Moroccan residents’ perceptions of the hospital learning environment measured with the French version of the Postgraduate Hospital Educational Environment Measure

Hajar Berrani,Redouane Abouqal,Amal Thimou Izgua 한국보건의료인국가시험원 2020 보건의료교육평가 Vol.17 No.-

Purpose: This study aimed to assess the educational environment of residents in Morocco and to compare residents’ perceptions depending on their specialty. Methods: We applied the French version of the Postgraduate Hospital Educational Environment Measure (PHEEM) to measure theeducational environment at 6 hospitals in Rabat from January to June 2017. The internal reliability of the questionnaire was assessedusing Cronbach’s α coefficient. Principal component analysis was conducted to assess the construct validity of the 3 subscales of thePHEEM questionnaire. Analysis of variance was performed to compare the mean scores of the overall PHEEM, its subscales, and eachitem among the 6 specialties. Results: Responses from 255 residents were included. The 40-item PHEEM questionnaire showed a high level of reliability, with aCronbach’s α of 0.91. Principal component analysis of all 40 items suggested that 3 factors explained 48% of the variance, with better results for the teaching subscale. Moroccan residents perceived their educational environment as more positive than negative. There weresignificant differences in the overall and subscale scores among the 6 specialties. Conclusion: The French version of the PHEEM was confirmed to be a valid and reliable instrument in Morocco. Moroccan residentsperceived their educational environment as more positive than negative, but room for improvement remained, with challenges including the poor infrastructure, the suboptimal quality of supervision, and inadequate teaching and work regulations.

COMINIMAXNESS OF LOCAL COHOMOLOGY MODULES WITH RESPECT TO IDEALS OF DIMENSION ONE

( Hajar Roshan-shekalgourabi ) 호남수학회 2018 호남수학학술지 Vol.40 No.2

Let R be a commutative Noetherian ring, a be an ideal of R and M be an R-module. It is shown that if Extⁱ _R(R=a;M) is minimax for all i ≤ dimM, then the R-module Extⁱ _R(N;M) is minimax for all i ≥ 0 and for any finitely generated R-module N with Supp_R(N) ⊆ V (a) and dimN ≤ 1. As a consequence of this result we obtain that for any a-torsion R-module M that Extⁱ _R(R=a;M) is minimax for all i ≤ dimM, all Bass numbers and all Betti numbers of M are finite. This generalizes [8, Corollary 2.7]. Also, some equivalent conditions for the cominimaxness of local cohomology modules with respect to ideals of dimension at most one are given.

Evaluation of a Malaysian soy sauce koji strain Aspergillus oryzae NSK for γ-aminobutyric acid (GABA) production using different native sugars

Hajar-Azhari, Siti,Wan-Mohtar, Wan Abd Al Qadr Imad,Kadir, Safuan Ab,Rahim, Muhamad Hafiz Abd,Saari, Nazamid 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.2

In this study, a selected c-aminobutyric acid (GABA)-rich Malaysian strain Aspergillus oryzae NSK was collected from soy sauce koji. The strain was used to explore the effect of using renewable native sugar syrup, sugarcane, nipa, and molasses as fermentable substrates for developing a novel functional GABA soy sauce. We evaluated the strain using the chosen native sugars for 7 days using shake flask fermentation at $30^{\circ}C$. The results showed optimum GABA concentration was achieved using cane molasses as the fermentable substrate (354.08 mg/L), followed by sugarcane syrup (320.7 mg/L) and nipa syrup (232.07 mg/L). Cane molasses was subsequently utilized as a substrate to determine the most suitable concentration for A. oryzae NSK to enhance GABA production and was determined as 50% g/L of glucose standard cane molasses. Our findings indicate that cane molasses can be used as a GABA-rich ingredient to develop a new starter culture for A. oryzae NSK soy sauce production.

Multicracks identification in beams based on moving harmonic excitation

Hajar Chouiyakh,Lahcen Azrar,Khaled Alnefaie,Omar Akourri 국제구조공학회 2016 Structural Engineering and Mechanics, An Int'l Jou Vol.58 No.6

A method of damage detection based on the moving harmonic excitation and continuous wavelet transforms is presented. The applied excitation is used as a moving actuator and its frequency and speed parameters can be adjusted for an amplified response. The continuous wavelet transforms, CWT, is used for cracks detection based on the resulting amplified signal. It is demonstrated that this identification procedure is largely better than the classical ones based on eigenfrequencies or on the eigenmodes wavelet transformed. For vibration responses, free and forced vibration analyses of multi-cracked beams are investigated based on both analytical and numerical methodological approaches. Cracks are modeled through rotational springs whose compliances are evaluated using linear elastic fracture mechanics. Based on the obtained forced responses, multi-cracks positions are accurately identified and the CWT identification can be highly improved by adjusting the frequency and the speed excitation parameters.

A bibliometric mapping of shadow education research: achievements, limitations, and the future

Hajar, Anas,Karakus, Mehmet 서울대학교 교육연구소 2022 Asia Pacific Education Review Vol.23 No.2

This study aims to map the literature on shadow education using metadata extracted from 488 publications indexed in the Web of Science database. It is termed as shadow education because much of its content mimics what is learned in schools. The study uses bibliometric procedures to describe and visually represent available literature on shadow education in terms of main sources, key authors, institutions, and countries leading the production and dissemination of research on shadow education. Further, the study elaborates on h-classics publications to obtain an in-depth understanding of the most influential scientific outputs in this domain. Key findings of the study are that research on shadow education (a) has experienced steady growth over the last decade; (b) is disseminated through a wide range of outlets, mainly in the disciplines of sociology of education, economics of education, educational psychology, and language education; (c) is published mainly by scholars working in East Asia and the United States; (d) has focused on tangible (quantifiable) benefits related to improved examination results; and (e) reveals how this form of instruction primarily benefits students hailing from high socioeconomic backgrounds, thereby contributing to greater educational inequality. This study also suggests pedagogical implications and areas for ongoing research.

From glycerol as the by-product of biodiesel production to value-added monoacetin by continuous and selective esterification in acetic acid

Hajar Rastegari,Hassan S. Ghaziaskar 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1

A continuous and selective method for monoacetin synthesis was developed. Effects of the processparameters including reaction temperatures (100–140 8C), acetic acid to glycerol mol ratios (1–3), feedflow rates (0.2–0.6 mL min 1), and pressures (1–160 bar) on the glycerol conversion and themonoacetinselectivity were studied. At the optimum conditions of 100 8C, acetic acid to glycerol mol ratio of 1, feedflow rate of 0.6 mL min 1, and 1 bar, the glycerol conversion and monoacetin selectivity was,respectively, 53% and 93%. The effect of water amount in the feed (3–15%)was also studied at theoptimum conditions.

Wisteria Vein Mosaic Virus Detected for the First Time in Iran from an Unknown Host by Analysis of Aphid Vectors

Hajar Valouzi,Seyedeh-Shahrzad Hashemi,Stephen J,Wylie,Ali Ahadiyat,Alireza Golnaraghi 한국식물병리학회 2020 Plant Pathology Journal Vol.36 No.1

The development of reverse transcription–polymerase chain reaction using degenerate primers against conserved regions of most potyviral genomes enabled sampling of the potyvirome. However, these assays usually involve sampling potential host plants, but identifying infected plants when they are asymptomatic is challenging, and many plants, especially wild ones, contain inhibitors to DNA amplification. We used an alternative approach which utilized aphid vectors and indicator plants to identify potyviruses capable of infecting common bean (Phaseolus vulgaris). Aphids were collected from a range of asymptomatic leguminous weeds and trees in Iran, and transferred to bean seedlings under controlled conditions. Bean plants were tested serologically for potyvirus infections four-weeks post-inoculation. The serological assay and symptomatology together indicated the presence of one potyvirus, and symptomology alone implied the presence of an unidentified virus. The partial genome of the potyvirus, encompassing the complete coat protein gene, was amplified using generic potyvirus primers. Sequence analysis of the amplicon confirmed the presence of an isolate of Wisteria vein mosaic virus (WVMV), a virus species not previously identified from Western Asia. Phylogenetic analyses of available WVMV sequences categorized them into five groups: East Asian-1 to 3, North American and World. The Iranian isolate clustered with those in the World group. Multiple sequence alignment indicated the presence of some genogroup-specific amino acid substitutions among the isolates studied. Chinese isolates were sister groups of other isolates and showed higher nucleotide distances as compared with the others, suggesting a possible Eastern-Asian origin of WVMV, the main region where Wisteria might have originated.

Diagnosing Parkinson's Disease Using Movement Signal Mapping by Neural Network and Classifier Modulation

Hajar Nikandish,Esmaeil Kheirkhah 한국전자통신연구원 2017 ETRI Journal Vol.39 No.6

Parkinson's disease is a growing and chronic movement disorder, and its diagnosis is difficult especially at the initial stages. In this paper, movement characteristics extracted by a computer using multilayer back propagation neural network mapping are converted to the symptoms of this disease. Then, modulation of three classifiers of C4.5, k-nearest neighbors, and support vector machine with majority voting are applied to support experts in diagnosing the disease. The purpose of this study is to choose appropriate characteristics and increase the accuracy of the diagnosis. Experiments were performed to demonstrate the improvement of Parkinson's disease diagnosis using this method.

COMMUTATIVITY WITH ALGEBRAIC IDENTITIES INVOLVING PRIME IDEALS

Mir, Hajar El,Mamouni, Abdellah,Oukhtite, Lahcen Korean Mathematical Society 2020 대한수학회논문집 Vol.35 No.3

The purpose of this paper is to study the structure of quotient rings R/P where R is an arbitrary ring and P is a prime ideal of R. Especially, we will establish a relationship between the structure of this class of rings and the behavior of derivations satisfying algebraic identities involving prime ideals. Furthermore, the characteristic of the quotient ring R/P has been determined in some situations.

Apoptotic Effects of the B Subunit of Bacterial Cytolethal Distending Toxin on the A549 Lung Cancer Cell Line

Yaghoobi, Hajar,Bandehpour, Mojgan,Kazemi, Bahram Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.no.sup3

Cytolethal distending toxin (CDT) is a secreted tripartite genotoxin produced by many pathogenic gram-negative bacteria. It is composed of three subunits, CdtA, CdtB and CdtC, and CdtB-associated deoxyribonuclease (DNase) activity is essential for the CDT toxicity. In the present study, to design a novel potentially antitumor drug against lung cancer, the possible mechanisms of cdtB anticancer properties were explored in the A549 human lung adenocarcinoma cell line. A recombinant plasmid pcDNA3.1/cdtB was constructed expressing CdtB of human periodontal bacterium Aggregatibacter actinomycetemcomitans and investigated for toxic properties in A549 cells and possible mechanisms. It was observed that plasmid pcDNA3.1/cdtB caused loss of cell viability, morphologic changes and induction of apoptosis. Furthermore, measurement of caspase activity indicated involvement of an intrinsic pathway of cell apoptosis. Consequently, the recombinant plasmid pcDNA3.1/cdtB may have potential as a new class of therapeutic agent for gene therapy of lung cancer.