scholarly journals Distribution, diversity and abundance of some insects around a telecommunication mast in Ilorin, Kwara State, Nigeria

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Olukayode James Adelaja ◽  
Adeolu Taiwo Ande ◽  
Gafar Deji Abdulraheem ◽  
Isaac Ayanfe Oluwakorode ◽  
Olushola Abel Oladipo ◽  
...  

Abstract Background The preponderant use of wireless telecommunication in the twenty-first century has enabled ease and efficient communication and a pervasive occurrence of electromagnetic fields (EMFs) that has significantly impacted the ecosystem. This study looks at the effect of radiations from wireless telecommunication EMF on the distribution, diversity and abundance of some insects in Nigeria. The study was undertaken in Ilorin, Kwara State, which is located in the Guinea Savannah belt of Nigeria. The chosen choice of study area was one with a telecommunication mast devoid of residential and human interference within a 10 km radius. Five sampling stations were selected around the mast and a control station. EMR intensity levels and pollinating insect number were monitored daily for 22 weeks using an acoustimeter and malaise traps. Collected insects were identified morphologically using appropriate keys. Results The mean electromagnetic radiation (EMR) intensity was significantly (P < 0.05) highest (1.58 ± 1.52 V/m) at sampling station B, and there was an increase in EMR intensity as the radius reduced around the mast. A total of 1878 insects were recovered from the study with the dominant species in terms of abundance of insects collected from the study being Musca domestica (0.39) followed by Apis mellifera (0.31) and Locusta migratoria (0.30), while the least dominant species Tetramorium caespitum (0.23). Conclusions Indeed, EMR intensity has an effect on the distribution, diversity and abundance of insects and there is a need to reduce the number of masts in use in the environment by encouraging telecommunication service providers to jointly use the same mast in an area for broadcast.

2017 ◽  
Vol 26 (44) ◽  
pp. 85 ◽  
Author(s):  
Carlos Mario Restrepo ◽  
Octavio José Salcedo-Parra ◽  
Juan Manuel Sánchez-Céspedes

In this paper, the main features of MPLS Traffic Engineering are presented to illustrate how telecommunication service providers use them to create interconnections between each other in order to offer telecom services satisfying QoS commitments. Based on previous traffic models, a new model, which deals with traffic queue balancing for different Classes of Service, and for a provider using another provider´s network is presented. The model output shows that carrying another operator’s traffic may increase delays in an undesirable manner, forcing the carrier to increase the serving rate of LSRs until Utilization is below 60 %. In order to validate the model, a number of network scenarios are implemented in the Wolfram Mathematica 10.1 Study Version, based on study case configurations of an MPLS network. The total global model is useful for future implementation of test-beds of interconnected providers under an MPLS environment.


Author(s):  
M. A. Burhanuddin ◽  
Ronizam Ismail ◽  
Nurul Izzaimah ◽  
Ali Abdul-Jabbar Mohammed ◽  
Norzaimah Zainol

Recently, the mobile service providers have been growing rapidly in Malaysia. In this paper, we propose analytical method to find best telecommunication provider by visualizing their performance among telecommunication service providers in Malaysia, i.e. TM Berhad, Celcom, Maxis, U-Mobile, etc. This paperuses data mining technique to evaluate the performanceof telecommunication service providers using their customers feedback from Twitter Inc. It demonstrates on how the system could process and then interpret the big data into a simple graph or visualization format. In addition, build a computerized tool and recommend data analytic model based on the collected result. From prepping the data for pre-processing until conducting analysis, this project is focusing on the process of data science itself where Cross Industry Standard Process for Data Mining (CRISP-DM) methodology will be used as a reference. The analysis was developed by using R language and R Studio packages. From the result, it shows that Telco 4 is the best as it received highest positive scores from the tweet data. In contrast, Telco 3 should improve their performance as having less positive feedback from their customers via tweet data. This project bring insights of how the telecommunication industries can analyze tweet data from their customers. Malaysia telecommunication industry will get the benefit by improving their customer satisfaction and business growth. Besides, it will give the awareness to the telecommunication user of updated review from other users.


2021 ◽  
Vol 28 (2) ◽  
pp. 621-640
Author(s):  
Isa Abdur-Razaq Sarumi ◽  
Abdulraheem Abdulwahid Yusuph ◽  
Mu’az Yusuf Ahmed

Telecommunication service providers are known to provide various benefits for airtime packages. Different packages have been introduced in order to satisfy consumer needs. The nexus between service providers and consumers are guided by terms and conditions. Under Islamic law, any condition stipulated by the parties, which involves riba is rejected ab inito and renders the transaction voidable. Therefore, this article seeks to examine the Airtime Credit Service by service providers such as extra time package known as ‘borrow me credit’ in order to determine whether it is a Shariah-compliant transaction or otherwise. The study adopts doctrinal legal research by using primary and secondary sources of Islamic law such as Qur’an, Sunnah. The study also relies on textbook, journals, and service providers’ websites. The study reveals that the use of the word ‘borrow’ in the package has triggered polemical discourse among the Islamic financial jurists. The study reveals that, although the word ‘borrow’ is used, the intention of service providers is to sell the airtime on credit sale. The article clarifies the juristic discourse of the sale based on Islamic law of contract. It  recommends some clarifications on the form and structure of the sale and concludes that it is allowed for Muslims to buy airtime through the package.


Author(s):  
Sharol Mkhomazi

The deployment of telecommunication infrastructures is a challenge in many parts of South Africa particularly in the rural areas. The challenge has impact of communities' members as they do not have network coverage for Internet in some areas. The challenge gets worse with individual telecommunication service provider. Hence there is technological proposal for sharing of infrastructure by the service providers. However, the sharing of infrastructure is not as easy as notion by many individuals and groups institutions included. The article presents findings from a study on how a South African telecommunication network service provider could deploy shared infrastructures in the country's rural communities. The sharing of infrastructure is described by the structure and actions of agents within the infrastructure sharing process. Structuration theory was employed as a lens in the data analysis. The key findings include insufficient distribution of infrastructure, ownership responsibility, competitiveness, infrastructure deployment cost, and signification of regulation.


2011 ◽  
Vol 2 (3) ◽  
pp. 16-29
Author(s):  
C. D. Cheng ◽  
C. C. Ko ◽  
W. J. Huang

In a normal port operation, yard cranes are used to move containers from one location to another for import, export or relocation purposes. In order to locate the positions of containers, a database is set up in the office server to store the current locations of existing containers within the yard. Whenever the Rubber Tyred Gantry (RTG) crane operator moves a container around, the database has to be updated via a program installed in the Vehicle Mounted Terminal (VMT) fitted to the crane. This requires the establishment of a communication channel between the server and the crane VMT. The current practice is to make use of wireless networks, even though these are susceptible to attenuation and interferences in rugged surroundings as in a port. This paper describes and explores another alternative, that of using 2G/SMS for short messages and 3G networks for real-time scenarios. These methods are more reliable as major telecommunication service providers normally expend substantial resources in infrastructure development. They also provide a cheaper alternative in terms of reducing maintenance expenses.


Author(s):  
José Amorim Reis-Filho ◽  
Francisco Barros ◽  
José De Anchieta Cintra Da Costa Nunes ◽  
Cláudio Luis Santos Sampaio ◽  
Gabriel Barros Gonçalves De Souza

The influence of the lunar phases and tidal range on the fish capture was analysed in a tidal flat in Barra do Paraguaçu (Baía de Todos os Santos). The sampling was realized in the flood tide and ebb tide of the spring (full moon) and neap (waning moon) tides, between June 2007 and May 2008. At all sampling occasions, two parallel drags were accomplished to the tidal flat, in the same direction of the current, in a 100 m long area marked on the beach beforehand, using a seine net of 15 m × 2.0 m with a mesh of 12 mm between adjacent knots. A total of 2312 fish specimens were captured (26.5 kg), belonging to 75 species from 45 families. The mean number of captured fish was significantly larger in full moon at ebb tides, while the mean weight in the captures was larger in ebb tides. There was significant difference in number of species, number of fish, richness and diversity between full and waning moons. The number of fish and biomass were significantly different between tides. Significant differences were found in community structure regarding trophic groups in relation to tide and moon, although the classic diversity indices did not capture this effect between tides. Furthermore, it was possible to identify preferences of occurrence related to the change of tide in dominant species.


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