3D-Position Determination using GNSS Techniques – A Comparative Analysis

Author(s):  
Temitayo A. Adeseye ◽  
Gafar Suara

This study was carried out to determine 3D-position of selected points within Obafemi Awolowo University. The points were located at Africa Regional Institute for Geospatial Information Science and Technology (AFRIGST), Central Technological and Laboratory Workshops (CTLW), main Bus Stop, Religion ground, New Environmental Design and Management (New EDM), and Spider building. China HuaCe Corporation (CHC) GPS and Promark 3 GPS were used to carry out observation on the selected points. The data gotten were post processed using GNSS solution software for Promark3, Compass software for CHC GPS and the result gotten were compared with the known coordinates of those points. The data was analyzed using Statistical Package for Social Sciences (SPSS) to determine the most accurate instrument between the two. The occupation time for the two instruments on each station was 45 minutes. Analysis of Variance (ANOVA) and Chi square Variance analysis were conducted, the result showed that there is no significant difference between the observations of the two instruments in comparison with the adjusted coordinate. It can be concluded that any of the two instruments can be used for 3D point positioning to obtain accurate result.

2010 ◽  
Vol 5 (2) ◽  
pp. 86
Author(s):  
Scott Marsalis

A Review of: Enger, K. B. (2009). Using citation analysis to develop core book collections in academic libraries. Library & Information Science Research, 31(2), 107-112. Objective – To test whether acquiring books written by authors of highly cited journal articles is an effective method for building a collection in the social sciences. Design – Comparison Study. Setting – Academic library at a public university in the US. Subjects – A total of 1,359 book titles, selected by traditional means (n=1,267) or based on citation analysis (n=92). Methods – The researchers identified highly-ranked authors, defined as the most frequently cited authors publishing in journals with an impact factor greater than one, with no more than six journals in any category, using 1999 ISI data. They included authors in the categories Business, Anthropology, Criminology & Penology, Education & Education Research, Political Science, Psychology, Sociology/Anthropology, and General Social Sciences. The Books in Print bibliographic tool was searched to identify monographs published by these authors, and any titles not already owned were purchased. All books in the study were available to patrons by Fall 2005. The researchers collected circulation data in Spring 2007, and used it to compare titles acquired by this method with titles selected by traditional means. Main Results – Overall, books selected by traditional methods circulated more than those selected by citation analysis, with differences significant at the .001 level. However, at the subject category level, there was no significant difference at the .05 level. Most books selected by the test method circulated one to two times. Conclusion – Citation analysis can be an effective method for building a relevant book collection, and may be especially effective for identifying works relevant to a discipline beyond local context.


Author(s):  
C. R. Aniemena ◽  
F. N. Ilika ◽  
P. O. Nwosu ◽  
P. O. Adogu ◽  
E. C. Azuike ◽  
...  

Aim: The use of various substances is very common among the populace. These agents are readily abused by adolescents and youths who are introduced to these substances at an early age in life. This thus leads to abuse and misuse that eventually has a catastrophic outcome to the society at large. The aim of this study was to determine the prevalence of substance use among in-school and out-of-school adolescents; a comparative analysis in Anambra State, Nigeria. Study Design: This was a cross-sectional comparative study. Place and Duration of Study: The study was conducted in schools, parks and markets of Onitsha municipal area of Anambra State, Nigeria, from September 2019-April 2020. Methodology: A total of 250 in-school and 250 out-of-school adolescents aged 10-19 years, within Onitsha municipal area was sampled through the use of a semi-structured interviewer administered questionnaire, that was adapted from a WHO designed instrument on drug use among non-student youths. Frequency distributions were developed, while associations between variables were tested using t-test, fisher’s test, and chi-square. Results: The results showed that most participants were males with mean ages of both sexes being 16.7 among the in-school and 16.1 in the out-of-school. There was statistically significant difference in alcohol consumption between in-school compared to out-of-school, p=0.001; and cigarette smoking, p=0.001. However, inhalants use was more among in-school compared to out-of-school, though not statistically significant. The overall prevalence of substance use was 58.4%, with 80.4% among the out-of-school compared to 36.4% with the in-school participants. Conclusion: Substance use is common among in-school and out-of-school adolescents. The prevalence of substance use was significantly higher among out-of-school compared to in-school adolescents. Parents should teach their children the dangers of substance abuse while Schools and governments should ensure inclusion of such in the curriculum.


Author(s):  
Onome Norah Alakpodia

The purpose of this study was to examine social networking use among Library and Information Science students of the Delta State University, Abraka. In this study, students completed a questionnaire which assessed their familiarity with social networking sites, the purpose for which they use social networking site and their most preferred sites to use. Furthermore the study tested two hypotheses. The collected data were analyzed using descriptive statistics, t-test and chi square tests of significance. Results indicated that almost all of the sampled students were familiar with social networking and their most used site is Facebook. Findings also revealed that there is no significant difference in the usage of social networking sites by male and female LIS students and that there is significant relationship between the age of the students and social networking sites that they use.


2016 ◽  
Vol 65 (4/5) ◽  
pp. 350-368 ◽  
Author(s):  
Waqar Ahmed ◽  
Muhammad Shahid Soroya

Purpose The purpose of this study was to explore the number, difference and ratio of professionals and non-professionals heading toward non-academic special libraries (NASL). This study also explored the difference of provision of services based on educational qualifications. Design/methodology/approach Quantitative survey research method and questionnaire as a data collection tool was used to conduct the study. The questionnaire contained four educational levels against the 18 services variables. No list or directory being available, 71 special libraries were assured to be there in Lahore through snowball-sampling technique. Out of 71 questionnaires, 41 were returned and analyzed using Chi-Square test in Statistical Package for Social Sciences. Findings Findings indicated that 56 per cent of the libraries were headed by LIS professionals, while rest of 44 per cent of the libraries was headed by persons with no professional education. Chi-Square test’s p value indicated the significant difference in the orientation, reference service and document reservation service. The professionally qualified library managers were found better at providing librarians’ end services. Originality/value The present study is the first of its kind in Pakistan, which marked the vacant positions and indicated the differences of services based on level of education. It depicted the electronic, librarians end, and technical knowledge and multi-factor services and measured its variation on the educational grounds.


Author(s):  
Jehanie May Ader Macasawang

In the digital era, the ability of schools to access and provide ICT resources is very important. This study examines the level of accessibility and use of ICT resources in school management in Mindanao State University's main campus (MSU MC). It aims to give a picture of the current profile of the ICT facilities in the university particularly those employed for school management through describing the accessibility of those ICT facilities by taking into account their availability and convenience of access and its use by pertaining to the ICT user-ability of the human resource of the university. This study was incited due to the visible difficulties met by the students as well as the teacher and staff in the school management activities in MSU MC despite the application of ICT in it. The data for this study were collected through a semi-structured survey, interviews, and document reviews of related literature. Correlation of the variables was tested using the chi-square test. And the comparative analysis of the opinions of the groups of respondents was done through a t-test. The results of this study find that over-all, the current ICT facility of the university is claimed as fairly effective in school management that only Plagiarism is seen as the most prevalent negative consequence on its implementation. In addition, the correlation analysis in this study discloses that ICT accessibility and user-ability have no direct relationship with effective school management. And although the comparative analysis showed that there is a significant difference of opinions between the groups of respondents, its statistical value proved only that the variance of the opinions of the groups of respondents is only little. These results evidently reflect that the ICT facility in MSU MC is not so much defective. However, the research results also reveal that the problems in the availability and convenience of ICT tools in MSU MC as well as in the user-ability of the human resource in ICT are pretty much important aspects of an excellent ICT facility like strong internet bandwidth, need of maintenance and update on latest ICT trends, motivation to use ICT tools, etc. Thus, this study recommends that the ICT resources in MSU MC for school management should be further developed as seen appropriate


2020 ◽  
Vol S.I. (1) ◽  
pp. 155-167
Author(s):  
Emmanuel Maziti ◽  
◽  
Agnes Mujuru ◽  

Pandemics have been experienced since the existence of the known world. Their nature of operation has robbed many people the eye to see the bright future ahead. This study focused on how the recently experienced world epidemic namely covid-19 which started in China’s Wuhan province in 2019, affected the levels of hopelessness in the general population in Zimbabwe. The study adopted a quantitative approach using the quasi-experimental design. 103 participants, above 18 years, both males and females were selected using an online Beck Hopelessness scale. Descriptive statistics, Pearson chi-square and ANOVA were computed, and analysis was aided using Microsoft excel and Statistical Package for Social Sciences (SPSS) version 16.0. Results revealed that the sample had a moderate level of hopelessness, with no significant differences in different age groups as well as no significant difference in levels of hopelessness between males and females. The study concluded that pandemics are associated with some levels of hopelessness and recommended that as the nations are disseminating Covid-19 facts, statistics and prognosis, it must be accompanied by hopeful messages to kindle hope in the general population.


2020 ◽  
Vol 63 (6) ◽  
pp. 2016-2026
Author(s):  
Tamara R. Almeida ◽  
Clayton H. Rocha ◽  
Camila M. Rabelo ◽  
Raquel F. Gomes ◽  
Ivone F. Neves-Lobo ◽  
...  

Purpose The aims of this study were to characterize hearing symptoms, habits, and sound pressure levels (SPLs) of personal audio system (PAS) used by young adults; estimate the risk of developing hearing loss and assess whether instructions given to users led to behavioral changes; and propose recommendations for PAS users. Method A cross-sectional study was performed in 50 subjects with normal hearing. Procedures included questionnaire and measurement of PAS SPLs (real ear and manikin) through the users' own headphones and devices while they listened to four songs. After 1 year, 30 subjects answered questions about their usage habits. For the statistical analysis, one-way analysis of variance, Tukey's post hoc test, Lin and Spearman coefficients, the chi-square test, and logistic regression were used. Results Most subjects listened to music every day, usually in noisy environments. Sixty percent of the subjects reported hearing symptoms after using a PAS. Substantial variability in the equivalent music listening level (Leq) was noted ( M = 84.7 dBA; min = 65.1 dBA, max = 97.5 dBA). A significant difference was found only in the 4-kHz band when comparing the real-ear and manikin techniques. Based on the Leq, 38% of the individuals exceeded the maximum daily time allowance. Comparison of the subjects according to the maximum allowed daily exposure time revealed a higher number of hearing complaints from people with greater exposure. After 1 year, 43% of the subjects reduced their usage time, and 70% reduced the volume. A volume not exceeding 80% was recommended, and at this volume, the maximum usage time should be 160 min. Conclusions The habit of listening to music at high intensities on a daily basis seems to cause hearing symptoms, even in individuals with normal hearing. The real-ear and manikin techniques produced similar results. Providing instructions on this topic combined with measuring PAS SPLs may be an appropriate strategy for raising the awareness of people who are at risk. Supplemental Material https://doi.org/10.23641/asha.12431435


2019 ◽  
Vol 3 (2) ◽  

Radiographic Mandibular Indices serve as easy and relatively cheap tools for evaluating bone mineralization. Objectives: To examine the effect of age and gender on three mandibular indices: the panoramic mandibular index (PMI), the mandibular ratio (MR) and the mandibular cortical index (MCI), among Libyan population. Methods: The three indices were measured on 317 digital (OPGs) of adult humans (155 males, 162 females). The sample was divided into six age groups (from 18-25 years through 56-65 years). The measurements were analyzed for interactions with age and sex, using SPSS (Statistical Package for Social Studies) software version no. 22. The tests employed were two way ANOVA, the unpaired T-test and chi-square test. Results: The mean PMI fluctuated between 0.37 s.d. 0.012 and 0.38 s.d. 0.012. among the sixth age groups. One-way ANOVA statistical test revealed no significant of age on PMI. On the other hand gender variation has effect on PMI, since independent sample t-test disclosed that the difference between the male and female PMI means statistically significant. ANOVA test showed that the means of MR among age groups showed a negative correlation i.e. MR mean declined from 3.01 in 18-25 age groups to 2.7 in 55-65 age groups. In contrary, the gender showed no effect on MR according two sample t-test at p> 0.05. In regards with MCI, statistical analysis showed that it affected by age that is C1 was decreasing by age while C2 and C3 were increased by age. Using chi square test the result indicated that there is a significant difference among the different age group and the two genders in MCI readings. Conclusion: PMI was influenced significantly by age but minimally by the gender. MR is not affected by gender but has a negative correlation with age. MCI is affected by both age and gender


2020 ◽  
Vol 11 (01) ◽  
Author(s):  
Madhu Bala ◽  
Neetu Chaudhary

In the current time, the use of technologies has become propensity more than necessity. Nobody has gotten away from them nor left youth or old. It's totally relying upon us How to utilize it? One such live innovation is a Smartphone. At only one touch we approach any data about the entire world. It is very easy to carry in our pocket so everyone can use it anytime whenever. Smartphone has some constructive as well as some cynical aspects too. Nomophobia is a negative face of the smartphone. Nomophobia is the irrational dread of being without cell phones or being not able to utilize phones (situational phobia) for some reason such as some signal or battery issues. Theprimary point of the current research is to find out the proportion of Nomophobia among understudies with regardof gender and age in Agra city. For this purpose, a total number of 300 students were selected by randomization (150 males and 150 females) from the age scope of 15-20 years. The data was taken by using a self-administered questionnaire NMP-Q developed by Yilidirim and Correia. The obtained data were analyzed using descriptive statistics, Mean and Chi-square. Results revealed that there is a significant difference between male and female score on nomophobia. The other result indicates that early adolescents positively related to Nomophobia as compare to late adolescents. In India, one person can use multiple cell phones. There is no minimum age to use mobile phones. It is adding fuel to the pre-existing problem of Nomophobia. Telecom Administrative Authority of India (TRAI) should assume a functioning job by making an arrangement/law that "setting based methodology" on cell phone limitations among individuals ought to be followed. A demonstration will be detailed, under this demonstration. There ought to choose the least age for portable use. It will assist a great deal with curbing the circumstance.


Author(s):  
Ma. Dulce C. Guillena

Gonado-somatic index and fecundity are tools for measuring the sexual maturity and ability of animals to reproduce.  This study investigates the reproduction of Trichiurus lepturus. Specifically, this aimed to determine the sex ratio, the GSI, the relationship between fecundity and total length, fecundity and total weight, fecundity and ovary weight. The Descriptive Method of research was used.  Percentage and chi-square was utilized in determining the percentage of occurrence and sex ratio respectively.   Pearson r Product Moment Coefficient of Correlation was used to determine the relationships of the parameters. The study revealed that females outnumbered males and the sex ratio for different month showed significant difference.  Spawning season was observed to occur in November and December as revealed in its GSI values and it synchronized with the full and new moon phases.  Fecundity is positively correlated with body weight, body size, and ovary weight where ovary weight is observed to be the best index for fecundity.  The results of this study could be used further for formal stock assessment of cutlassfish fishery.


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