scholarly journals Study of Factors Affecting Students’ Performance in three Science Classes: General Biology, Botany, and Microbiology at Fayetteville State University

2017 ◽  
Vol 1 (1) ◽  
pp. 13-18
Author(s):  
Stella K. Kantartzi ◽  
Sherrice Allen ◽  
Khalid Lodhi ◽  
Robert L. Grier IV ◽  
My Abdelmajid Kassem
Keyword(s):  
Significant Role ◽  
Significant Negative Correlation ◽  
State University ◽  
General Biology ◽  
Factors Affecting ◽  
Class Time ◽  
Almost All ◽  
Performance Results ◽  
Science Classes ◽  
To Receive

Several studies have reported the effects of class time on overall students’ performances, but there are just few on the influence of factors as absences, gender, class section, class difficulty or semester. The objectives of this study were to an- alyze the effects of the above mentioned factors (absences, class time, gender, class difficulty and semester) on college students’ performance in three science classes: Principles of Biology (BIOL 150), General Botany (BOTN 210), and Micro- biology & Immunology (BIOL 330) over a period of 3 years. Analysis of variance (ANOVA) for absences showed signifi- cant differences for the number of those between the differ- ent semesters (fall, spring, and summer) and that students tend to miss more classes  (P>0.05) during fall and spring than summer semesters. Gender (P>0.3515) and class sec- tion (P>0.0608) do not seem to significantly affect the aver- age grades in general biology and microbiology. Regarding gender, significant differences were observed in BOTN 210 between females and males average grades. Females tend to do better than males at least in this class. There was a moderate but strongly significant negative correlation (-0.59, P>0.0001***) between the average grades and the number of absences in almost all classes. ANOVA also showed sig- nificant differences for the average grades between the differ- ent class times at P>0.0020*. The Tukey-Kramer test revealed that students perform better in morning classes compared to afternoon classes. The class time plays a significant role in the number of absences as well. Analysis showed that the most “convenient” time for students is late morning or after noon given that they tend to result in fewer absences. In ad- dition, students tend to receive better grades in BOTN 210 that they do in BIOL 330 and BIOL 150 (Means 77.33, 69.42, and 67.82, respectively) which can be justified by the fact that the latter two are more intense than the first. Overall, absences are the only factor among those studied (absences, gender, class section, class difficulty and semester) that seem to affect student’s grades negatively in all three classes (BIOL 150, BOTN 210 and BIOL 330). Typically, factors such as gen- der, and class section do not have any effect on students’ performance. Results for class time show that students may perform better in morning or evening classes. In other cases time does not play any significant role to efficiency.

Study of Factors Affecting Students’ Performance in three Sci­ence Classes: General Biology, Botany, and Microbiology at Fayetteville State University

2010 ◽  
Vol 1 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Stella K. Kantartzi ◽  
Sherrice Allen ◽  
Khalid Lodhi ◽  
Robert L. Grier IV ◽  
My Abdelmajid Kassem
Keyword(s):  
State University ◽  
General Biology ◽  
Factors Affecting

Clinical trials — the personal perspective of the research physician?

2020 ◽  
Vol 75 (3) ◽  
pp. 256-263
Author(s):  
Maria Y. Egorova ◽  
Irina A. Shuvalova ◽  
Olga I. Zvonareva ◽  
Igor D. Pimenov ◽  
Olga S. Kobyakova ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Medical Care ◽  
New Technologies ◽  
Healthcare Providers ◽  
Study Drug ◽  
Well Being ◽  
Personal Perspective ◽  
Public And Private ◽  
Factors Affecting ◽  
To Receive

Background. The organization of clinical trials (CTs) requires the participation and coordination of healthcare providers, patients, public and private parties. Obstacles to the participation of any of these groups pose a risk of lowering the potential for the implementation of CTs. Researchers are a key human resource in conducting of CT. Their motivation for participation can have a significant impact on the recruitment and retention of patients, on the quality of the data collected, which determines the overall outcome of the study. Aims to assess the factors affecting the inclusion of Russian physicians-researchers in CT, and to determine their role in relations with patients-participants. Materials and methods. The study was organized as a part of the Russian multicenter face-to-face study. A survey was conducted of researchers from 10 cities of Russia (20172018). The participation in the survey for doctors was anonymous and voluntary. Results. The study involved 78 respondents. Most research doctors highly value the importance of research for science (4,84 0,39), society (4,67 0,46) and slightly lower for participating patients (4,44 0,61). The expectations of medical researchers are related to improving their financial situation and attaining new experience (n = 14; 18,18%). However, the opportunity to work with new technologies of treatment and diagnosis (n = 41; 52,56%) acted as a motivating factor. According to the questionnaire, the vast majority of research doctors (n = 29; 37,18%) believe that the main reason for patients to participate in CT is to receive quality and free medical care. The most significant obstacle to the inclusion of participants in CT was the side effects of the study drug (n = 38; 48,71%). Conclusions. The potential of clinical researchers in Russia is very high. The patient-participant acts for the research doctor as the subject of the study, and not the object, so the well-being of the patient is not indifferent to the doctor. However, the features of the functioning of our health care system form the motivation of doctors-researchers (additional earnings, professional self-development) and the way they perceive the motivation of patients (CT as an opportunity to receive quality medical care).

PRINCIPLE OF AUTONOMY IN LETTER OF CREDIT: MALAYSIAN PRACTICE

2012 ◽  
Vol 19 (2) ◽  
Author(s):  
Rosmawani Che Hashim ◽  
Ahmad Azam Othman ◽  
Akhtarzaite Abdul Aziz
Keyword(s):  
International Trade ◽  
Significant Role ◽  
Case Law ◽  
Huge Amount ◽  
Letter Of Credit ◽  
Relevant Case ◽  
Method Of Payment ◽  
Almost All

The term letter of credit (LC) is not uncommon in international trade as it is the most frequently used method of payment by seller and buyer in their sales contract. LC serves its significant role by facilitating payment between buyer and seller from different countries, who are always prejudiced towards each other on the issue of payment, especially when the deal involves a huge amount of money. By using LC, the seller and buyer will be represented by their own bankers whose function, among others is to issue an LC for the buyer and pay on presentation of seller’s documents which strictly comply to LC requirements. It is well-known that LC is governed by the principle of autonomy or also referred to as the principle of independence1 which indicates LC, being a contract of payment is totally separate from the underlying sales contract. Banks are concerned with documents only and not with the goods. LC transaction can be governed by the Uniform Custom and Practice for Documentary Credit, known as the UCP through express incorporation which provides the rules relating to LC matters and is adopted in almost all LC transactions. This paper discusses the nature, background and significance of principle of autonomy in LC transaction. In elaborating the provisions on the principle of autonomy in the UCP 600, comparisons between relevant articles in the UCP 500 are highlighted. The discussion also focuses on relevant case law and on the application of the autonomy principle in conventional and Islamic LC. The paper concludes with the finding that Malaysian bankers fully subscribe to the principle of autonomy as outlined by the UCP 600.

scholarly journals Mineral Element Deposition and Gene Expression across Different Tissues of Cherry Valley Ducks

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 238
Author(s):  
Qianqian Song ◽  
Yi Zhang ◽  
Hao Bai ◽  
Li Zhong ◽  
Xiaofan Li ◽  
...  
Keyword(s):  
Significant Negative Correlation ◽  
Mineral Elements ◽  
Breast Muscle ◽  
Thigh Muscle ◽  
Mrna Levels ◽  
High Quality ◽  
Atomic Fluorescence ◽  
Breeding Efficiency ◽  
Almost All ◽  
Different Tissues

This study was conducted to investigate the deposition of several mineral elements and the mRNA levels of mineral-related genes across different tissues of cherry valley ducks. The contents of magnesium (Mg), potassium (K), zinc (Zn), and selenium (Se) in ducks’ breast muscle, thigh muscle, liver, skin, and tibia at the age of 0, 21, 35, 49, and 63 days, respectively, were measured using an atomic fluorescence spectrophotometer, while the mRNA levels of mineral-related genes were detected by qRT-PCR. The results revealed that the dynamics of Mg and K were generally similar in each tissue, with a significant positive correlation (p < 0.05). In the breast muscle, thigh muscle, and liver, the contents of almost all mineral elements reached their peak values (p < 0.05) at the age of 49 to 63 days. Interestingly, the expression of most mineral-related genes was the highest at birth (p < 0.05). In addition, there was a significant negative correlation between the expression of ATP1A1 and the deposition of K (r = −0.957, p < 0.05), and a similar result was found for the expression of ATP8 and the deposition of Zn (r = −0.905, p < 0.05). Taken together, Mg and K could be used as joint indicators for the precise breeding of the high-quality strain of cherry valley ducks, while the age of 49 to 63 days could be used as the reference for the best marketing age. In addition, ATP1A1 and ATP8 could be used as the key genes to detect K and Zn, respectively. Hence, the findings of this study can be used to improve the production and breeding efficiency of high-quality meat ducks.

scholarly journals Factors affecting clay dispersion in oxisols treated with vinasse

2016 ◽  
Vol 37 (6) ◽  
pp. 3997 ◽  
Author(s):  
Thadeu Rodrigues de Melo ◽  
Tiago Santos Telles ◽  
Walquiria Silva Machado ◽  
João Tavares Filho
Keyword(s):  
Sandy Soil ◽  
Physical Quality ◽  
Factors Affecting ◽  
Clay Dispersion ◽  
Water Dispersible ◽  
Dispersive Effect ◽  
Bivalent Cations ◽  
Chemical Attributes ◽  
Almost All ◽  
Dispersible Clay

Vinasse is a potassium-rich waste generated in large amounts by the ethanol production that, applied in the soil, can promote changes in water dispersible clay and in its physical quality. The aim of this study was to evaluate the clay dispersion of Oxisols after vinasse application and correlate it with some chemical attributes. Samples were collected in two Oxisols (155 and 471 g of clay kg-1), put in pots, received dosages of vinasse (0, 50, 100, 150 and 200 m3 ha-1) and remained incubated during 120 days. Phosphorous, organic carbon, pH H2O, pH KCl, pH CaCl2, Al3+, H+Al3+, Ca2+, Mg2+, K+, Na+, Delta pH and the proportion between monovalent and bivalent cations have been evaluated and correlated with the clay flocculation degree. Vinasse changed almost all chemical variables in both soils and increased the flocculation in the sandy soil, but did not change the clayey one. Delta pH, Mg2+ and K+ significantly correlated with the flocculation degree in the sandy soil. It is possible to conclude that the dispersive effect of K+ added by vinasse are irrelevant, considering the flocculant effect caused by the increment in Mg2+ and Delta pH after vinasse application.

scholarly journals Citrus Flavor Technologies: Citrus Oils — Processing, Separation, Application

2003 ◽  
Author(s):  
Elizabeth Berdis ◽  
John Buckley ◽  
John Kraft
Keyword(s):  
Essential Oils ◽  
Significant Role ◽  
Fruit Juice ◽  
Oil Quality ◽  
Factors Affecting ◽  
Separation Technology ◽  
Juice Processing ◽  
Alternative Process ◽  
Flavor Components ◽  
Beverage Industry

Citrus flavors play a significant role in the beverage industry. Citrus-based beverages and those containing citrus flavor components lead the flavor category for beverages today. The essential oils used in flavors are obtained during fruit juice processing. In order to process these essential oils for flavor applications, various separation technologies are used. The purpose of this paper is to present an overview of various aspects of citrus flavor technology. It will give a brief review of factors that affect oil quality during processing operations. Basic distillation principles and factors affecting distillation are presented as well as flavor application, separation technology and alternative process technologies. Paper published with permission.

scholarly journals AN EXPERIMENTAL STUDY ON THE RELAXATION OF BOLTS

2015 ◽  
Vol 16 (1) ◽  
Author(s):  
Muhammad Abid ◽  
Muhammad Shahid Khalil ◽  
Hafiz Abdul Wajid
Keyword(s):  
Dynamic Behaviour ◽  
Relaxation Behaviour ◽  
Bolted Joint ◽  
Factors Affecting ◽  
Elastic Interactions ◽  
Short And Long Term ◽  
The Many ◽  
Almost All ◽  
Static Behaviour

Loss of pre-load with time, commonly known as ‘Relaxation’ is an established phenomena. Behaviour of a bolted joint depends upon the pre-load in the bolts in use, not the pre-load introduced by the mechanic. Loss of pre-load is expected due to the many factors such as embedment relaxation, gasket creep, elastic interactions, and vibration loosening or stress relaxation. In a gasketed joint, due to the gasket flexibility, relaxation is always substantial during preliminary passes, as 80 to 100% loss is not uncommon in almost all the bolts, resulting in a dynamic behaviour. Pre-load in a gasketed joint is stabilized and retained to certain extent in the final passes only. In a non-gasketed joint, due to no gasket and no rotation its static behaviour is concluded. This paper highlights the factors affecting the amount of relaxation with time and presents important considerations that can reduce this. Both the short and long term relaxations are recorded and a ‘best fit’ model for relaxation behaviour is derived.

scholarly journals The Effects of Picking Up Primary School Pupils on Surrounding Street’s Traffic: A Case Study in Hanoi

2020 ◽  
Vol 14 (1) ◽  
pp. 237-250
Author(s):  
Dinh Hiep ◽  
Vu V. Huy ◽  
Teppei Kato ◽  
Aya Kojima ◽  
Hisashi Kubota
Keyword(s):  
Primary School ◽  
Traffic Safety ◽  
Traffic Congestion ◽  
Traffic Management ◽  
Primary Schools ◽  
Traffic Accidents ◽  
Binary Logistic Regression ◽  
Binary Logistic Regression Model ◽  
Factors Affecting ◽  
Almost All

Introduction: One of the significant characteristics of schools in Vietnam is that almost all parents send their children to school and/or pick up their children from school using private vehicles (motorcycles). The parents usually stop and park their vehicle on streets outside the school gates, which can lead to serious congestion and increases the likelihood of traffic accidents. Methods: The objective of this study is to find out factors affecting the picking up of pupils at primary school by evaluating the typical primary schools in Hanoi city. A binary logistic regression model was used to determine factors that influence the decision of picking up pupils and the waiting duration of parents. The behavior of motorcyclists during the process of picking up pupils at the primary school gate has been identified and analyzed in detail by the Kinovea software. Results and Discussion: The study showed that, on the way back home, almost all parents use motorbikes (89.15%) to pick up their children. During their waiting time (8.48 minutes in average), they made a lot of illegal parking actions on the street there by, causing a lot of “cognitive” errors and “crash” points surrounding in front of the primary school entrance gate. Risky picking-up behaviors were significantly observed, i.e. picking-up on opposite side of the school, making a U-turn, backing-up dangerously, parking on the middle of street, and parking on the street next to sidewalk). Conclusion: Based on the analyzed results, several traffic management measures have been suggested to enhance traffic safety and reduce traffic congestion in front of school gates. In addition, the results of the study will provide a useful reference for policymakers and authorities.

scholarly journals Multidisciplinary Research of Sites and Materials of the Baraba Forest-Steppe in Holocene: To the 45th Anniversary of the West-Siberian Archaeological Detachment of the SB RAS

2018 ◽  
Vol 17 (7) ◽  
pp. 18-43
Author(s):  
L. N. Mylnikova ◽  
L. S. Kobeleva ◽  
M. S. Nesterova
Keyword(s):  
Nuclear Physics ◽  
Archaeological Sites ◽  
Forest Steppe ◽  
State University ◽  
The West ◽  
45Th Anniversary ◽  
New Concepts ◽  
Close Cooperation ◽  
Almost All

Purpose. We show the main directions of work of the West Siberian archaeological detachment (team) of the Institute of Archaeology and Ethnography SB RAS, demonstrate the methods used and present the results and the possibilities of their interpretation. Results. In 2018, the West Siberian archaeological detachment celebrates the 45th anniversary of its formation. The long-term head of the team is academician V. I. Molodin. All studies are carried out within the framework of a multidisciplinary approach starting from the search for archaeological objects (sites Tartas-1, Vengerovo-2, -2A, -6, Staryi Tartas-5, Ust’-Tartas-1,-2; Chicha-1, Vengerovo-6 and others) to their laboratory investigation. We widely apply a range of analytical methods in all of our activities including almost all stages of research: from the search for archaeological sites to their processing in close cooperation with various scientists. We collaborate with specialists from the Institute of Geology and Mineralogy SB RAS, Novosibirsk, Russia; the Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia; the Institute of Solid State Chemistry and Mechanochemistry SB RAS, Novosibirsk, Russia; the Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia; the Institute of Nuclear Physics SB RAS, Novosibirsk, Russia; Novosibirsk National Research State University, Novosibirsk, Russia; the Center of Collective Use (CCU) “Geochronology of Cenozoic”, Novosibirsk, Russia; Heidelberg University, Heidelberg, Germany; Ludwig-Maximilian Munich Institute, Munich, Germany; the Center of Archaeology of Kurt Engelhorn, Mannheim, Germany and others. Conсlusion. Studies of the West Siberian archaeological detachment, which were carried out over the recent two decades, have provided new data that develop existing points of view, clarify existing concepts or allow to build new concepts of historical and cultural processes. It is obvious that the modern paradigm of science requires participation of specialists in natural sciences at all stages of archaeological research.

Sign in / Sign up

Export Citation Format

Share Document