Welcome to send your manuscript to: sciencepub@gmail.com

No.

Titles / Authors /Abstracts

Full Text

No.

1

Corporate Social Responsibility on Staff Development in Tertiary Education in Imo State

Kelechi Augusta Ihedimbu, C. M. Uche and C. Amini Philips

Department of Educational Management, Faculty of Education, University of Port Harcourt, P.M.B. 5323, Port Harcourt, Nigeria.

noblekelechi@gmail.com

Abstract: This study assessed the contributions of corporate organizations on staff development in tertiary education in Imo State. Descriptive survey design was adopted for the study. Two research questions and two null hypotheses guided this study. The 5 government tertiary educational institutions in Imo State made up the population of the study. A sample size of 325 academic staff and 445 administrative staff were drawn using purposive sampling technique. The research instruments used to elicit information from the respondents were document analysis and twenty-four itemed questionnaire titled “Corporate Social Responsibility on Staff Development Questionnaire (CSROSDQ). The reliability of the questionnaire was determined through test re-test method which gave a reliability coefficient value of 0.76. Mean Scores and Rank Order Scores were the statistical tools used to answer the research questions while z-test was used to test the null hypothesis at 0.05 level of significance. The findings revealed among others the areas which corporate organizations could contribute to staff development in tertiary education include: in-service training, seminars, workshops, funds, human resources, material resources, other services and activities that enhance staff training and development in tertiary education and that the extent to which corporate organizations contribute to staff development in tertiary educational institutions is very low. It was recommended among others that corporate organizations should be contributing to staff development in tertiary educational institutions for attainment of tertiary educational goals which leads to the development of society they are operating in.

[Ihedimbu, K. A., C. M. Uche and C. Amini Philips. Corporate Social Responsibility and Research Support in Tertiary Education in Imo State, Nigeria. Researcher 2018;10(10):1-8]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 1. doi:10.7537/marsrsj101018.01.

Keyword: Corporate organizations, Staff development, Academic staff, human resources

Full Text

1

2

Safety Culture In Building Construction Industry In Nigeria

Maryam Abidemi Akomolafe

Osun State Polytechnic, Department Of Building Construction, P.M.B 301, Iree, Osun State.

akomolafe01@yahoo.com

Abstract: Measures of safety are after-the-fact measures; namely, that safety is measured after injuries have already occurred. In recent years, there has been a movement away from safety measures purely based on retrospective data or ‘‘lagging indicators,’’ such as accident rates, toward so-called ‘‘leading indicators’’ such as measurements of safety climate. In this research, safety performance measurement of various construction firms as well as the overall construction industry of Nigeria based on an investigative site survey has been done. Salient findings of the study are ear defenders not worn (while using noisy equipment); protective footwear not worn; and face masks not worn (in dusty conditions). Most of the safety nonperformance issues belong to self-protection category. This shows that the site workers themselves are either unaware of the importance of personnel safety practices or they do not want to wear protective gears and kits as they consider it as a hindrance in their work productivity. Also, it was observed that the site management seemed non-interested in emphasizing the need of personnel safety practices among their workers. Overall, most of the companies lie in the range of extremely unsafe to moderately unsafe range thus showing that the overall level of the industry as regard to site safety needs drastic improvement. Safety seems to be on the less priority on the agenda even during the execution phase which is not a healthy trend. A mean value of Safety Performance Index of 0.52 was assessed for the building construction sites, which indicates that even the basic practices required for safety are not present at most construction sites. Also, the scattered safety performance levels of firms indicates lack of standard safety management systems. The major recommendations of the study are safety rules and regulations need to be defined, documented and enforced at the industry level thereby incorporating administrative body for occupational safety and health implementation. Awareness programs need to be developed and implemented through appropriate arrangement of training in safety rules, formal and informal education and career development programs.

[Maryam Abidemi Akomolafe. Safety Culture In Building Construction Industry In Nigeria. Researcher 2018;10(10):9-16]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 2. doi:10.7537/marsrsj101018.02.

Keywords Safety Performance Measurement, Safety Non-Performance Index, Safety Performance Index, Developing Countries, Construction Industry, Nigeria

Full Text

2

3

TIMI Risk Index (TRI) as a Predictor of Angiographic No-reflow Phenomenon after Primary Percutaneous Coronary Intervention in Patients with STEMI

Metwally H. Elemary, MD; Eman S. Elkeshk, MD; Fathy M. swailem, MD; Mohammed S. Abd Elhafeez, M.Sc.

Department of Cardiology, Faculty of Medicine, Benha University

Mohammedsoliman861@yahoo.com

Abstract: Background/aim: The thrombolysis in myocardial infarction (TIMI) risk score, global registry of acute coronary events (GRACE) risk score (GRS) and the TIMI risk index (TRI) have been reported in acute coronary artery disease patients. We investigated whether admission TRI is associated with no-reflow (NRF) Phenomenon, in-hospital major adverse cardiac events (MACE) and in-hospital mortality in patients underwent primary percutaneous coronary intervention (P-PCI). Materials and methods: ST-segment elevation myocardial infarction (STEMI) patients treated with p-PCI were included in the study. TRI was calculated on admission using specified variables. All patients were subjected to informed consent, detailed history taking, clinical evaluation, ECG analysis and coronary risk factor assessment. Additionally, Killip class examinations of all patients were recorded. We defined the angiographic NRF phenomenon as a coronary TIMI flow grade of ≤ 2 after the vessel was recanalized or a TIMI flow grade of 3 together with a final myocardial blush grade (MBG) of <2 in a manner as described in previous studies. Results: A total of 319 patients who underwent p-PCI were enrolled in the study. In terms of age, NRF patients were older than reflow patients. Killip class III-IV designations were more common in NRF patients. TRI values were significantly greater in the NRF group. TRI was an independent predictor of NRF. Conclusion: TRI significantly related to no-reflow and in-hospital MACE and in-hospital mortality. TRI uses simple and inexpensive methods for evaluating patients with STEMI. In addition, high TRI may be helpful in identifying high risk patients and determining appropriate treatment strategies.

[Metwally H. Elemary, Eman S. Elkeshk, Fathy M. swailem, Mohammed S. Abd Elhafeez. TIMI Risk Index (TRI) as a Predictor of Angiographic No-reflow Phenomenon after Primary Percutaneous Coronary Intervention in Patients with STEMI. Researcher 2018;10(10):17-24]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 3. doi:10.7537/marsrsj101018.03.

Keywords: Global registry of acute coronary events (GRACE) risk score (GRS), TIMI risk index (TRI), Acute myocardial infarction, No-reflow (NRF), percutaneous coronary intervention (PCI).

Full Text

3

4

Exponentiated Exponential Lomax Distribution and its Properties

Maradesa Adeleke^1*, Akomolafe Abayomi Ayodele² and Adebola Femi Barnabas³

^1,2,3Department of Statistics, Federal University of Technology Akure, Nigeria

 maradprime1@gmail.com¹, akomolafe01@gmail.com² and femi_adebola@yahoo.com³

Abstract: This research study the generalization of exponentiated version of Exponential lomax Distribution (ELD) called Exponentiated exponential lomax distribution (EEPD) through its distribution function and mathematical derivation of their moment, reliability, cumulative distribution function, Renyi Entropy and hazard rate function, Median, Quartile and Quantile Function. The distribution was found to generalize some known distributions thereby providing a great flexibility in modeling heavy tailed, skewed and bimodal distributions.

[Maradesa Adeleke, Akomolafe Abayomi Ayodele and Adebola Femi Barnabas. Exponentiated Exponential Lomax Distribution and its Properties. Researcher 2018;10(10):25-34]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 4. doi:10.7537/marsrsj101018.04.

Keywords: Exponentiated-exponential Lomax Distribution (EELD), Moment generating function, Hazard Function, Entropy, Median, Quartile, Quantile Function.

Full Text

4

5

Time-Dependent Analysis Of Waiting And Service Time Behaviour In Discrete Time Queue; A Case Study Of First Bank Plc

Akomolafe Abayomi. A.

Department of Statistics, Federal University of Technology, Akure, Nigeria.

akomolafeayotade@gmail.com

Abstract: In our daily life we generally find a long queue at the Automated Teller Machine [ATM], as a result of this customers have to spend considerable amount of time in queue. In such a situation if instead of using a single ATM machine if we use double ATM machine then it will decrease the waiting time in queue. Against this background, the queuing process is employed with inter arrival time and service time. The data for this study was collected from primary source and is limited to ATM service point of a standard Bank where the data collected incorporate the attributes of queuing on the number of customers for four weeks. Eight ATMs at a steady service rate of 0.18 customers per minute is found to be optimal and the waiting time are found to be relatively higher during the hours of 09:00am to 12:00 noon. The research thus reveals that queue exist although its theory is applicable in finding optimal service levels, waiting time might still be lengthy because of some factors. We then derive the arrival rate, service rate, utilization rate, waiting time in the queue and the average number of customers in the queue based on the data Service unavailability was observed to be a contributory factor to queue formation at the ATM point. The queuing process employed with interarrival time and service time do not follow exponential distribution hence, in reducing queue problem, high routine maintenance regime should be actively implemented, backup-staffs could be engaged during peak periods to handle any additional demand instead of the alternative of installing the rather capital-intensive ATM which might be of less utility for most business hours. Queue management should also be made an active part of the bank’s overall strategic queue management processes.

[Akomolafe Abayomi. A. Time-Dependent Analysis Of Waiting And Service Time Behaviour In Discrete Time Queue; A Case Study Of First Bank Plc. Researcher 2018;10(10):35-43]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 5. doi:10.7537/marsrsj101018.05.

Keywords: Queuing Theory, Waiting Time, Service Rate, Arrival Rate, ATM, Optimal Service Level

Full Text

5

6

Stem Cell and CRISPR-Cas9 Research Literatures

Mark Herbert, PhD

39-06 Main Street, Flushing, NY 11354, USA, ma8080@gmail.com

Abstract: Stem cells are derived from embryonic and non-embryonic tissues. Most stem cell studies are for animal stem cells and plants have also stem cell. Stem cells were discovered in 1981 from early mouse embryos. Stem cells have the potential to develop into all different cell types in the living body. Stem cell is a body repair system. When a stem cell divides it can be still a stem cell or become adult cell, such as a brain cell. Stem cells are unspecialized cells and can renew themselves by cell division, and stem cells can also differentiate to adult cells with special functions. Stem cells replace the old cells and repair the damaged tissues. Embryonic stem cells can become all cell types of the body because they are pluripotent. Adult stem cells are thought to be limited to differentiating into different cell types of their tissue of origin. This article introduces recent research reports as references in the related studies.

[Mark H. Stem Cell and CRISPR-Cas9 Research Literatures. Researcher 2018;10(10):44-67]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 6. doi:10.7537/marsrsj101018.06.

Key words: stem cell; CRISPR-Cas9; life; research; literature

Full Text

6

7

Fault Ride-Through Study and Control of a Wind Turbine Driving Squirrel Cage or Doubly-Fed Induction Generator; Comparative Study

Mahmoud Essam M. Harby¹, H. M. El Zoghby², Aboubakr Salem³, S.E. Elmasry⁴, Adel El Samahy⁵

Electrical Power and Machines Engineering, Faculty of Engineering, Helwan University, Egypt

¹ eng.mahmoudessam@Yahoo.com, ² helmy_028123288@yahoo.com, ³ aboubakr.salem.hu@gmail.com, ⁴drsaidelmasry@hotmail.com, ⁵ el_samahya@yahoo.com

Abstract: The renewable energy systems are going to take over most of the non-renewable energy systems, so lots of research is being done to ensure the stability and reliability of the renewable energy systems. This paper is concerned about the wind energy systems and ensuring their behaviour and performance during and after the abnormal cases like fault ride-through. Two complete models of a grid connected wind systems are going to be simulated in MATLAB program, the first one will be a grid connected wind turbine driving a three-phase squirrel cage induction generator SCIG and the other model will be a grid connected wind turbine driving a three phase doubly-fed induction generator DFIG. The frequency of each system will be displayed and compared to the frequency of the other system upon fault ride-through (three-phases SC fault) and under the effect of PID controller tuned by genetic algorithm technique. The different power responses and rotor speed of both generators are going to be analysed graphically and compared to each other upon fault ride-through and under the effect of the designed controller (genetic algorithm PID controller).

[Mahmoud Essam M. Harby, H. M. El Zoghby, Aboubakr Salem, S.E. Elmasry, Adel El Samahy. Fault Ride-Through Study and Control of a Wind Turbine Driving Squirrel Cage or Doubly-Fed Induction Generator; Comparative Study. Researcher 2018;10(10):68-72]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 7. doi:10.7537/marsrsj101018.07.

Keywords: fault ride-through, wind turbine, three-phases squirrel-cage induction generator, pitch angle controller, three- phase doubly-fed induction generator, genetic algorithm PID controller.

Full Text

7

8

Application of the Central Courtyard of Traditional Architecture in Modern Architecture

Arsalan Korooni, Alireza Sahraeian

Master of Architecture, Bam Branch, Islamic Azad University, Bam, Iran

Abstract: Time constraints have separated the architects from traditional architecture. These constraints can be economical, social, cultural and political. However, the existence of constraints in the above cases is due to time. Art and architecture have always been under certain known rules and regulations and are strongly and constantly connected to culture, behavior patterns and values of society. This is why the architectural styles of each period reflect the culture and art in that period. This study, entitled "Application of the central courtyard of traditional architecture in the modern architecture" studies the effect of local culture in regions, Western culture, and social factors on the morphology and position of the courtyard in traditional, modern and Iran's current houses. In this regard, a number of traditional structures, including Rasoulian and Arab homes and modern structures with a central courtyard including the building of Khavaran culture center were compared. The results show that although architects have tried to be inspired by the structures of modern architecture, but many do not adhere to the principles and concepts of traditional designs.

[Arsalan Korooni, Alireza Sahraeian. Application of the Central Courtyard of Traditional Architecture in Modern Architecture. Researcher 2018;10(10):73-80]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 8. doi:10.7537/marsrsj101018.08.

Keywords: Modern architecture, traditional architecture, the central courtyard.

Full Text

8

9

Copepoda Parasites In Economically Important Fish Mugilidae (Mugil cephalus) and (Liza falcipinnis) From Lac Nokoue Lagoon In Republic Of Benin, West Africa.

^1,2Nike F. Aladetohun,² Nestor G. Sakiti, ³Emmanuel E. Babatunde.

¹Federal college of Fisheries and Marine Technology, Ahmadu Bello way, Victoria Island, Lagos, Nigeria. ²Laboratory of Parasitological and Ecology of parasites Department of Zoology and Genetics, Faculty of Sciences and Technology, University of Abomey Calavi, Republic of Benin, West Africa, ³Department of Marine Sciences, University of Lagos, Akoka, Lagos, Nigeria.

adenike63@yahoo.com

Abstract: Fish parasitology is an indispensable tool in aquatic health studies and a basic understanding of richness of a community parasitism in many localities is essential for instituting control. Many copepod parasites are ecto-parasites which negatively affect the appearance and reduced production of species of economically important fish, both from the wild and fish farms, thus making them difficult to market. In this study, copepod parasitic investigation was carried out in gills of 856 fish mugilidae (Mugil cephalus and Liza falcipinnis) in three stations (Ganvie, and Djdje and Zogbo) of Lac Nokoue lagoon. In the three stations, three species of parasitic copepod were found: Nipergasilus bora, Ergasilus latus and Ergasilus lizae The highest total percentage copepod prevalence was found in Ganvie (86.23%) and the least in Djdje (63.14%). There is significant difference P<0.05 in the rate of infestation of Liza falcipinnis at Djdje than the other two stations, where as Mugil cephalus shows no significant difference in the rate of infestation in the three stations. The research revealed higher number of parasite copepods during the rainy season.

[ Nike F. Aladetohun, Nestor G. Sakiti, Emmanuel E. Babatunde. Copepoda Parasites In Economically Important Fish Mugilidae (Mugil cephalus) and (Liza falcipinnis) From Lac Nokoue Lagoon In Republic Of Benin, West Africa. Researcher 2018;10(10):81-87]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 9. doi:10.7537/marsrsj101018.09.

Keywords: Copepod parasites, Mugilidae Fish, Lac Nokoue Lagoon

Full Text

9

10

Development of Superpave Performance Grading Map for Pakistan

Kamran Muzaffar Khan¹, Tahir Sultan², Qazi Umar Farooq³, Kaffayatullah Khan⁴, Faizan Ali⁵

^1. Associate Professor, Department of Civil Engineering, UET Taxila, Pakistan

^2. Assistant Professor, Civil Engineering Department, Bhauddin Zikriya University, Multan Pakistan

³ Assistant Professor, Department of Civil Engineering, UET Taxila, Pakistan

^4. Assistant Professor, Iqra National University Peshawar Pakistan

⁵, Research Scholar, Department of Civil Engineering, UET Taxila, Pakistan

E-mail: kamran.muzaffar@uettaxila.edu.pk

Abstract: Binder plays a crucial role in asphalt performance, due to which it has been given immense importance by the asphalt industry. Binder grading systems are used to characterize binders based on their physical properties. Pakistan is facing the problem of rutting in asphaltic concrete due to extreme weather conditions and heavy traffic loadings. This work aims characterization of indigenous binder based on SUPERPAVETM binder requirements. Asphalt performance grades for Pakistan were formulated on the basis of comprehensive air temperature data collection and analysis. The whole country was divided into 7 different performance grade zones on the basis of previous 20 years temperature data collected from 30 weather stations. The recommended grades are PG 76-4, PG 70-10, PG 70-4, PG 64-10, PG 64-4, PG 58-10 and PG 58-4. Also a temperature zoning map has been proposed to be implemented in Pakistan.

[Kamran Muzaffar Khan, Tahir Sultan, Qazi Umar Farooq, Kaffayatullah Khan, Faizan Ali. Development of Superpave Performance Grading Map for Pakistan. Researcher 2018;10(10):88-94]. ISSN 1553-9865 (print); ISSN 2163-8950 (online). http://www.sciencepub.net/researcher. 10. doi:10.7537/marsrsj101018.10.

Keywords: Binder, Performance, Zoning, Asphalt

Full Text

10