bluuebunny/crossref_metadata_2025 huggingface dataset:
The 2019 Outburst of the 2005 Classical Nova V1047 Cen: A Record Breaking Dwarf Nova Outburst or a New Phenomenon?
Authors: Aydi E. , Sokolovsky K. V. , Bright J. S. , Tremou E. , Nyamai M. M. , Evans A. , Strader J. , Chomiuk L. , Myers G. , Hambsch F-J. , Page K. L. , Buckley D. A. H. , Woodward C. E. , Walter F. M. , Mróz P. , Vallely P. J. , Geballe T. R. , Banerjee D. P. K. , Gehrz R. D. , Fender R. P. , Gromadzki M. , Kawash A. , Knigge C. , Mukai K. , Munari U. , Orio M. , Ribeiro V. A. R. M. , Sokoloski J. L. , Starrfield S. , Udalski A. , Woudt P. A.
Published: October 2022

We present a detailed study of the 2019 outburst of the cataclysmic variable V1047 Cen, which hosted a classical nova eruption in 2005. The peculiar outburst occurred 14 yr after the classical nova event and lasted for more than 400 days, reaching an amplitude of around 6 magnitudes in the optical. Early spectral follow-up revealed what could be a dwarf nova (accretion disk instability) outburst. However, the outburst duration, high-velocity (>2000 km s−1) features in the optical line profiles, luminous optical emission, and presence of prominent long-lasting radio emission together suggest a phenomenon more exotic and energetic than a dwarf nova outburst. The outburst amplitude, radiated energy, and spectral evolution are also not consistent with a classical nova eruption. There are similarities between V1047 Cen’s 2019 outburst and those of classical symbiotic stars, but pre-2005 images of the field of V1047 Cen indicate that the system likely hosts a dwarf companion, implying a typical cataclysmic variable system. Based on our multiwavelength observations, we suggest that the outburst may have started with a brightening of the disk due to enhanced mass transfer or disk instability, possibly leading to enhanced nuclear shell burning on the white dwarf, which was already experiencing some level of quasi-steady shell burning. This eventually led to the generation of a wind and/or bipolar, collimated outflows. The 2019 outburst of V1047 Cen appears to be unique, and nothing similar has been observed in a typical cataclysmic variable system before, hinting at a potentially new astrophysical phenomenon.
Education, Policy, and Advocacy in Predicting Use of Do-Not-Hospitalize Orders in Skilled Nursing Facilities
Authors: Ludwick Ruth , Baughman Kristin R.
Published: October 2022

Nurses and social workers are uniquely positioned to advocate for patients' wishes for do-not-hospitalize (DNH) directives. The purpose of the current study was to explore the impact of DNH education, policy, and advocacy on the use of DNH orders by nurses (RNs and licensed practical nurses [LPNs]) and social workers employed in skilled nursing facilities (SNFs). This multisite secondary analysis used cross-sectional survey data and analyzed responses of RNs, LPNs, and social workers (
N
= 354) from 29 urban SNFs. Mixed model regression was used to examine possible predictors of frequency of DNH orders within SNFs while adjusting for random effects. Results showed that having a DNH written policy, education on DNH orders, and having an advanced care planning advocate in the facility were strongly associated with a higher reported frequency of DNH discussions with residents and their families (
p
< 0.01 for each variable). [
Journal of Gerontological Nursing, 48
(11), 45–52.]
A Standardized Positive Physical Approach to Improve Oral Hygiene for Nursing Home Residents With Alzheimer's Disease and Related Dementias
Authors: Barry Barbara J. , McConnell Eleanor S. , Duea Stephanie R. , Blodgett Nikki Petsas
Published: October 2022

Residents with Alzheimer's disease and related dementias (ADRD) in nursing homes (NHs) rely on direct care workers (DCWs) to assist with activities of daily living, such as oral hygiene. The current quality improvement project was implemented to evaluate the effectiveness of teaching a standardized positive physical approach to oral hygiene completion for patients with ADRD residing in a NH. A pre-/postintervention evaluation incorporating a video presentation coupled with a hands-on simulation experience showed a statistically significant improvement in DCWs' overall Sense of Competency in Dementia score, as well as all subcategories of the Sense of Competence in Dementia Care Staff survey. In addition, residents' day shift oral hygiene care completion rates increased monthly pre- to postintervention. NHs should consider implementing training that includes hands-on experiences to equip DCWs with the knowledge and skill needed to improve oral hygiene among residents with ADRD. [
Journal of Gerontological Nursing, 48
(11), 15–20.]
Calculation and determination of radioactivity in the old district of Najaf by using the track detector CR-39 and geographical information systems (GIS) methods
Authors: Mansoor Adil A , Abduljabbar Hameed M
Published: October 2022

This research aims to study the radiation concentration distribution of the old District of Najaf (Iraq), where 15 samples were taken from featured sites in the District, which represents archaeological, religious, and heritage sites. Track detector CR-39 was used to calculate the concentration of three different soil weights for each sample site after being exposed for a month. Geographical information systems (GIS) were used to distribute the radioactive concentration on the sites of the samples, where two interpolation methods, namely the inverse distance weight method (IDW) and the triangle irregular network method (NIT), to study the distribution of the radioactivity concentration. The study showed that the western part of the district, which includes the old cemetery and the areas adjacent to the Najaf water depression, are characterized by a relatively high amount of radioactivity concentration compared to the eastern part, which represent the residential areas, and for all sample weights.
Microwave electromagnetic shielding effectiveness of ZnNb2O6-chopped strands composites for radar and wideband (6.5–18 GHz) applications
Authors: Şahin Ethem İ.
Published: October 2022

In this study, the traditional mixed oxide process was used to create ZnNb2O6-chopped strands composites. The single phase compound with the chemical formula ZnNb2O6 was generated after sintering at 1100°C for 4 h. For the structural investigation, various quantities of ZnNb2O6-chopped strands were generated. X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) were carried out for the structural analysis, which indicated that the second phase did not form in ZnNb2O6. Additionally, the ZnNb2O6-strands composites were manufactured by hot pressing using the compositions of ZnNb2O6-chopped strands in various proportions and epoxy. The ZnNb2O6-chopped strands compound formed in various weights, and epoxy resin were used to fabricate microwave shielding effectiveness composites. Utilizing a network analyzer, the microwave shielding effect of ZnNb2O6-chopped strands composites was investigated in a range of 6.5–18 GHz. At a thickness of 1.5 mm, a minimum of –51.32 dB shielding effectiveness value was achieved at 6.75 GHz. The ZnNb2O6-chopped strands compounds were produced as composite and their features were characterized for shielding effectivacy. The content of components in the samples may be managed for the larger and needed frequency bands to change the microwave shielding performance.
Integrated Library System as a Panacea to Sustainable Library Services Delivery in an Era of Pandemic
Authors: Onwubiko Emmanuel Chidiadi
Published: October 2022

The COVID-19 pandemic has meant that most organizations have adopted new ways of working with a view to satisfying their teeming customers with many employees now working remotely and interacting virtually with customers and coworkers. This has indeed redefined working trends since 2020, and librarians and libraries are no exceptions. This chapter therefore is an overview of the concept ‘pandemic', the impact on library services, as well as the place of integrated library system (ILS) as a panacea to sustainable library services delivery in an era of pandemic and recommendations.
Modern Security Systems in Libraries
Authors: Orji Sotonye , Alex-Nmecha Juliet Chinedu
Published: October 2022

One of the most significant difficulties facing libraries and librarians is security. Theft, mutilation, as well as other maltreatment of information resources have posed a significant challenge to the library profession around the world. This study highlights the many physical, environmental, and digital data security systems that are used for library security purposes, as well as the various security measures used in modern libraries. The study looked at some electronic security systems, such as CCTV, RFID, 3M security systems, smart cards, biometrics, access control systems, electromagnetic systems, etc. that are deployed in libraries. The challenges facing library security systems were highlighted, and the study recommends that libraries should give priority to security in their budgets, purchase modern security devices, design and implement effective and efficient security policies, as well as sensitize users and personnel on security issues.
Towards Environmental Sustainability
Authors: Igbinovia Magnus Osahon , Emmanuel Vivien Oluchi , Ambrose Smart Eromosele
Published: October 2022

The chapter theoretically examines the improvement of waste management in academic libraries as a stride towards ensuring environmental sustainability in line with the United Nations' agenda for sustainable development. The chapter in its introductory part established the place of waste management within the development framework. It exposes the concept and practices of waste management in libraries with particular reference to reusing, recycling, pulverization, repairing, and effective disposal. Thereafter, global best practices in waste management applicable to libraries were examined. The chapter also investigated the strategies and challenges to the implementation of waste management in libraries. Conclusion and recommendations were made accordingly.
Tinkering and Makerspaces for Sustainable Library Practices
Authors: Edobor Priscilla Eghonghon
Published: October 2022

Libraries all over the world have been tasked with the responsibility of not just providing knowledge but making users producers of knowledge. Tinkering and makerspaces provide users with serene and adequate environments for learning, innovation, tinkering ability, development, collaboration, knowledge creation, and sharing. These spaces are in two categories, which are the high-tech and the low-tech makerspaces. Both technologies offer adequate opportunities for innovation and productivity. This chapter examined tinkering and makerspaces for sustainable library practice, uses, makerspaces set up requirement in libraries, steps for development and benefit of makerspaces. The major benefit of creating makerspaces in libraries is that it fosters the development of users' interpersonal communication, teamwork, leadership, and mentoring skills. The challenges facing the use of tinkering and makerspaces were also discussed and recommendations proffered. Libraries need to embrace and take advantage of this trend which will bring about positive development in sustainable library practices.
Mobile Cloud Computing and Sustainable Development
Authors: Peñalvo Francisco José García , Sharma Akash , Chhabra Anureet , Singh Sunil K. , Kumar Sudhakar , Arya Varsha , Gaurav Akshat
Published: October 2022

The number of smartphone users has increased from 3.6 billion in 2016 to 6.25 billion by 2021, which shows that mobile phone usage has increased dramatically over the past few years. This is due to the development of mobile computing applications like commerce, healthcare, e-learning, etc. The use of mobile devices has resulted in an exponential rise in the amount of data generated and as a result the amount of energy consumed has increased. This is where cloud computing plays a major role. Cloud computing has transformed traditional mobile computing. The new mobile cloud not only provides on-demand services but also data storage and increased energy efficiency. Through mobile computing based on cloud computing, mobile device functions can be virtualized, reducing power consumption. In this paper, the authors survey application and potential of mobile cloud computing and present the energy-efficient ways. Also, the paper discusses development opportunities of mobile cloud computing. The research also mentions some of the major challenges in current mobile computing technology.
Tax Education to Enhance Tax Compliance for Socio-Economic Development
Authors: Baporikar Neeta
Published: October 2022

Tax collection by governments globally is to generate revenue so that they can deliver basic services to citizens like health, education, roads, infrastructural development, and meet expenditure. Hence, revenue from taxation is important for all countries and more so for developing ones. However, to ensure that this collection is optimum, the citizens must be tax compliant. Yet, many countries and more so emerging ones are poor at tax collection due to the low tax compliance. Among other mechanisms to increase tax compliance like a penalty, confiscation of property that is more detrimental in nature, the progressive mechanism to increase tax compliance is taxpayer education. Hence, adopting a descriptive qualitative approach, this study investigates individual citizens' taxpayer education approach to enhance tax compliance for socio-economic development. Findings reveal that educating citizens on taxation not only aids in tax compliance but has a multiplier effect on fiscal knowledge and nation development.
Determinants of Intention to Use Ride-Hailing Services in Vietnam
Authors: Vo Thao Thi Thanh , Van Trong Hung
Published: October 2022

The rise of ride-hailing services—a unique transportation technology that has recently been progressively popular worldwide—has revolutionized the transportation business. They currently make up the majority of platform economy activities and are crucial to the functioning of our cities. Because it is crucial to the long-term financial performance and widespread service promotion of ride-hailing service firms, it is vital to comprehend the intention to use ride-hailing services. This study aims to investigate the factors influencing people's intentions to use ride-hailing services in Vietnam using the value-based adoption model (VAM). It will also look at the impact of the network effect and the trust transfer process in ride-hailing services to determine how these factors interact.
A Optimized Taxonomy on Spot Sale Services Using Mathematical Methodology
Authors: Tiwari Ashish , Garg Ritu
Published: October 2022

In reality, the most appropriate cloud standards are significant ideas for application administrations. OSCCS technique calculation gives a spot-like market in virtual space to the end clients. The OSCCS gives an on-spot showcasing framework in the virtual universe of processing. As fluffy hypothesis is giving the specific outcomes and close to correct outcomes that is the reason that authors have taken the idea of fluffy unpleasant set hypothesis in their OSCCS approach. This sort of approach depends on the determination of the best ideal cost and season of asset allotment to an end client by the suppliers in virtual advertising. The allotments of assets depend on powerful on-request demand upkeep so the end-client gets the cloud administration on a business premise like in continuous shopping advertising on events. By the OSCCS deals approach framework, an end client can get the assistance at the ideal expense. The OSCCS calculation is mimicked in cloud test systems.
Knowledge and confidence on prescribing antibiotics among medical graduates from a Sri Lankan university
Authors: Dalugama C. , Gamage K.
Published: October 2022

Inappropriate antimicrobial prescription is the main contributory factor to rapidly growing antibiotic resistance. This cross-sectional study was done to assess the knowledge, attitudes, and practices of antibiotic use among medical graduates at the University of Peradeniya using an online questionnaire.
The medical graduates rated their education in cardiology to be ‘sufficient’ or ‘more than sufficient’ compared to infectious diseases and antimicrobials (p<0.05). Confidence in diagnostics was higher than therapeutics in infectious diseases. Most were aware of local antimicrobial guidelines but nearly half (46.1%) believed these were used less than 50% in the clinical setting. The average knowledge score was 57.5% and participants scored well (>75%) in deciding when not to use antibiotics and scored less (<50%) in therapeutics of less common infections.
Poor knowledge and confidence amongst medical graduates were observed in antimicrobial prescribing. Antibiotic stewardship should be emphasized in medical curricula to improve the prescribing practice among doctors.
'n Verdediging van die Terugverdienperiode-metode as 'n Beoordelingsmaatstaf by Kapitaalinvesteringsprojekte
Authors: Lambrechts I. J.
Published: October 2022

The evaluation of capital investment projects is one of the main pillars of company profitability. The financial evaluation of projects by the recoupment-period method is universally accepted, but is however often subject to severe criticism.This article gives an intensive analysis of the recoupment-perlod method, and indicates the correct methods which should be applied to achieve optimum results.
n Raamwerk vir en Oorwegings by die Opstel van 'n Aanvangstrategie vir n Kleinnyweraar
Authors: Nel C. J.
Published: October 2022

When a small industrialist starts a firm of his own, he could quite possibly find himself in a situation where he knows very little about the economic environment. He should be able to formulate a strategy for this starting phase. The author discusses a framework whereby such a strategy can be formulated.
Realiteite van die Sakewêreld Uitdagings en Slaggate vir die Jong Ondernemer
Authors: Bester Theunis
Published: October 2022

No abstract available.
Application of Deep Neural Network Algorithm in Speech Enhancement of Online English Learning Platform
Authors: Peng Haiyan , Zhang Min
Published: October 2022

INTRODUCTION: In the online English learning platform, noise interference makes people unable to hear the content of English teaching clearly, which leads to a great reduction in the efficiency of English learning. In order to improve the voice quality of online English learning platform, the speech enhancement method of the online English learning platform based on deep neural network is studied.OBJECTIVES: This paper proposes a deep neural network-based speech enhancement method for online English learning platform in order to obtain more desirable results in the application of speech quality optimization.METHODS: The optimized VMD (Variable Modal Decomposition) algorithm is combined with the Moth-flame optimization algorithm to find the optimal solution to obtain the optimal value of the decomposition mode number and the penalty factor of the variational modal decomposition algorithm, and then the optimized variational modal decomposition algorithm is used to filter the noise information in the speech signal; Through the network speech enhancement method based on deep neural network learning, the denoised speech signal is taken as the enhancement target to achieve speech enhancement.RESULTS: The research results show that the method not only has significant denoising ability for speech signal, but also after this method is used, PESQ value of speech quality perception evaluation of speech signal is greater than 4.0dB, the spectral features are prominent, and the speech quality is improved.CONCLUSION: Through experiments from three perspectives: speech signal denoising, speech quality enhancement and speech spectrum information, the usability of the method in this paper is confirmed.
Abel universal functions
Authors: Charpentier Stéphane , Mouze Augustin
Published: October 2022

Given a sequence
$\varrho =(r_n)_n\in [0,1)$
tending to
$1$
, we consider the set
${\mathcal {U}}_A({\mathbb {D}},\varrho )$
of Abel universal functions consisting of holomorphic functions f in the open unit disk
$\mathbb {D}$
such that for any compact set K included in the unit circle
${\mathbb {T}}$
, different from
${\mathbb {T}}$
, the set
$\{z\mapsto f(r_n \cdot )\vert _K:n\in \mathbb {N}\}$
is dense in the space
${\mathcal {C}}(K)$
of continuous functions on K. It is known that the set
${\mathcal {U}}_A({\mathbb {D}},\varrho )$
is residual in
$H(\mathbb {D})$
. We prove that it does not coincide with any other classical sets of universal holomorphic functions. In particular, it is not even comparable in terms of inclusion to the set of holomorphic functions whose Taylor polynomials at
$0$
are dense in
${\mathcal {C}}(K)$
for any compact set
$K\subset {\mathbb {T}}$
different from
${\mathbb {T}}$
. Moreover, we prove that the class of Abel universal functions is not invariant under the action of the differentiation operator. Finally, an Abel universal function can be viewed as a universal vector of the sequence of dilation operators
$T_n:f\mapsto f(r_n \cdot )$
acting on
$H(\mathbb {D})$
. Thus, we study the dynamical properties of
$(T_n)_n$
such as the multiuniversality and the (common) frequent universality. All the proofs are constructive.
Implementation and characterization of flash‐based hardware security primitives for cryptographic key generation
Authors: Oh Mi‐Kyung , Lee Sangjae , Kang Yousung , Choi Dooho
Published: October 2022

Hardware security primitives, also known as physical unclonable functions (PUFs), perform innovative roles to extract the randomness unique to specific hardware. This paper proposes a novel hardware security primitive using a commercial off‐the‐shelf flash memory chip that is an intrinsic part of most commercial Internet of Things (IoT) devices. First, we define a hardware security source model to describe a hardware‐based fixed random bit generator for use in security applications, such as cryptographic key generation. Then, we propose a hardware security primitive with flash memory by exploiting the variability of tunneling electrons in the floating gate. In accordance with the requirements for robustness against the environment, timing variations, and random errors, we developed an adaptive extraction algorithm for the flash PUF. Experimental results show that the proposed flash PUF successfully generates a fixed random response, where the uniqueness is 49.1%, steadiness is 3.8%, uniformity is 50.2%, and min‐entropy per bit is 0.87. Thus, our approach can be applied to security applications with reliability and satisfy high‐entropy requirements, such as cryptographic key generation for IoT devices.
Low complexity ordered successive interference cancelation detection algorithm for uplink MIMO SC‐FDMA system
Authors: Praveena Nalamani G. , Selvaraj Kandasamy , Judson David , Anandaraj Mahalingam
Published: October 2022

In mobile communication, the most exploratory technology of fifth generation is massive multiple input multiple output (MIMO). The minimum mean square error and zero forcing based linear detectors are used in multiuser detection for MIMO single‐carrier frequency division multiple access (SC‐FDMA). When the received signal is detected and regularization sequence is joined in the equalization of spectral null amplification, these schemes experience an error performance and the signal detection assesses an inversion of a matrix computation that grows into complexity. Ordered successive interference cancelation (OSIC) detection is considered for MIMO SC‐FDMA, which uses a posteriori information to eradicate these problems in a realistic environment. To cancel the interference, sorting is preferred based on signal‐to‐noise ratio and log‐likelihood ratio. The distinctiveness of the methodology is to predict the symbol with the lowest error probability. The proposed work is compared with the existing methods, and simulation results prove that the defined algorithm outperforms conventional detection methods and accomplishes better performance with lower complication.
Agreement between two methods for assessment of maximal inspiratory pressure in patients weaning from mechanical ventilation
Authors: Ribeiro Emanuelle Olympia Silva , Gosselink Rik , Moura Lizandra Eveline da Silva , Correia Raissa Farias , Leite Wagner Souza , Araújo Maria das Graças Rodrigues de , Andrade Armele Dornelas de , Brandão Daniella Cunha , Campos Shirley Lima
Published: October 2022

Background: Respiratory muscle strength in patients with an artificial airway is commonly assessed as the maximal inspiratory pressure (MIP) and is measured using analogue or digital manometers. Recently, new electronic loading devices have been proposed to measure respiratory muscle strength. This study evaluates the agreement between the MIPs measured by a digital manometer and those according to an electronic loading device in patients being weaned from mechanical ventilation.Methods: In this prospective study, the standard MIP was obtained using a protocol adapted from Marini, in which repetitive inspiratory efforts were performed against an occluded airway with a one-way valve and were recorded with a digital manometer for 40 seconds (MIPDM). The MIP measured using the electronic loading device (MIPELD) was obtained from repetitively tapered flow resistive inspirations sustained for at least 2 seconds during a 40-second test. The agreement between the results was verified by a Bland-Altman analysis.Results: A total of 39 subjects (17 men, 55.4±17.7 years) was enrolled. Although a strong correlation between MIPDM and MIPELD (R=0.73, P<0.001) was observed, the Bland-Altman analysis showed a high bias of –47.4 (standard deviation, 22.3 cm H2O; 95% confidence interval, –54.7 to –40.2 cm H2O).Conclusions: The protocol of repetitively tapering flow resistive inspirations to measure the MIP with the electronic loading device is not in agreement with the standard protocol using one-way valve inspiratory occlusion when applied in poorly cooperative patients being weaned from mechanical ventilation.
COP27 Climate Change conference: Urgent action needed for Africa and the world
Authors: Atwole Lukoye , Erhabor Gregory E. , Gbakima Aiah A. , Haileamlak Abraham , Ntumba Jean-Marie Kayembe , Kigera James , Laybourn-Langton Laurie , Mash Bob , Muhia Joy , Mulaudzi Fhumulani Mavis , Ofori-Adjei David , Okonofua Friday , Rashidian Arash , El-Adawy Maha , Sidibé Siaka , Snouber Abdelmadjid , Tumwine James , Yassien Mohammad Sahar , Yonga Paul , Zakhama Lilia , Zielinski Chris
Published: October 2022

No abstract
Biological Resolution of Virulence Genes of Salmonella Species from different Microbiomes
Authors: Popoola O.D. , Tajudeen A.O. , Adesetan T.O. , Banjo O.A. , Salisu T.F. , Coker M.O. , Balogun-Abiola H.T. , Adekola H.A. , Oyeyipo F.M. , Thomas B.T.
Published: October 2022

The pathogenic promiscuity of virulence associated macromolecules in Salmonella infection is a key driver to their wide epidemiology and curtailing  such distribution is contingent upon proper clarification of these virulence genes. This study was therefore aimed at determining the virulence  genes of Salmonella species from different microbiomes. To achieve this, a total of three hundred (300) biological specimens were aseptically  collected and processed for Salmonella presence using the BAM USFDA technique prior to their genotypic characterization while virulence gene  detection was carried out in a primer specific polymerase chain reaction. Results obtained depict the distribution of the following Salmonella species  viz; Salmonella gallinarum 19(26.39%), Salmonella heidelberg 19(26.39%), Salmonella enteritidis 18(25%) and Salmonella typhimurium  16(22.22%) while the occurrence of the virulence genes (InvA, SopE, AgfA and SpvC) were Salmonella enteritidis ( 7(38.8), 6(33.3), 9(50), 3(16.7),  Salmonella typhimurium ( 5(26.3), 3(15.8), 2(10.5), 7(36.8)), Salmonella heidelberg (0(0), 8(50), 4(25), 4(25), and Salmonella gallinarum (12(63.2),  6(31.6), 2(10.5), 7(36.8)) respectively. It was however found that the different microbiomes analyzed were ubiquitously rich in virulence genes  associated Salmonella species.

 

La promiscuité pathogène des macromolécules associées à la virulence dans l’infection à Salmonella est un facteur clé de leur large épidémiologie  et la réduction de cette distribution dépend de la clarification appropriée de ces gènes de virulence. Cette étude visait donc à déterminer les gènes  de virulence des espèces de Salmonella de différents microbiomes. Pour ce faire, un total de trois cents (300) échantillons biologiques ont été  collectés et traités de manière aseptique pour la présence de Salmonella à l’aide de la technique BAM USFDA avant leur caractérisation génotypique  tandis que la détection du gène de virulence a été effectuée dans une réaction en chaîne par polymérase spécifique à l’amorce. Les résultats  obtenus décrivent la distribution des espèces de Salmonella suivantes, à savoir ; Salmonella gallinarum 19(26,39%), Salmonella heidelberg  19(26,39%), Salmonella enteritidis 18(25%) et Salmonella typhimurium 16(22,22%) alors que la présence des gènes de virulence (InvA, SopE, AgfA et  SpvC) était Salmonella enteritidis ( 7(38,8), 6(33,3), 9(50), 3(16,7), Salmonella typhimurium ( 5(26,3), 3(15,8), 2(10,5), 7(36,8)), Salmonella heidelberg (0(  0), 8(50), 4(25), 4(25) et Salmonella gallinarum (12(63.2), 6(31.6), 2(10.5), 7(36.8)) respectivement. différents microbiomes analysés étaient  ubiquitairement riches en gènes de virulence associés aux espèces de Salmonella
Géochimie, minéralogie et sélection altérologique des argiles alluviales de la vallée du Nyong à Akonolinga (Cameroun) en vue de leur utilisation dans la production des briques cuites
Authors: Assomo Philippe Samba , Lawou Sylvain Kouayep , Bouba Lucas , Beyala Veronique Kamgang Kabeyene
Published: October 2022

Trois puits ont été ouverts dans la vallée du Nyong à travers lesquels les échantillons d’argiles alluviales ont été récoltés. Ces échantillons ont été  soumis à l’analyse spectrométrique de rayons X et la méthode « altérologique normative » a été mise en oeuvre en vue de leur sélection dans la  production des briques cuites. Les résultats obtenus montrent que la silice (SiO2) est l’élément le plus abondant suivie par l’alumine (Al2O3). Les  autres éléments majeurs (TiO2, FeO3, K2O, MnO, NiO, P2O5, CaO, Cr2O3) ont des concentrations insignifiantes. Les paramètres altérologiques  révèlent que l’Indice de Lixiviation Potentielle (ILP) est important contrairement au Dégré Virtuel d’Altération de la Roche (DVAR) qui est faible. Le  milieu est ouvert et faiblement induré car les valeurs de l’Indice de Confinement Potentiel (ICP) et de l’Indice d’Induration Potentielle (IIP) sont  faibles. L’application du protocole de selection normative aux matériaux de la vallée du Nyong, les a proscrits pour la fabrication des briques cuites. Cependant, en prenant soin de fabriquer les briques cuites avec l’argile saine (100 wt%) ou avec des faibles ajouts de sable (5, 10, 15 wt%), les  résultats obtenus sont bons.

In the Nyong valley, three wells were dug from which alluvial clay samples were collected. These samples were subjected to X-ray analysis and the  normative alterology” method was applied for their selection in the production of fired bricks. The results obtained show that silica (SiO2) is the  most abundant element followed by alumina (Al2O3). The other major elements (TiO2, FeO3, K2O, MnO, NiO, P2O5, CaO, Cr2O3) have insignificant  concentrations. The alterology parameters show that the Potential Leaching Index (PLI) is high in contrast to the Virtual Degree of Alteration of the  Rock (VDA) which is low. The environment is opened and weakly indurated as the Potential Containment Index (PCI) and Potential Induration Index  (PII) values are low. The application of the normative selection protocol to the Nyong Valley materials has prohibited them from being used for the  manufacture of fired bricks. However, if care is taken to make the fired bricks with 100% pure clay or with small amounts of sand (5%, 10%, 15%),  good results are obtained.
CITES must urgently take the steps to save Madagascar’s unique species of rosewood and ebony
Authors: Roberts Mark A. , Schuurman Derek , Lowry II Porter P. , Ratsifandrihamanana A. N. A. , Rafanomezantsoa S. , Waeber Patrick O. , Wilmé Lucienne
Published: October 2022

This contribution is an open letter to all CITES Management and Scientific Authorities, which is signed by all of the co-authors. As CITES convenes its 19th Conference of the Parties in November 2022, some of the largest seizures in history of illegally harvested CITES-listed species are poised to be handed back to the criminals who smuggled them out of Madagascar. Nearly 40,000 rosewood logs were illegally exported from the country in 2014, in clear violation of CITES and national embargos, as explicitly declared in Notices issued by the CITES Secretariat. The logs were seized by Singapore, Kenya, and Sri Lanka, but as a result of both passive and active interference from various Malagasy officials and aggressive use of these countries’ national court and political systems, orders have now been issued for the logs to be returned to the smugglers. Release of this wood would have catastrophic consequences for the future sustainable management of Madagascar’s remaining rosewood and ebony resources. We propose five essential steps that should be taken at the upcoming CITES CoP 19 in Panama to prevent this from happening.
Judean Piracy, Judea and Parthia, and the Roman Annexation of Judea: The Evidence of Pompeius Trogus
Authors: Atkinson Kenneth
Published: October 2022

Pompey the Great’s 63 BCE conquest of the Jewish kingdom known as the Hasmonean State has traditionally been viewed as an inevitable event since the Roman Republic had long desired to annex the Middle Eastern nations. The prevailing consensus is that the Romans captured the Hasmonean state, removed its high-priest kings from power, and made its territory part of the Republic merely through military force. However, Justin’s Epitome of the Philippic Histories of Pompeius Trogus is a neglected source of new information for understanding relations between the Romans and the Jews at this time. Trogus’s brief account of this period alludes to a more specific reason, or at least, circumstance for Pompey’s conquest of Judea. His work contains evidence that the Jews were involved in piracy, of the type the Republic had commissioned Pompey to eradicate. In addition to this activity that adversely affected Roman commercial interests in the Mediterranean, the Jews were also involved with the Seleucid Empire and the Nabatean Arabs, both of whom had dealings with the Parthians. Piracy, coupled with Rome’s antagonism towards the Parthians, negatively impacted the Republic’s attitude towards the Jews. Considering the evidence from Trogus, Roman fears of Jewish piracy and Jewish links to the Republic’s Parthian enemies were not unfounded.
Orientals in Late Antique Italy: Some Observations
Authors: Traina Giusto
Published: October 2022

Some evidence points at the presence of Orientals in late Roman Italy: traders (labelled “Syrians”), petty sellers (the pantapolae in Nov. Val. 5), but also students, professors such as Ammianus Marcellinus, or pilgrims. Although being Roman citizens, nonetheless they were considered foreign individuals, subject to special restrictions. The actual strangers made a different case, especially the Persians. The situation of foreign individuals was quite different. Chauvinistic attitudes are widely attested, and they worsened in critical periods, for example after Adrianople. This may explain the laws of early 397 and June 399, promulgated during Stilicho’s regency, which prohibited the wearing of trousers (bracae) and some fashionable boots called tzangae. Of course, some protégés of the imperial court had the right to enter Italy, as it was the case of the Sassanian prince Hormisdas, who accompanied Constantius II in his visit of Rome in 357.
A Behavioral Science Perspective on Consumers’ Engagement With Demand Response Programs
Authors: Sloot Daniel , Lehmann Nico , Ardone Armin , Fichtner Wolf
Published: October 2022

Residential electricity demand response programs can play a substantial role in facilitating a sustainable energy transition, but it is important to examine the consumer behaviors necessary to harness this potential. We outline three behavioral dimensions relevant for effective demand response, namely investment, participation, and actual response. We discuss the factors that underpin them as well as possible behavioral interventions to promote demand response behaviors.
Ortaokul Matematik Ders Kitaplarının Tahmin Becerisi Bakımından İncelenmesi
Authors: EV ÇİMEN Emre , BİLGİÇ Elif
Published: October 2022

Bu araştırmanın amacı ortaokul matematik ders kitaplarında yer verilen tahmin beceri türlerini belirlemek, öğrenme alanlarına ve ders kitabındaki bölümlere göre dağılımını incelemektir. Araştırmada, 2020-2021 eğitim öğretim yılı içerisinde devlet ortaokullarında derslerde kullanılan, özel yayınevleri basımlı ve Milli Eğitim Bakanlığı onaylı matematik ders kitaplarından her sınıf seviyesi için birer adet örnek kitap olmak üzere dört kitap incelenmiştir. Araştırmada nitel araştırma desenlerinden doküman incelemesi kullanılmıştır. Bulgularda ders kitaplarında tahmine yer verilen içeriklerin 5. ve 6.sınıf seviyelerinde, 7. ve 8. sınıf seviyelerine göre daha yoğun olduğu tespit edilmiştir. Her sınıf seviyesinde en çok kullanılan tahmin türü işlemsel tahmin iken yığın tahminine sınırlı sayıda içerikte yer verildiği görülmüştür. Sayılar ve işlemler öğrenme alanı tüm sınıf seviyelerinde tahmin becerisi içeren tek öğrenme alanı olarak belirlenmiştir. Ders kitaplarında tahmin ile ilgili içeriklerin genel olarak alıştırmalar ve çözümlü örnekler gibi bölümlerde yoğun olduğu görülür iken etkinlik bölümlerinde çok az içerik olduğu hatta 7. sınıf ders kitabında hiç yer verilmediği görülmüştür. Özel yayınevlerinin hazırladığı ders kitaplarının incelenmesi ile ulaşılan sonuçlara göre ders kitaplarında yer verilen tahmin ile ilgili içeriklerin yeterli sayıda olmadığı görülmüştür. Bu araştırmaya MEB yayınevlerinin hazırladığı ders kitapları da eklenerek araştırmanın kapsamı genişletilebilir, ortaokul seviyesinde yapılan çalışma ilkokul ve lise seviyelerinde de yapılabilir. Ders kitaplarının tahmin becerisi bakımından nasıl bir gelişim gösterdiğini görmek açısından geçmiş yıllardaki ders kitaplarının incelenmesi araştırmacılara önerilmektedir.
RATIONAL TYPE CONTRACTION MAPPING THEOREMS ON MULTIPLICATIVE G-METRIC SPACES
Authors: MEHMOOD MAZHAR , BILAL MUHAMMAD , SHOAIB ABDULLAH
Published: October 2022

In this article, we have extended the results of Y. U. Gaba by taking multiplicative G-metric space instead of G-metric space. In this way, we proved contraction mapping theorems on multiplicative, G-metric spaces using rational type contraction conditions for a single map. Later on, we extended our results in the settings of triplet maps. We have also given examples to support our results.
PORTABLE LITHIUM-ION BATTERY UPS WITH BMS FUNCTION FOR RASPBERRY PI AND OTHER IOT EMBEDDED SYSTEMS
Authors: MIRON-ALEXE VIOREL
Published: October 2022

The increasing number of IoT (Internet of Things) based embedded systems, used nowadays in every aspects of our lives, inherently generates new challenges that require specific technical attention regarding: the increasing power demand directly proportional with the rising of their computational power and wireless communication functions, a more complex and flexible UPS (Uninterruptible Power Supply) design with load sharing function, a correctly balanced BMS (Battery Management System) consistent with the battery technology used and the manufacturer technical specifications, a more stable DC to DC converter output, a smarter system fail-safe algorithm, all concentrated in a more compact form factor. Taking all that into consideration, this article addresses all the previously mentioned issues in order to design, evaluate and present a fully functional UPS prototype for most IoT embedded systems. Although the proposed UPS prototype design can also be successfully used on non-OS (Operating System) IoT embedded platforms, with minor adaptations, the focus experimentation in this article will be on the every student’s favorite, but power demanding, Raspberry Pi 4 Model B. Basically, being a complete and miniaturized OS computer, the popular Raspberry Pi 4 is a very adamant candidate for tight input DC power parameters, that work in direct correlation with the system’s stability and performance. The final goal of the proposed UPS prototype is to provide Raspberry Pi 4 with enough independent runtime, until it safely shuts down the OS, in case of an external power blackout, and start back on at an external power restore event, all in order to protect the file system stability, or the data acquisition and storage processes from corruption.
MHD CASSON FLUID STAGNATION POINT FLOW AND HEAT TRANSFER OVER AN EXPONENTIALLY STRETCHING SURFACE IN PRESENCE OF UNIFORM HEAT SOURCE AND SINK WITH SUCTION EFFECT
Authors: LAKSHMI B. , PRADEEP G.V. , MOHAN C.B.
Published: October 2022

The present study reveals the analysis of steady mixed convection MHD stagnation point flow of Casson fluid of non-Newtonian nature and Heat transfer over an exponentially stretching surface where the consequence of uniform heat source and sink are taken in to consideration. The presiding Non-linear Partial differential equations and the corresponding boundary conditions are formulated and thus transformed into pair of non-linear ordinary differential equations. The equations thus obtained are deciphered using Runge-Kutta fourth - order method with the help of MATLAB software. The results obtained for Skin friction coefficient and heat transfer rate for the case of Newtonian fluid are determined, which are in good harmony with the previously proclaimed results of other researchers.The impact of physical quantities such as Casson parameter, buoyancy parameter, Hartmann number, Prandtl number, heat source and sink, Suction parameter, on the fluid velocity and temperature are discussed through graphs for both assisting and opposing flow. The variation in Skin friction coefficient and Nusselt number are tabulated for various values of Hartmann number. Divergence in the velocity profile is observed for increase in Suction for two different values of Velocity ratio parameter. As Skin friction coefficient escalates with suction parameter indicating the exertion of drag force by the surface on the fluid flow. Also, the study reveals that the impact of Hartmann number is to minimize the boundary layer separation.
Paediatric Cardiology in Singapore – 1978 to 2008
Authors: Yip William CL
Published: October 2022

This article marks Congenital Heart Defect Awareness Week, 7 to 14 February 2009 (http://tchin.org/aware/ index.htm). The title, “Paediatric Cardiology in Singapore – 1978 to 2008” reflects the most exciting phase in the development of paediatric cardiology in Singapore. Congenital heart defect (CHD), with an incidence of 1 in 100 live births, is the most important and frequent congenital malformation, causing much morbidity and mortality in infants, children, and even in adults.1,2 This article highlights some advances in the science, and the changing patterns in the practice, of paediatric cardiology in Singapore.
Assessment of Medical Students’ Knowledge Retention in a Diagnostic Radiology Course: Lecture Attendees versus Absentees
Authors: Chan Wing Pong
Published: October 2022

Introduction: To compare class attendees versus absentees in their ability to retain knowledge during a diagnostic radiology course.

Materials and Methods: This study recruited 146 fourth- year medical students who attended a diagnostic radiology course from February 2004 to June 2004. Eight unit tests were conducted. Questions for each test covered content taught in the prior class. Another examination (which students were not aware of beforehand) was conducted in June, and the questions for this examination included content from all lectures in the course. The class attendance rates were measured separately 6 times during the course. Students who were present on the last of these dates were categorised as attendees (group A students) and those who were absent were categorised as absentees (group B).

Results: The average class attendance was 76.8% and the lowest attendance was 56.8%. For the unit tests, the average score of group A students (80.7 ± 7.3) was significantly higher than that of the group B students (76.2 ± 8.8) (P = 0.001). However, in the unanticipated examination, there was no significant difference in the scores between group A (68.1 ± 10.3; range, 36-92) and group B students (65.5 ± 13.5; range, 28-
88) (P = 0.19). Self-learning time was related to the unit test scores (P = 0.001) but not to the unanticipated examination scores (P = 0.27).

Conclusion: Students who frequently attend classes or study for longer can retain their knowledge over a short period of time, but there is no difference in knowledge retention between class attendees and absentees at the end of a 4-month course.

Key words: Absentees, Attendees, Knowledge retention, Radiology
Renal Transplantation in Singapore
Authors: A Vathsala , Chow Khuan Yew
Published: October 2022

Introduction: Renal transplantation is the best treatment for kidney failure. As the demand far exceeds the supply, various legislative measures have been put into place in Singapore to increase kidney transplant rates. This paper evaluates the impact of these measures and reports on the outcomes for kidney transplant recipients in Singapore. Materials and Methods: Patient demographics, recipient and donor characteristics, and co-morbidities occurring in incident transplant patients were extracted from Singapore Renal Registry (SRR) Reports from 1997 to 2006, tabulated and summarised. Graft and patient survivals data, which were calculated by Kaplan-Meier analysis until return to dialysis/pre-emptive renal re-transplant or patient death respectively, were extracted from SRR Reports. Published data from the United States Renal Data System (USRDS) and Organ Procurement and Transplantation Network (OPTN) were used for comparisons with data from the SRR. Results: The introduction of the Human Organ Transplant Act increased the rate of deceased donor (DD) kidney transplants from 4.7 per year from 1970 to 1988, to 41.4 per year from 1988 to 2004. In 2006, the overall DD and living donor (LD) rate for kidney transplants performed locally for Singaporeans and permanent residents of Singapore was 22.6 per million population (pmp); taking into account overseas kidney transplants, the kidney transplant rate was 33.0 pmp. One and 5-year graft survivals for local LD and DD transplanted between 1999 and 2006, as reported by the SRR, were 98.1% and 95.3% versus 88.9% and 81.3%, respectively (P <0.001). Patient survivals at 1 and 5 years were likewise significantly better for LD versus DD (99.4% and 96.6% vs. 96% and 89.1%, respectively; P = 0.005). Conclusions: The local kidney transplant rates were lower than those reported by the USRDS for the USA, Spain, Norway and Australia but higher than other Asian countries. While 1-year outcomes for transplants reported to the SRR were similar to that reported by the OPTN, 5-year survivals were significantly higher, possibly due to the selection of patients with fewer co- morbidities for kidney transplantation in Singapore. These results suggest that while outcomes are excellent, there is much more to be done to increase kidney transplantation rates in Singapore so as to meet the needs of end-stage renal failure patients in the country. Key words: Presumed consent, Singapore Renal Registry, Living donor, Kidney transplant, Deceased donor kidney transplant, Graft survival