http://ijaems.com/ Open Access international Journal to publish research paper en-us October 2018 This paper examines the effect of bookkeeping on the survival of Very Small businesses in the Kumba municipality. A sample of 150 respondents was selected through stratified and random sampling. Data was collected mainly through questionnaire. Descriptive (percentages) and inferential (the Chi square) statistical tools were used for the analysis and testing of hypotheses. The findings revealed that most very small businesses in the Kumba Municipality have an account clerk and record their transactions manually following the single entry system. The major bookkeeping challenge they face is the lack of time, as such many of them maintain only the sales book. The study also revealed that when adequately kept, bookkeeping significantly influences the survival of very small businesses in the Kumba municipality as it enables them to trace their problems and to provide appropriate solutions. It was recommended that very small business owners should acquire further training in bookkeeping or employ qualified bookkeepers to assist them in their tasks. http://ijaems.com/detail/the-role-of-bookkeeping-on-the-survival-of-very-small-businesses-in-the-kumba-municipality/ Negou Ernest http://ijaems.com/upload_images/issue_files/1-IJAEMS-SEP-2018-8-TheRoleofBookkeeping.pdf This project is developed in a cleaning company, which we will call "Clean Express" to maintain the anonymity of the same, said company is located Boca del Rio, Veracruz, Mexico. According to Gido in 2012, the case study company has a functional type structure because the departments group the areas. http://ijaems.com/detail/impact-of-procedure-manual-in-a-cleaning-company/ Kenia Valeria Gamboa Hernández, Patricia Lyssett Bellato Gil, Verónica Flores Sánchez, Daniel Martínez Navarrete http://ijaems.com/upload_images/issue_files/2-IJAEMS-SEP-2018-9-ImpactofProcedure.pdf Integral well-being is vital for the optimal functioning of people. The requirements for a software developer in the performance of their professional activity are varied and complex. These requirements range from working in multidisciplinary and multilingual teams, going through the challenge of technological advances of the discipline to commit to quality and innovation. To face these demands, it is essential that the developers have an optimal functioning, where the experience emotional and satisfaction with life play an important role. The objective of this article is to analyze the subjective well-being of university software developers in Puebla. The research is a quantitative cross-correlation study to identify statistically significant relationships between the different welfare variables. The study involved 47 university software developers from the city of Puebla. We use Pearson's multivariate correlation to validate the instruments and find relationships between variables, and Chi-squared statistics to calculate the dependency between them. The results reveal that the university software developers experience with higher incidence and intensity, the positive affections over the negatives. The affective balance (Net Affect), calculated as the difference of the weighted averages by duration between positive affective states and negative, was positive (mean = 1.31). "Concentrated" is the positive affective state with the highest incidence and with the highest reported intensity. "Tired" is the most experienced negative affect and highest in intensity. Developers spend 40% of their time experiencing negative affective states (U-index) and are moderately satisfied with their lives in general. http://ijaems.com/detail/situational-analysis-of-the-subjective-well-being-of-university-software-developers-in-puebla/ María del Carmen Cano-Alvarado, Marco Tulio Cerón López, Juan Carlos Pérez García, Haydee Margarita Hernández Ruiz, Manuel González-Pérez http://ijaems.com/upload_images/issue_files/3-IJAEMS-OCT-2018-1-Situationalanalysis.pdf One of the intrinsic factors that affects the growth of two phytoplankton species is called the inter-competition coefficient. When this parameter value is decreased, the first phytoplankton specie benefit from biodiversity gain whereas the second phytoplankton specie is vulnerable to biodiversity loss. In contrast, when the same parameter value is increased from the value of 0.0525 to 0.099 the first phytoplankton specie dominantly suffers from a biodiversity loss whereas the second phytoplankton specie benefits from a biodiversity gain. The novel results that we have obtained have not been seen elsewhere but compliments our current contribution to knowledge in this challenging interdisciplinary research; these full results are presented and discussed quantitatively. http://ijaems.com/detail/modelling-the-increasing-differential-effects-of-the-first-inter-competition-coefficient-on-the-biodiversity-value-competition-between-two-phytoplankton-species/ P. Y. Igwe, J. U. Atsu, E.N. Ekaka-a, A.O. Nwaoburu http://ijaems.com/upload_images/issue_files/4-IJAEMS-JUL-2018-11-Modellingthe.pdf In a rural context primary school where a pilot program of full-time schools was promoted and taking into account the component of the new curricular autonomy model 2017. A design and automation workshop was implemented using CATIA software, with the aim of demonstrating that primary students can overcome deficiencies in mathematical skills such as dyscalculia. The workshop was conducted with ten students between six and twelve years’ old who, due to their rural context, have little contact with technology. For the realization of this workshop, a survey was carried out for the parents and for the children where the full acceptance of the workshop was manifested. In the same way, the participation of the Technological University of Puebla (UTP) was carried out through mechatronic engineering, which was in charge of teaching the workshop, through the management according to the new educational model. The CATIA software visibly favored students' mathematical skills when designing a march, in addition to reducing school absenteeism and generating a product (wooden tractor) that has more significant benefits than the famous Japanese toy. The evaluation of the project was registered in rubrics in a span of three phases. The end of the whole process we concluded that, due to its low cost, it is possible to implement this workshop in all federal and state primaries regardless of their context and also that any child can operate the calculation using CATIA. With this last observation, we demonstrate that dyscalculia is a myth. http://ijaems.com/detail/analysis-of-the-dyscalculia-with-the-implementation-of-a-design-workshop-in-catia-in-a-primary-school-in-puebla/ Marco Antonio Betanzo del Angel, Alberto David Murrieta Aburto, Francisco Natanael Murrieta Aburto, Manuel González Pérez http://ijaems.com/upload_images/issue_files/5-IJAEMS-OCT-2018-5-Analysisofthe.pdf More often than not, welded joints experience failure such as fracture which jeopardize their reliability and ergonomics when put in perspective. Attempting a significant improvement in the mechanical properties of welded joint through heat treatment could ensure joints stability and reduce the costs associated with constant repairs and replacements. In this study, the effects of heat treatments (austempering and normalization) on the mechanical properties of weldments were examined. The locally recycled steel sample was sourced from the Delta Steel Company Aladja, Delta State and the spectro-analysis was carried out on it. The test samples were machined as per properties for tests, fractured locally and were welded using shielded metal arc welding (SMAW) with stainless steel electrode. They were then heat treated in electric furnaces. The mechanical properties (tensile strength, yield strength, hardness and impact toughness) were determined and the microstructure examined using scanning electron microscope. They were also examined physically using hand lens. The result indicated that the austempered samples improved significantly in terms of its tensile strength, yield strength, hardness and ductility. It was also found that the untreated sample produced the greatest impact toughness. The result of the physical examination also suggested that heat treatment using oil based quenchant have the potential to inhibit rust at weld joints. http://ijaems.com/detail/comparison-of-mechanical-properties-of-austempered-normalized-and-as-weld-carbon-steel-weldment/ Nwite Chukwuemeka Davison, Okoro Austine, Aminu Onimisi Ibrahim http://ijaems.com/upload_images/issue_files/6-IJAEMS-OCT-2018-4-Comparisonof.pdf