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Mathematical modelling of Fish Resources Harvesting with Predator at Maximum ...
Mathematical modelling of Fish Resources Harvesting with Predator at Maximum ...International Journal of Integrative sciences, Innovation and Technology (IJIIT) - AGSI
Mathematical modelling of Fish Resources Harvesting with Predator at Maximum Sustainable Yield
Kinfe Hailemariam Hntsaa, Zenebe Taka Mengesha (PhD)b*
aDepartment of Mathematics, Aksum University, Axum, Ethiopia, kinfhail@gmail.com
bDepartment of Biology, Aksum University, Axum, Ethiopia, zenebeteka2007@gmail.com
In this study, the population dynamic of fish is considered following Logistic model with the inclusion of harvesting. The prey-predator interaction is also considered with an assumption that the predator population which is completely theoretical and not physically defined has a little effect on the growth of prey population provided that there are no limiting factors other than the predators. This is to say that the prey-predator cycle remains stable as far as other factors are constant in the natural environment. The growth function of the predator population is constructed corresponding to the prey population, and its results showed that the predator population size is either convergent to a finite positive limit, zero or diverges to positive infinity; while the fish population size follows Logistic function and grows to an upper asymptote. Furthermore, the prey-predator interaction is considered with the assumption that the predator population has an effect on the growth of the prey population and the predator population has intra-specific competition for a limited environmental resource. Its result showed that the predator population size did not go to infinity without bound. In both cases the maximum sustainable yield is obtained, numerical simulation and stability analysis of the model are included.
Telithromycin 191114-48-4-api
PRODUCT CODE: SDPAPI1961 PRODUCT NAME: Telithromycin CAS NO: 191114-48-4 USES: anti-inflammatory MOLECULAR WEIGHT: 812 MOLECULAR FORMULA: C43H65N5O10 CHEMICAL NAME: (1S,2R,5R,7R,8R,9S,11R,13R,14R)-8-[(2S,3R,4S,6R)-4-dimethylamino-3-hydroxy-6-methyl-oxan-2-yl]oxy-2-ethyl-9-methoxy-1,5,7,9,11,13-hexamethyl-15-[4-(4-pyridin-3-ylimidazol-1-yl)butyl]-3,17-dioxa-15-azabicyclo[12.3.0]heptadecane-4,6,12,16-tetrone Packing: 1KG,5KG,10KG,20KG Contact us on Email sales@swapnroopdrugs.com Whatsapp Mobile No: .+91-7387999183 Skype: dulalmohato Website: www.apisupplier.com
Possehl Totaaloplossing
Possehl heeft als gespecialiseerde aannemer ruim 25 jaar internationale ervaring met het onderhouden en repareren van start- en landingsbanen, verkeerswegen en beton in burger- & utiliteitsbouw en GWW.
Dagelijks staan we met veel plezier onze klanten bij in het oplossen van technische vraagstukken.
We gaan ver voor onze klanten en hechten veel waarde aan een duurzame relatie. Zonder overdrijven mogen we ons na meer dan een kwart eeuw ervaring "experts in toplagen" noemen.
Oxandrolone 53-39-4-api
PRODUCT CODE: SDPAPI1628 PRODUCT NAME: Oxandrolone CAS NO: 53-39-4 USES: Anti-inflammatory MOLECULAR WEIGHT: 306.44 MOLECULAR FORMULA: C19H30O3 CHEMICAL NAME: 17β-hydroxy-17α-methyl-2-oxa-5α-androstan-3-one Packing: 1KG,5KG,10KG,20KG Contact us on Email sales@swapnroopdrugs.com Whatsapp Mobile No: .+91-7387999183 Skype: dulalmohato Website: www.apisupplier.com
Recommended
Mathematical modelling of Fish Resources Harvesting with Predator at Maximum ...
Mathematical modelling of Fish Resources Harvesting with Predator at Maximum ...International Journal of Integrative sciences, Innovation and Technology (IJIIT) - AGSI
Mathematical modelling of Fish Resources Harvesting with Predator at Maximum Sustainable Yield
Kinfe Hailemariam Hntsaa, Zenebe Taka Mengesha (PhD)b*
aDepartment of Mathematics, Aksum University, Axum, Ethiopia, kinfhail@gmail.com
bDepartment of Biology, Aksum University, Axum, Ethiopia, zenebeteka2007@gmail.com
In this study, the population dynamic of fish is considered following Logistic model with the inclusion of harvesting. The prey-predator interaction is also considered with an assumption that the predator population which is completely theoretical and not physically defined has a little effect on the growth of prey population provided that there are no limiting factors other than the predators. This is to say that the prey-predator cycle remains stable as far as other factors are constant in the natural environment. The growth function of the predator population is constructed corresponding to the prey population, and its results showed that the predator population size is either convergent to a finite positive limit, zero or diverges to positive infinity; while the fish population size follows Logistic function and grows to an upper asymptote. Furthermore, the prey-predator interaction is considered with the assumption that the predator population has an effect on the growth of the prey population and the predator population has intra-specific competition for a limited environmental resource. Its result showed that the predator population size did not go to infinity without bound. In both cases the maximum sustainable yield is obtained, numerical simulation and stability analysis of the model are included.
Telithromycin 191114-48-4-api
PRODUCT CODE: SDPAPI1961 PRODUCT NAME: Telithromycin CAS NO: 191114-48-4 USES: anti-inflammatory MOLECULAR WEIGHT: 812 MOLECULAR FORMULA: C43H65N5O10 CHEMICAL NAME: (1S,2R,5R,7R,8R,9S,11R,13R,14R)-8-[(2S,3R,4S,6R)-4-dimethylamino-3-hydroxy-6-methyl-oxan-2-yl]oxy-2-ethyl-9-methoxy-1,5,7,9,11,13-hexamethyl-15-[4-(4-pyridin-3-ylimidazol-1-yl)butyl]-3,17-dioxa-15-azabicyclo[12.3.0]heptadecane-4,6,12,16-tetrone Packing: 1KG,5KG,10KG,20KG Contact us on Email sales@swapnroopdrugs.com Whatsapp Mobile No: .+91-7387999183 Skype: dulalmohato Website: www.apisupplier.com
Possehl Totaaloplossing
Possehl heeft als gespecialiseerde aannemer ruim 25 jaar internationale ervaring met het onderhouden en repareren van start- en landingsbanen, verkeerswegen en beton in burger- & utiliteitsbouw en GWW.
Dagelijks staan we met veel plezier onze klanten bij in het oplossen van technische vraagstukken.
We gaan ver voor onze klanten en hechten veel waarde aan een duurzame relatie. Zonder overdrijven mogen we ons na meer dan een kwart eeuw ervaring "experts in toplagen" noemen.
Oxandrolone 53-39-4-api
PRODUCT CODE: SDPAPI1628 PRODUCT NAME: Oxandrolone CAS NO: 53-39-4 USES: Anti-inflammatory MOLECULAR WEIGHT: 306.44 MOLECULAR FORMULA: C19H30O3 CHEMICAL NAME: 17β-hydroxy-17α-methyl-2-oxa-5α-androstan-3-one Packing: 1KG,5KG,10KG,20KG Contact us on Email sales@swapnroopdrugs.com Whatsapp Mobile No: .+91-7387999183 Skype: dulalmohato Website: www.apisupplier.com
ross_2008_resume 2015
The document provides a resume and portfolio for Ross Pulsford, a photographer and creative director with over 20 years of experience in photography, film, television commercials, and brand development who is seeking new work opportunities that allow travel and working with leading creative teams on large projects. Pulsford has expertise in photography, creative direction, film directing, event production, and software skills. Examples are provided of Pulsford's past clients and projects in print media, television commercials, exhibitions, and corporate branding that achieved successful outcomes.
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The document discusses how customer experience ratings impact businesses. It finds that annual spending increases 2.4x for customers rating their experience a 10 compared to a 1-3. Those rating experiences 1-6 have memberships of 1-4 years on average while those rating a 9 or 10 have memberships of 6-7 years on average. Retention rates are 42% for a rating of 1 and 70% for a rating of 9 or 10. Poor customer experience costs businesses an average of $83 billion annually in the US.
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- Linda Leigh Rodgers seeks an administrative position with over 10 years of experience in accounts payable, accounts receivable, payroll, budget management, and project coordination for construction and grant management organizations.
- She has managed over $40 million in state and federal grants with experience ensuring audit compliance.
- Her skills include full-cycle accounts payable and receivable, contract management, budgeting, project cost accounting, and experience with accounting software and Microsoft Office.
Laser Therapy, an Emerging Clinical Paradigm
Laser therapy emerged in the early 20th century and has since grown as a clinical paradigm. Key developments include Finsen using ultraviolet light to treat diseases in 1882, Einstein proposing the theory of lasers in 1916, and Maiman creating the first working laser in 1960. Laser therapy was used widely in Eastern Europe and Asia from the 1970s onward to treat pain, accelerate healing, and reduce inflammation through photobiostimulation. Higher power lasers above 5 watts became more commonly used and effective in the late 20th century. Laser therapy aims to stimulate cells to enhance healing through absorption of infrared light wavelengths.
El pallasso que no volia fer
A circus clown was tired of always having to make others laugh while he was feeling sad. He tried taking on roles like lion tamer and trapeze artist to avoid clowning, but his attempts at these roles only ended up making the audience laugh more at his mistakes and accidents. He finally realized that what he did best was being a clown to make others laugh, even when he himself was not feeling happy.
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ross_2008_resume 2015
The document provides a resume and portfolio for Ross Pulsford, a photographer and creative director with over 20 years of experience in photography, film, television commercials, and brand development who is seeking new work opportunities that allow travel and working with leading creative teams on large projects. Pulsford has expertise in photography, creative direction, film directing, event production, and software skills. Examples are provided of Pulsford's past clients and projects in print media, television commercials, exhibitions, and corporate branding that achieved successful outcomes.
NATURE OF HUMAN RESOURCE MANGEMENT
HRM has several key features: it is a part of management that relies on human resource principles and techniques; it is universal and needed at all levels of an organization; and it is people-oriented and focuses on motivating and rewarding employees to improve productivity. Additionally, HRM is action-oriented through practical approaches, goal-oriented to maximize efficiency, integrated to coordinate employee efforts, developmental to improve employee skills, continuous as it requires ongoing efforts, and comprehensive by applying to all parts of an organization.
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PRODUCT CODE: SDPAPI1879 PRODUCT NAME: Sergliflozin etabonate CAS NO: 408504-26-7 USES: anti-diabetic MOLECULAR WEIGHT: 448.46 MOLECULAR FORMULA: C23H28O9 CHEMICAL NAME: 2-(4-methoxybenzyl)phenyl 6-O-(ethoxycarbonyl)-β-D-glucopyranoside Packing: 1KG,5KG,10KG,20KG Contact us on Email sales@swapnroopdrugs.com Whatsapp Mobile No: .+91-7387999183 Skype: dulalmohato Website: www.apisupplier.com
fitter machinist
Sreenivasa Rao Namburee is an experienced machinist and operator seeking new employment opportunities. He has over 15 years of experience in machining and manufacturing roles. Namburee has qualifications including a Certificate IV in Technical Skills and various heavy machinery licenses. His work history includes roles at IAS Group Jet Cut, S&G Precision Tools & Plastics, and Submersible Motor Engineering, where he performed tasks like CNC programming, tool and die manufacturing, and machine operation and maintenance. Namburee has skills in AutoCAD, MasterCAM, safe work practices, and effective teamwork and communication. He provides strong referees from his time at various previous employers.
Exceptional customer experience value
The document discusses how customer experience ratings impact businesses. It finds that annual spending increases 2.4x for customers rating their experience a 10 compared to a 1-3. Those rating experiences 1-6 have memberships of 1-4 years on average while those rating a 9 or 10 have memberships of 6-7 years on average. Retention rates are 42% for a rating of 1 and 70% for a rating of 9 or 10. Poor customer experience costs businesses an average of $83 billion annually in the US.
Fungsi Bimbingan Konseling
Dokumen menjelaskan delapan fungsi bimbingan dan konseling, yaitu pemahaman, pencegahan, perbaikan, pemeliharaan, pengembangan, penyaluran, penyesuaian, dan adaptasi. Nana Sukmadinata menyatakan empat fungsi utama bimbingan dan konseling adalah pemahaman individu, pencegahan dan pengembangan, penyesuaian diri, dan pemecahan masalah.
Resume 62015
- Linda Leigh Rodgers seeks an administrative position with over 10 years of experience in accounts payable, accounts receivable, payroll, budget management, and project coordination for construction and grant management organizations.
- She has managed over $40 million in state and federal grants with experience ensuring audit compliance.
- Her skills include full-cycle accounts payable and receivable, contract management, budgeting, project cost accounting, and experience with accounting software and Microsoft Office.
Laser Therapy, an Emerging Clinical Paradigm
Laser therapy emerged in the early 20th century and has since grown as a clinical paradigm. Key developments include Finsen using ultraviolet light to treat diseases in 1882, Einstein proposing the theory of lasers in 1916, and Maiman creating the first working laser in 1960. Laser therapy was used widely in Eastern Europe and Asia from the 1970s onward to treat pain, accelerate healing, and reduce inflammation through photobiostimulation. Higher power lasers above 5 watts became more commonly used and effective in the late 20th century. Laser therapy aims to stimulate cells to enhance healing through absorption of infrared light wavelengths.
El pallasso que no volia fer
A circus clown was tired of always having to make others laugh while he was feeling sad. He tried taking on roles like lion tamer and trapeze artist to avoid clowning, but his attempts at these roles only ended up making the audience laugh more at his mistakes and accidents. He finally realized that what he did best was being a clown to make others laugh, even when he himself was not feeling happy.