONS

Limited access to health care is a well-understood barrier for receiving quality care. Subsequently, there are increasing demands for flexibility in delivering concussion services remotely and in-clinic. This is the first paper to provide a clinically relevant framework for the assessment, management, and treatment of acute concussion via telehealth in a pediatric population.
Fight a more contagious global epidemic-misinformation of COVID-19 (Preprint)
Authors: Gong Yimiao , Bao Yanping , Yuan Kai , Lu Lin
Published: May 2020

UNSTRUCTURED

The world today is not merely facing one kind of epidemics, coming together with the COVID-19 epidemic, the global misinformation epidemic is even more contagious. The innocent publics are not only suffering from the COVID-19 epidemic, but are also hurt by the “misinfo-epidemic”, which is very distressing. In view of the present situation, we call on more publics’ participation in fighting against the “misinfo-epidemic” under correct guidance of national governments and leaders. We call on people around the world to believe in science, in fact and in each other and to be proactive in fighting against both the COVID-19 epidemic and the “misinfo-epidemic”.
“Little Glass Slippers” on the American Silver Screen: An Inquiry into Hollywood Adaptations of Charles Perrault’s “Cinderella”
Authors: Koshy Minu Susan
Published: May 2020

Considered as a form of translation, adaptations involve intersemiotic transfers of stories, novels and poems into the symbolic system of the cinema. This process could be construed as an attempt on the part of the “translators” to “consume and erase the memory of the adapted text or to call it into question” as also “pay tribute by copying” (Hutcheon, p. 7). Adaptations of folktales present a particularly challenging and at the same time, interesting task in that unlike novels or short stories, which are mostly in the written form and hence possess a fixed plot, folktales are mostly in the oral tradition and thus present regional and chronological variations. This accounts for the multiple adaptations of “Cinderella” or “The Little Glass Slipper”, one of the most popular tales by Charles Perrault, across and more importantly, within cultures, during different historical periods. In this paper, I attempt a diachronic comparative study of multiple adaptations of “Cinderella”, focusing on different ‘versions’ of the tale embodied in films produced in the USA, from the early 20th century to the contemporary times. The study would take into account the issues of race, gender, class as also the varying themes, keeping in mind the historical conditions under which the films were produced.
THE RECENT UPDATE OF DEOXYARBUTIN: A SKIN DEPIGMENTATION AGENT WITH TYROSINASE INHIBITION TARGETING
Authors: MUCHTARIDI MUCHTARIDI , DEWI MENTARI LUTHFIKA
Published: May 2020

Melanin is produced through the process of melanogenesis, which serves to protect the skin from the damaging effects of UV radiation. Abnormal accumulation of melanin will aesthetically disturb even interfere with health. One of the clinical manifestations of abnormal accumulation of melanin is the incidence of melasma. Some of the tyrosinase enzyme inhibitor agents most widely used as Hydroquinone, Kojic acid and Arbutin do not give satisfactory results and cause serious side effects. Hydroquinone is known to cause ochronosis exogenous and cytotoxic. Kojic acid is known to cause allergies and mutagenic, while arbutinisis is known to have cytotoxic properties lower than hydroquinone, but less satisfactory depigmentation activity. There was a compound that has been synthesized by removing the hydroxy group of arbutin, known as deoxyarbutin (4-[Tetrahydro-2H-Pyrans-2-yl) oxy] phenol). Deoxyarbutin (dA) shows Ki 10-fold is lower than hydroquinone and 350-fold is lower than arbutin. IC50dA is 17.5+0.5 µmol/l, while the IC50 hydroquinone is 73.7+9.1 µmol/l. In terms of security, dA indicates that cell viability is 95% higher than hydroquinone. However, dA is thermolabile and photolabile. Several studies have shown satisfactory results to improve the stability of dA, that these compounds are considerable potential for further development as a depigmentation agent. The aim of this review is to describe how the potency of dA as a tyrosinase inhibitor interferes melanogenesis process through the latest depigmentation agent, its safety, efficacy and stability.
DEVELOPMENT OF NANOEMULSION TO IMPROVE THE OCULAR BIOAVAILABILITY AND PATIENT COMPLIANCE IN POSTOPERATIVE TREATMENT USING INDOMETHACIN
Authors: AJMEERA DIVYA , MANDA SARANGAPANI , JANAPAREDDI KRISHNAVENI , KOLLURI SUSMITHA
Published: May 2020

Objective: To develop a new cationic nanoemulsion (NE) for ophthalmic delivery of indomethacin (IND) to improve the permeability and retention time of formulations, thereby improving the drug's ocular bioavailability.

Methods: Based on the solubility profile of indomethacin in various solvents, captex 8000 was selected as oil phase, span 20 as a surfactant and tween 20 as co-surfactant to construct pseudo ternary phase diagrams and nanoemulsion region was recognized. Sonication was used as the method of NE preparation. Optimization was done using 32 factorial designs by considering the oil and the ratio of surfactant to co-surfactant (Smix) quantities as independent variables and evaluated for different physicochemical properties. Ex vivo transcorneal permeability was studied using bovine cornea, the In vivo drug pharmacokinetics of optimized NE and marketed formulation were assessed in rabbit aqueous humor and also in plasma.

Results: The mean globule size, zeta potential, viscosity, refractive index, pH, surface tension and the osmolarity values for the prepared indomethacin nanoemulsions (IND-NEs) were found between 129.8±1.1 to 191.4±1.6 nm,+13.20±4.6 to+23.45±4.82, 15.3±0.1 to 32.7±0.0 mPas, 1.346±0.007 to 1.386±0.005, 5.5±0.4 to 6.9±0.9, 32.0±2.6 to 52.3±3.4 mN/m and 303-395 mOsm/l respectively and all these values found to be falling under the recommended values for ophthalmic use. From the In vitro release studies, it was found that the IND-NEs exhibited sustained drug release with 67.91±2.01 to 95.90±1.93 % drug release at 24h when compared to the drug solution which showed 99.81±5.21 % drug release within 2h. The Ex vivo drug permeation through the corneal membrane at 4h from the optimized NE and drug solution was found to be 524±1.5 µg/cm2 and 175±2.6 µg/cm2 respectively. Further, the optimized NE was found to be nonirritant with the lowest ocular irritation potential (Iirr) of 1 towards the rabbit's eyes. The area under the drug concentration vs. time curve for 24h (AUC (0–24h)) for optimized NE and the marketed formulation was found to be 1514.99 ng/ml/h and 974.14 ng/ml/h in aqueous humour; 2266.83 ng/ml/h and 778.15 ng/ml/h in plasma respectively.

Conclusion: Due to its improved corneal absorption and prolonged drug release along with less systemic absorption, the optimized NE offers an effective postoperative treatment with increased ocular bioavailability and improved patient compliance with a decrease in the number of installations per day and a decrease or disappearance of systemic side effects of IND.
A Qualitative Evaluation of an Interprofessional Collaboration between an Academic Organization and Hospital Foundation Trust
Authors: Tapson Kit , Walters David M. , Daykin Norma
Published: May 2020

Background: Research recognizes that collaborative working between academic organizations and clinical institutions may help realize the effective delivery of patient care. Yet, few studies report on the processes required to effect the necessary changes. Ths article reports on a research process that was delivered by a team of academics and clinicians that aimed to illuminate processes of interprofessional collaboration.Methods and findings: Semi-structured interviews were conducted with eight participants selected from both a university and a foundation trust. Data were analyzed using thematic analysis.Conclusions: The fruits of interprofessional practice and collaboration have beneficialeffects, especially for the patient. These are realized through the collegialefforts of stakeholders from each organization, where consistent effort, cooperativeand inclusive actions facilitate participative agency, resulting in rich relationships.
Thermo-responsive hydrogels based on poly(N-isopropyl-acrylamide) and hyaluronic acid cross-linked with nanoclays
Authors: Mirkovic Ilinka , Nikolic Marija , Ostojic Sanja , Maletaskic Jelena , Petrovic Zoran , Djonlagic Jasna
Published: May 2020

Semi-interpenetrating polymer networks (SIPN) based on thermoresponsive poly(N-isopropylacrylamide) (PNIPA) and water-soluble sodium salts of linear hyaluronic acid (Na-HA) were physically cross-linked with synthetic nanoclay (laponite XLG). PNIPA hydrogels with different cross-linking densities and Na-HA concentrations were synthesized by in situ free-radical redox polymerization. The structure and heterogeneity of the semi-IPN hydrogels were examined by SEM and XRD. The content of clay incorporated in the gel was determined by TGA. DSC measurements showed that volume phase transition temperature and its enthalpy varied with the clay and hyaluronic acid content. SIPN hydrogels containing negatively charged polyelectrolyte, Na- HA, exhibited higher Qe and faster deswelling rates than the corresponding PNIPA NC hydrogels. The presence of the anionic Na-HA polymer reduced the storage modulus, indicating a weakening of the hydrogel network structure, especially at lower clay contents. The nanocomposite hydrogels exhibited high tan ? values, which increased with increasing Na-HA content.
Obstructive sleep apnoea, a risk factor for cardiovascular and microvascular disease in patients with type 2 diabetes mellitus: findings from a population-based cohort study
Authors: Adderley Nicola J , Subramanian Anuradhaa , Toulis Konstantinos , Gokhale Krishna , Taverner Thomas , Hanif Wasim , Haroon Shamil , Thomas G Neil , Sainsbury Christopher , Tahrani Abd A , Nirantharakumar Krishnarajah
Published: May 2020

Objective: To determine risk of cardiovascular diseases (CVD), microvascular
complications and mortality in patients with type 2 diabetes who subsequently
develop obstructive sleep apnoea(OSA) compared to patients with type 2 diabetes
without a diagnosis of OSA.

Research Design and Methods: An age-, sex-, body mass index-
and diabetes duration-matched cohort study using data from a UK primary care database
from 01/01/2005 to 17/01/2018. Participants aged ≥16 years with type 2 diabetes
were included. Exposed participants were those who developed OSA after their
diabetes diagnosis; unexposed participants were those without diagnosed OSA. Outcomes
were composite CVD (ischaemic heart disease(IHD), stroke/transient ischaemic
attack(TIA), heart failure(HF)); peripheral vascular disease(PVD); atrial fibrillation(AF);
peripheral neuropathy(PN); diabetes-related foot disease(DFD); referable
retinopathy; chronic kidney disease(CKD); all-cause mortality. The same
outcomes were explored in patients with pre-existing OSA before a diagnosis of type
2 diabetes versus diabetes without diagnosed OSA.

Results: 3,667 exposed participants and 10,450 matched controls were included.
Adjusted hazard ratios for the outcomes were: composite CVD 1.54(95%CI 1.32,1.79);
IHD 1.55(1.26,1.90); HF 1.67(1.35,2.06); stroke/TIA 1.57(1.27,1.94); PVD 1.10(0.91,1.32);
AF 1.53(1.28,1.83); PN 1.32(1.14,1.51); DFD 1.42(1.16,1.74); retinopathy
0.99(0.82,1.21); CKD (stage 3-5) 1.18(1.02,1.36); albuminuria 1.11(1.01,1.22); all-cause
mortality 1.24(1.10,1.40). In the prevalent OSA cohort the results were similar
but some associations not observed.

Conclusions: Patients with type 2 diabetes who develop OSA are at increased risk of CVD,
AF, PN, DFD, CKD, and all-cause mortality compared to patients without diagnosed
OSA. Patients with type 2 diabetes who develop OSA are a high-risk population
and strategies to detect OSA and prevent cardiovascular and microvascular
complications should be implemented.
RETAIL COMPANY STRATEGY FACING INDUSTRIAL REVOLUTION 4.0
Authors: Khairawati Salihah
Published: May 2020

Facing changes in business environment, the companies should make adjustments in their operations. The role of information technology encourages everything in the internet (internet of things), which also has an impact on the retail industry. Retail companies improve themselves in facing changes in their industrial environment. The purpose of this article is to examine some retail businesses that have developed online shops in the current era and to formulate the retail company strategies to face the industrial revolution including redesigning business models and dynamic abilities, human resource readiness, developing features and shopping applications at retail shops and attractive promo offers for consumers. It is hoped that this study can provide input for retail shop managers in developing their business strategies
TPACK Capability Preservice Teachers Civic Education in the Era of Industrial Revolution 4.0
Authors: Nursyifa Aulia , Rahmadi Imam Fitri , Hayati Eti
Published: May 2020

This research aims to determine the ability of the Technological Pedagogical Content Knowledge (TPACK) preservice teachers Civic education Pamulang University. The method used in this research is a quantitative method with a survey approach. The research subject amounted to 63 students. The results showed that the ability of TPACK has a very important role in improving the ability of preservice teachers in the revolution of the 4.0 industry, besides the analysis results demonstrated the ability of TPACK Preservice teachers Civic education on group A superior to the group B. Therefore, TPACK's capabilities need to be upgraded and supported by various parties to create an education that can produce future qualified teachers.
ETHNOCONSTRUCTIVISM E-MODULE TO IMPROVE PERCEPTION, INTEREST, AND MOTIVATION OF STUDENTS IN CLASS V ELEMENTARY SCHOOL
Authors: Asrial Asrial , Syahrial Syahrial , Maison Maison , Kurniawan Dwi Agus , Piyana Suci Okta
Published: May 2020

This study aims to develop instructional media in the form of teaching materials in the form of electronic modules by using the Pageflip Professional 3D software application for fifth-grade elementary school students. The method in this study uses the Research and Development (R & D) method that adapts the ADDIE development model (Analysis, Design, Development, Implementation, Evaluation). Based on the results of the assessment in this study on the questionnaire obtained the frequency perception of 28 students with a percentage of 93.4% in the sufficient category. For the interest questionnaire to get frequency as many as 24 students with a percentage of 80.1% in the good category. While the motivation questionnaire obtained a frequency of 28 students with a percentage of 93.4% in the good category. The resulting data shows that the electronic ethnocontructivism module based on the Pageflip Professional 3D software developed can be used as a teaching material in the learning process.
Technology Transformation and Its Impact on Lecturer’s Performance
Authors: Arifin S. , Sukmawidjaya M.
Published: May 2020

The interest to do this research is to investigate the impact of technology transformation on the lecturer's performance. The terms technical performance in this research are divided into five (5) indicators: engaging and empowering learning, and teaching with technology, leadership, accommodation (syllabus and lesson scheme), and infrastructure provided by the campus. The findings indicate that many lecturers have a lack of knowledge in technology transformation.  However, all lecturers must have it for the teaching and learning process in the 21st-century. The research methods used were descriptive analysis, observations, quantitative and semi-structured qualitative research, and the questionnaires done using Google Form. There were sixty-four (64) respondents in this research. The result shows that the use of technology proves its significant impact on the lecturer's performance.
A “MODERNIZAÇÃO” POLÍTICA DA IGREJA CATÓLICA NO BRASIL (1850-1930): UMA APROXIMAÇÃO A PARTIR DA “TEORIA DA AÇÃO COMUNICATIVA”
Authors: Coutinho Sérgio Ricardo
Published: May 2020

Neste artigo, apresentamos o itinerário de “modernização” política trilhado pela Igreja Católica no Brasil, particularmente o episcopado brasileiro, da segunda metade do século XIX até o fim da Primeira República (1930), a partir de um “processo de aprendizado de tipo comunicativo” diante da resolução dos “conflitos de ação moralmente relevantes” na sua relação com o Estado. O conjunto do episcopado brasileiro, ao longo de um período de 80 anos (1850-1930), liberando “recursos comunicativos”, passou por uma profunda renovação dos seus princípios sociais de organização. Isso se deu quando os bispos assumiram a colegialidade como este “princípio de organização”. Para que isso se realizasse, foi necessário que ocorresse um processo de aprendizado de tipo comunicativo.
Changing global production network and its implication on Belt and Road Initiative
Authors: Chhetri Prem , Gekara Victor , Li Shaorong , Lee Jun Yeop
Published: May 2020

This editorial establishes the broader context for debating the great global convergence of world economic systems and the role of Belt and Road Initiative in shaping the reconfiguration of key global transport nodes and trade corridors. The interwoven relationships between various aspects of technological transformation, supply chain integration and demographic restructuring in shaping the global value chain and integrated production networks are theoretically and empirically probed in this special issue. The importance of technological innovation, and structural reforms are highlighted to help businesses to sustainably manage the growing supply chain complexity and the likely disruptions during the fourth industrial revolution.
Representaciones en Física: construcción y validación de un cuestionario para la Enseñanza Media Superior
Authors: Flores-Camacho Fernando , Gallegos-Cázares Leticia , Lima González Cynthia
Published: May 2020

Este trabajo da cuenta de la construcción de un cuestionario para determinar las representaciones de conceptos y procesos físicos en estudiantes de bachillerato. La elaboración del instrumento pasó por diferentes etapas de revisión y aplicación entre grupos de alumnos y expertos en Física. La versión final se aplicó a una muestra de 120 alumnos de 6o. año de bachillerato del Colegio de Ciencias y Humanidades de la UNAM. El instrumento transitó por diversos criterios de validez (pertinencia, inteligibilidad, completitud y estructura equivalente) y pruebas de confiabilidad (Alfa de Cronbach y Modelo de Crédito Parcial de Rasch), de tal manera que se obtuvo un instrumento confiable para caracterizar diversos tipos de representaciones externas, como son las respuestas escritas, los esquemas, las gráficas y los dibujos. Los resultados muestran que este tipo de cuestionarios puede contribuir a los nuevos enfoques en enseñanza de las ciencias centrados en las construcciones representacionales y en la dinámica de cambio del pensamiento de los estudiantes.
Effects of aerated and non-aerated biofilters on effluent water treatment from a small-scale recirculating aquaculture system for Nile tilapia (Oreochromis niloticus L.)
Authors: Gichana Zipporah , Liti David , Drexler Silke-Silvia , Zollitsch Werner , Meulenbroek Paul , Wakibia Joseph , Ogello Erick , Akoll Peter , Waidbacher Herwig
Published: May 2020

Most recirculation aquaculture systems (RAS) use aerated biofilters to maintain suitable water quality for fish production. However, application of non-aerated biofilters may provide opportunities to lower aeration costs, water usage and concentration of all nitrogenous wastes in the effluent water. Our study aimed at comparing the biofiltration performance characteristics of two biofilters: a conventional aerated biofilter and a non-aerated biofilter receiving the same effluent water from a small-scale RAS. The two biofilters were evaluated in triplicate and tested concurrently for seven months. Water quality parameters were monitored at the biofilter inlets and outlets and in the fish tanks. At the beginning of the experiment, the concentration of ammonia at the two biofilter outlets were not significantly different. However, the concentrations decreased with time reaching mean values of 1.33 ± 0.02 mg L−1 and 1.23 ± 0.21 mg L−1 N-NH4 in the aerated and non-aerated biofilters, respectively. Whereas phosphorus and nitrate levels were significantly high in the aerated biofilter. There was no significant difference in the growth of fish between the aerated and non-aerated biofilters. The results suggest that non-aerated biofilters can be as effective as aerated biofilters in maintaining suitable water quality for O. niloticus production.
Creating togetherness in a historically divided maternity care system / Zusammengehörigkeit in einem historisch gespaltenen geburtshilflichen Versorgungssystem herstellen
Authors: Molenaar Joyce M. , Lips Sarah R. , Teunissen Pim W. , Vermeulen Gea , Schuitmaker-Warnaar Tjerk Jan
Published: May 2020

Improving collaboration in Dutch maternity care is seen as essential to improve continuity of care and thereby safety, client satisfaction, and health outcomes. This study aims to monitor and evaluate whether the regional Maternity Care Network Northwest Netherlands (MCNNN) and its local multidisciplinary obstetric partnerships contributed to collaboration. This mixed-method study followed the methodology of reflexive monitoring in action. Data were collected from 2014 to 2016 through interviews (n=73), questionnaires (n=430), and reflection sessions (n=4) and analyzed inductively and deductively based on a model for interprofessional and interorganizational collaboration. The findings outline (1) MCNNN-activities, (2) experienced collaboration within obstetric partnerships, and (3) MCNNN as supporting structure. The findings showed improvements on both the relational and organizational level of interprofessional and interorganizational collaboration. The MCNNN’s meetings, products, and research projects facilitated knowledge development and dissemination and its obstetric partnerships fostered contact and deliberation among maternity care professionals. However, collaborative challenges were also experienced, including mistrust and difficulties in information sharing, influenced by lacking financial and organizational facilitation. The MCNNN could improve its supporting role in the system innovation toward integration in maternity care by means of a further transformation to a knowledge network that is focused on reflexively overcoming collaborative challenges at all levels in the maternity care system.
On-site inspections: the shift from forms to digital capture
Authors: Rolfsen Christian Nordahl , Lassen Ann Karina
Published: May 2020

The building, construction, and real estate industry is undergoing a major transition with traditional ways of working being replaced by novel three-dimensional modeling technologies. Such transitions take place incrementally as more and more actors see the advantages. While new systems (e.g., building information modeling) have become increasingly diffused in the industry, many practices have been left intact. On-site inspections using the old method of filling out forms for the registration of errors and omissions are eventually replaced by defect management systems, where an app on a mobile device is used to take a photo, note position, and write notes, which are directly sent to the responsible people involved. A case study was conducted in a large residential project under completion by a contractor. Project managers and skilled workers were introduced to a specific app and given the opportunity to try it out. Data were subsequently collected based on a series of qualitative interviews conducted with the on-site personnel. This was analyzed according to the technology acceptance model, a theory of user acceptance of new information technologies. Our contribution is that we compare the technology acceptance of new and existing defect management methods and unearth their relative advantages, while registering how users’ perceptions of new technology affect their intention to use as well as their actual continued use of the technology. This work is important for managers planning development of their on-site management tools, enabling them to run their projects more efficiently.
Detecting unbalanced bids via an improved grading-based model
Authors: Polat Gul , Turkoglu Harun , Damci Atilla , Akin Firat Dogu
Published: May 2020

Unbalanced bidding, also known as skewed bidding, is the process of increasing and/or decreasing the prices of various bid items without altering the total offered bid price. Bids can be unbalanced either mathematically (front-end loading) or materially (quantity error exploitation). Owners should be very careful when evaluating the tenders as awarding a contract to an unbalanced bid may result in severe cost overruns because the prices of those items do not reflect their true costs and markup allocations. Unbalanced bidding is still a contentious issue in the construction industry. While some researchers consider it as a legal bidding strategy in such a fierce competitive business environment, others view it as an unethical practice and claim that unbalanced bids should be disqualified. Studies regarding unbalanced bidding can be categorized into two groups: (1) the ones focusing on detecting or preventing this practice to help owners; and 2) the ones focusing on optimizing unbalanced bidding to help contractors. This study aims to develop a model, which consists of eight grading systems, to assist owners in detecting materially unbalanced bids. The proposed model is the improved version of the previous model, which was composed of five grading systems. In order to demonstrate how this grading-based model can be used by owners, an illustrative example is presented. It was found that owners can easily and successfully detect unbalanced bids via the proposed model.
Industrialization of construction: Implications on standards, business models and project orientation
Authors: Andersson Niclas , Lessing Jerker
Published: May 2020

Digitalization has the potential to radically change the way buildings are designed, produced, and operated. In this digital transformation, the establishment of information standards play an important role. However, despite substantial efforts in the development of both technology and standards, these are not yet fully adopted in construction. This study aims to review the adoption of standards and to examine whether suppliers of prefabricated concrete elements have transformed their business models. The purpose is to strengthen the understanding of the interplay between the adoption of standards and business model renewal. Driving forces for the adoption of standards are identified and coupled with suppliers’ arguments for business model protection and renewal, explained in terms of a market and a hierarchy approach. The market approach embraces the adoption of open standards for improved competition and information exchange along with the further adoption of industrialized construction. This study identifies that common standards for precast elements are lacking, which leads to waste in terms of structural re-design and liability uncertainties. On the other hand, a market situation with open standards is challenging for suppliers to utilize and benefit from their existing operational platforms. Suppliers of precast elements strive for a hierarchy approach, that is, the adoption of the whole value chain, to protect their market position and continue offering structural frameworks and services. This concurs with arguments for industrialized construction, which emphasize the benefits of continuous improvements. This study contributes to the understanding of drivers and impediments for the uptake of standards versus business model renewal in construction.
On Regional Aspects of Vertical Distribution of Montenegrin Population
Authors: Lješević Milutin , Doderović Miroslav
Published: May 2020

The coordinates of 18°26′ and 19°22′ east latitude and 41°52′ and 43°32′ north longitude set geographic position of Montenegro. The total length of its land borders is 614 km. The border alongside Croatia is 14 km long, alongside Bosnia and Herzegovina 225 km, alongside Serbia 20 km, and alongside Albania 172 km of the state border (partly across the Scadar lake and alongside the river Bojana). There is a 100 km of air distance between the furthest points at the sea. The factual length of the Montenegrin coast is about 280 km, which makes the serrated coefficient of 2.8. Montenegro is in proportion to its territory and population the smallest of all ex-Yugoslav republics. It spreads over the area of 13,812 square kilometres which makes 5.4% of ex-Yugoslav territory. According to 2003 census, 620.145 citizens lived in 1240 settlements, which were 45 citizens on a square kilometre. Out of 21 municipalities six are in the coastal region. The largest municipality in Montenegro (as well as in both ex-Yugoslavia and in the State union of Serbia and Montenegro) is Nikšić with 2,065 square kilometres, and the smallest is Tivat with 46 square kilometres. The capital of Montenegro is Podgorica with population of 96,076.
“Dúthaigh Na Súpanna”: An Insight Into “Souper Territory” from the Folkloric Repertoire of Seán Mac Criomhthain
Authors: Mac An tSionnaigh Seaghan
Published: May 2020

West Kerry storyteller Seán Mac Criomhthain (1873-1955) was born almost a quarter-century after the Great Irish Famine. Nevertheless, his upbringing occurred in a context which included both overt and covert references to the kinds of sectarian divisions which initially had contributed to the famine, and which later were entrenched by it. Sectarian division in the Irish context expressed itself primarily via denominational attachment, and to a lesser extent, along linguistic lines. Such divisions were explored across the country through traditional lore and through song; and in the specific repertoire of Seán Mac Criomhthain, through the medium of a mellifluous ‘brand’ of Munster Irish for which the Corca Dhuibhne peninsula has since become renowned. This article attempts to describe attitudes to sectarian division in the evidence of Mac Criomhthain’s repertoire. With extensive reference to a composition translated for the first time to English, it will be argued that concerns of immediate social pragmatism are afforded much greater importance than those of denominational or linguistic attachments.
Does education degree affect the patient’s attitude towards the treatment after myocardial infarction?
Authors: Badarienė Jolita , Dženkevičiūtė Vilma , Rinkūnienė Egidija , Girkantaitė Živilė , Šilinskienė Dovilė , Skiauterytė Eglė , Kovaitė Milda , Mainelis Antanas , Ryliškytė Ligita , Čypienė Alma , Barysienė Jūratė
Published: May 2020

Objectives
. To assess the association between education degree and attitude towards the treatment after myocardial infarction (MI).

Design and Methods
. The participants of this cross-sectional study were 191 (140 men and 51 women) outpatients in a period of 3 months – 5 years after acute MI (mean age 59 ± 9.2 years) from Vilnius University Hospital Santaros Klinikos. All patients were asked to complete two questionnaires: “Quality of Life and Treatment after Myocardial Infarction” and “Cholesterol-lowering Drugs Consumption Peculiarities”. The data was analyzed using the SPSS software.

Results
. The education degree (a higher (post-secondary education provided by a college or university) vs. a lower (secondary or vocational education) education degree) had similar influence on the patients’ occasional concern (43.2%; n = 35 vs. 52.9%; n = 55, respectively; p = 0.226) and on the frequent concern (25.9%; n =21 vs. 26.9%; n = 28, respectively; p = 0.226) about MI. Patients with a higher education degree were more likely to identify themselves as the main subjects in MI treatment in comparison with patients that had a lower education degree (30.5%; n = 25 vs. 15.2%; n = 16, respectively, p = 0.033). More educated patients found it easier to follow up the doctor’s treatment plan than less educated patients (23.2%; n = 19 vs. 9.5%; n = 10, respectively; p = 0.035).

Conclusions
. More educated patients are more likely to follow up the doctor’s treatment plan and see it easier than less educated patients. Thus, more attention should be paid to less educated patients in order to increase their own impact on their post-MI treatment.