Factors Affecting Organogenesis in Plant Tissue Culture

Factors Affecting Organogenesis in Plant Tissue Culture Organogenesis is the process of forming a specific organ from non-specific mass of meristem or parenchyma cell known as callus. In this experiment, auxin and cytokinin are used to determine the effect of PGR, auxin and cytokinin on the organogenesis in carrots and petunia leaves, in which auxin hormones responsible for growth of roots, phototropism and gravitropism, while, cytokinin helps in inducing the growth of shoots and regulates auxin action. Theoretically, the presence of high cytokinin and low auxin in the media, the shoots will form, meanwhile, in low level of cytokinin and high level of auxin in the media, roots will form. Meanwhile, in the presence of high concentration of both cytokinin and auxin, callus formation will be induced. However, in this experiment, production of the shoots and roots are not compatible with the theory due to improper ratio of auxin and cytokinin and the high toxicity of synthetic cytokinin, kinetin. Introduction Plant tissue culture (PTC) is the techniques used to grow plant from any of the plant segment, tissues or cell in a contaminated free environment media such as MS media (Singh Kumar, 2009). PTC techniques is important plant biotechnology aspect in which it facilitates the production of genetically modified plants and induced rapid multiplication of difficult-to-propagate plant species. Besides that, the ability to produce totipotent plant cell using PTC techniques has significant impact on crop improvement via genetic engineering (Radzan, 2003). There are two different processes, which involve explant differentiation and growth in PTC, which are organogenesis growth and adventititous roots or shoots growth directly from the explants. Organogenesis is the process of forming a specific organ from non-specific mass of meristem or parenchyma cell known as callus. Meanwhile, for formation of adventitious roots or shoots means the roots or shoots structure arise from the explants that have been excised (Pernisova et al., 2009). This situation does not usually happen if the plant sample are cultured in a medium with the same ratio of auxin and cytokinin. The presence of plant growth regulators (PGR) such as auxin, cytokinin, gibberellins, abscisic acid and ethylene has significant impact in the process of plant growth and differentiation. Gibberellins responsible for growth, seed germination and promote fruits growth. As for ethylene helps in controlling of fruit ripening as well as controlling cell division and cell elongation. Meanwhile, abscisic acid act on seed maturation and give the ability to the seeds to response during stress in undergoing dormancy period (Davies, 2010). However, in this experiment only, auxin and cytokinin are involve, in which auxin hormones responsible for growth of roots, phototropism and gravitropism, while, cytokinin helps in inducing the growth of shoots and regulates auxin action (Davies, 2010). In this experiment, NAA will be used as synthetic auxin and kinetin and BAP as synthetic cytokinin. This experiment was conducted in order to determine the effect of PGR, auxin and cytokinin on the organogenesis in carrots and petunia leaves. Materials and methods Plant materials For petunia leaves samples, the leaves were provided by lab technician in Monash University Sunway Campus. Firstly, 18 petunia leaves were collected from the petunia leaves petri dish. Then, the petunia leaves were soaked using 10% (v/v) of sodium hypochlorite for not more than 5 minutes. The leaves were then rinsed using sterile water in a laminar flow cabinet. Then, 2 petunia leaves were added in each petri dish with different ratios of NAA:BAP and NAA:Kinetin. The same methods were implied to the carrot. However, the carrot sample was cut into 27 pieces about 0.5cm thick on the surface of sterile ceramic tile. After soaking the carrot samples in sodium hypochlorite and rinsed for three times, 3 carrot pieces was transferred into petri dish with different ratios of NAA:BAP and NAA:Kinetin. The result recorded based on table 1 and table 2. Tissue culture media MS media supplemented with combination of high cytokinin to low auxin were prepared by the lab technician as follows: NAA:Kinetin ratios (2:0, 0.5:1, 1:0.5, and 0:2) and NAA:BAP ratios (2:0, 0.5:1, 1:0.5, and 0:2). Additional of two control plate with MS media that supplemented with same ratio of auxin and cytokinin were also prepared by the lab technician. Culture condition The transferred petunia leaves and carrot pieces in the 18 petri dishes were incubated for 28days in 25ÂÂÂ ±2ÂÂÂ °C temperature, and photoperiod of 16hours in light 8hours in dark as provided in plant culturing room in Monash University Sunway Campus. In addition, for every 4 days, the tissue cultured was checked to whether there are presents of contamination and to transfer the samples into new MS plates. Results and discussion Effect on carrot slices Based on the result obtained in table 1, it shows that for carrot samples, the formation of callus can be seen all of petri dish with various ratios of either BAP:NAA or Kinetin:NAA. Theoretically, the formation of callus is due to the high concentration of both the cytokinin and auxin in a growth media (Duncan et al., 1985). Since all the plates are containing callus, it can be deduced that the growth of callus can be formed by excision of the plant cell. Meanwhile, for formation of roots, only carrot samples from MS media supplemented with BAP:NAA with ratio of 0.0:2.0 which also shows formation of roots. This is because, according to the theory, in the presence of high cytokinin and low auxin in the media, the shoots will form, meanwhile, in low level of cytokinin and high level of auxin in the media, roots will form. However, in the presence of high concentration of both cytokinin and auxin, callus formation will be induced (Chawla, 2002). However, it can be seen that there is no production of shoots in other plates except in MS media containing 0.0BAP:2.0NAA. This may occur due to unsuitable ratios of cytokinin and auxin in MS media that may not favorable for carrot species to induce formation of shoots. Effect on petunia leaves By referring to table 2, it shows that petunia leaves sample that shows formation of callus, roots and shoots is the MS media supplemented with BAP:NAA with ratio of 0.5:1.0 and the control plate. This occur due to suitable ratio of cytokinin and auxin suplemeted in the MS media. Furthermore, only MS media supplemented with BAP:NAA with ratio of 0.0:2.0 shows the growth of shoots excluding the MS media supplemented with BAP:NAA with ratio of 0.5:1.0 and the control plate. Theoretically, the productions of shoots are triggered by high concentration of cytokinin and low concentration of auxin. However, in the ratio of 0.0BAP:2.0NAA, it is predicted that formation of roots will be induced, instead, shoots are forming. This occur due to presence of zeatin in petunia leaves. Zeatin is a natural cytokinin presence in the most green leaves that undergoing senescence (Singh et al., 1992). The presence of cytokinin in the media may mask the reaction of auxin hormone on the explants presence i n the media (Nakagawa et al., 2006). Therefore, the production shoots are triggered instead of roots. Based on the result in table 2, the production of roots and shoots are low due to due to the excessive amount of alcohol used during the sterilization process. Besides that, shoots and roots only produce in MS media supplemented with BAP:NAA and not in MS plate with Kinetin:NAA. This may occur due to the toxicity of the synthetic kinetin, that are not suitable for the growth of either shoots or roots on petunia leaves. There were also presence of contamination in the cultured plate of carrot sample, which involve MS media supplemented with BAP:NAA with ratio of 2.0:0.0 and MS media supplemented with Kinetin:NAA with ratio of 2.0:0.0. Meanwhile, for petunia leaves sample, the cultured plate that have been contaminated by fungal infection are MS media supplemented with BAP:NAA with ratio of 0.0:2.0 and ratio of 2.0:0.0 as well as MS media supplemented with Kinetin:NAA with ratio of 0.0:2.0 and ratio of 0.5:1.0. This may occur due to experimental error, in which contamination may occur due to improper techniques while doing PTC such as lack of using aseptic techniques to make sure sterile condition during transferring the samples into the MS plate. Conclusion In conclusion, suitable medium supplemented with correct ratio of cytokinin and auxin are the most important key in order to get successful induction of organogenesis in vitro. Besides that, sterile environment is also one of the important factors in determining the successfulness of PTC and in order to obtain expected

Causes of Building Failures

Causes of Building Failures Building failure can be some part of building cracking occur, more seriously will bring building collapse. Building collapse will carry the risk of human injure or deaths. For example, buildings and structures all around start falling. This causes many people to get hurt, many of them fatally, because of the impact of falling material. Or, in high rise buildings, people themselves might fall from higher floor, thus, getting hurt, due to the impact of fall. Buildings with glass-facades are especially dangerous, as, glass being brittle would tend to crack with smallest deformation of the frame. And, worse, glass being very heavy has a very high impact on hitting somebody. And then, glass shards have a tendency to go inside the skin and cause damage to internal organs (Sanjay Churiwala and Naveen Gabrani n.d.). In addition, building collapse results in property damage and functionality inadequate. It also needs to spent time on clean-up, repair, cost losses and so on to get the facility up and running again. Building that causes fail may due to numerous of reasons that may not be easy predict before or during the construction. The analysis shows the general causes of building tend to failure that include unwise land-use and defective in designs which are arise at pre-construction phase and those construction and operational error which arise at during construction phase. Errors appear from pre-construction and during construction phase has the greatest potential influence on a projects final outcome. Building failure may occur due to three parties involved Consultant, Contractor and Developer/ Owner. The Consultants and Contractors had given insufficient of control and supervision of site operation and the quality control. More that, owner also is the one who are required to give cooperate and any assistance with Consultants and Contractors to completed the construction project. According to Mohammed Azad Hossain (2009), such errors ultimately lead to a situation, which may involve such failures, which are related to excavation and equipment, inappropriate sequencing, not enough temporary support; unnecessary structure weight; untimely taking away of shoring or formwork; and non-conformance to design objectives. Problem Statement and Research Question Failures have been found in various types of the buildings. Failure in buildings built any time the last 25 years, some as recently as the last couple of year (Steve 2008). A total of 225 building failure in Unites States and the result show that the building failure of low rise building constitutes about 63% of all cases, followed by multi-storey building as a distant second and this has been established by Kumalasari Wardhana and Fabian C.Hadipriono (2003). Building tend fail are depending on materials, designs, environmental conditions, method of construction and which the building is put of the use to, etc. Sultan Mizan Zainal Abidin Stadium is a new multi- purpose stadium in Kuala Terengganu, Malaysia which was constructed by South Korean construction firm. On July 3, 2009, a major part of the roof construction collapsed. The major cause such stadium collapsed has been identified are failure by design and materials used, rush development and under-supervised. Aims and Objectives The aim in this dissertation is to study and analyse the building failure and to find out the factor that causing building failure by three parties involved in construction industries. The objectives are: To study the factor that caused building failure by Contractor. To undertake the factor that caused building failure by Consultant; and To determine the factor that caused building failure by Developer/ Owner. Scope of Study The scope of study emphasizes on the building failure and factors that causing by three parties involved in Construction industries which are Consultant, Contractor and Developer/ Owner. Research Methodology Research Methodology is the way in which the research objectives can be questioned. There are two types of research strategies, which are quantitative and qualitative research. Quantitative research is highlight in the collection and analysis of data. This research based on testing of theories and to look for whether the theories are true. For the qualitative research, it approaches seek to gain insights and understand peoples awareness. The understandings, opinions, views, etc. of people are investigate which collect from survey questionnaires and document review. Primary Data Source Survey Questionnaires In this proposal, Survey Questionnaires will be used to collect all the opinions, views, etc. This method is the more accurate since as the first hand information collected from original research. The survey questionnaire form will be distributed form to 50 people who are random citizens and the purpose to investigate the major factor of building failure causing by three parties involved in construction industries. The survey questionnaire form will be set out in closed-ended question format for respondent to select the answer. That mean the closed-ended is the limit respondents answers to the survey, such as choosing either yes/no, true/false, or multiple choices. More that, the recommendation to reduce such failure in construction industries are also be conducted by survey questionnaire. Secondary Data Source The research undertakes a review of all literature which known as secondary research method that is selection of available related documents on the topic, which contain information, ideas, data and evidence written from a particular standpoint to fulfil certain aim or express certain views on the nature of the topic (Chris 2003, p.1-2). In this proposal, the information sources and obtains can be from reference book which are from Library College and National Library. Beside, information also can be obtained from article and journal that were related to cause failure of the building. Electronic sources such as internet website from Google can helped to found the information which required in this research, and etc. Dissertation Contents For this study dissertation report involved 5 chapters. The general description of each chapter as follow: Chapter 1 Introduction The first chapter is the introduction of the dissertation. The contents in this chapter include Project title, background of the research problem, problem statement and research question, aim and objectives, scope of study, research methodology of the study and dissertation contents. Chapter 2 Literature Review In this chapter two is the literature review. It will review on the selection criteria of building failure which in discussed for failure of building, factor that causes of failure by primary parties involved in construction industry. Chapter 3 Research Methodology Chapter three is includes the research methodologies and to provide the rationale for the method adopted in this dissertation project. Then methods used to research are literature review on journal, reference book, etc., survey questionnaire, and case study. Chapter 4 Research Findings Chapter four is the discussion and result analysis. The data collected and interpret from research method adopted, identify and analysis it, then present and explain the findings. The data present will in a table, chart, diagram, and essay form. Chapter 5 Conclusions and Recommendations The last chapter will be the conclusions and recommendations. The achievement of research objectives, recommendations and limitation of the research will be record in this chapter. References Tunku Abdul Rahman (TAR) College Harvard Referencing system will be using in the research. This Harvard Referencing system is a standard practice at all institution of higher learning including Tunku Abdul Rahman (TAR) College. Project Plan and Schedule The table below is the Project Plan and Schedule of the research proposal project. CHAPTER 2: LITERATURE REVIEW Basic of Building Failure in Construction Industries Definition of Building Failure Building Failure is refers to the member within structure or component or structure itself which are loss of load carrying capacity. More on the time initiated of building failure is when material stressed to its strength limit and fails to withstand the stresses imposed upon it. The failure will expose itself by crack or breaking, occur permanently deformed, becoming bending and more seriously may collapse (Wikipedia 2012). Calvert (2002) notes the buildings, like all structures, are designed to support certain loads without deforming excessively. The loads are the weights of people and objects, the weight of rain and snow and the pressure of wind and load of the building itself. With buildings of a few floors, strength generally accompanies sufficient rigidity, and the design is mainly that of a roof that will keep the weather out while spanning large open spaces. With tall buildings of many floors, the roof is a minor matter, and the support of the weight of the building itself is the main consideration. Like long bridges, tall buildings are subject to catastrophic collapse. The loads can divide into two parts which called live loads and dead load. Live loads are the weight of temporarily attached to; it can produce by like people, machinery and equipment, furniture, appliances, etc. of the building or other structure. But do not including the material that utilized in construction or environmental loads or anything permanently attached to it such as wind load, snow load, rain load, earthquake load, flood load, or dead load (N.A.N.d.). The case effects of machinery, equipment, furniture, appliances concentration, deflections or cracks must be considered and to determine the necessary proper intensity of design to considering those effects. Dead load is a fix load in a structure such as a bridge, building, or machine that is the weight from members itself, the supported structure itself, and permanent attachments equipment or accessories that apply in the building (Merriam-Webster, Incorporated 2012). The item that considered of dead load include construction material that use to build or make up the building such as beams, columns, floor systems, ceiling systems, wall systems, doors, windows, floor coverings, wall coverings, cabinets, and the like. Besides, the item considered of permanently attached equipment or accessories such as heating and ventilating systems, electrical trays, piping, etc. In the other way round that the item is not considered to dead load are the things as movable. That item like shelving, desks, chairs, beds, chests, books, copiers, stored items, or anything else that can be moved around during the life of the structure. The feature of dead load shows that they are the weight of final structure . This is creates a bit difficult for the design Engineer since in order to design the building, the Engineer must need to know the weight of the structure. Besides, the engineer also needs the accurately define the weights of the final structure. At the beginning of design process, the weight of the structural element and the framing are all unknown. So more of time to solution this kind of difficult position is the design Engineer often involves iteration where an educated guess is needed as to where design will finish, the dead loads is based on estimate, select the structure members that based on the estimated loads, dead loads is need to recomputed, then continue the cycle until all the member sizes do not change (T. Bartlett Quimby 2007). The aim of the structures are designed is to achieved the requested function of creation, ensuring the structures could be applied all of the loads, and sufficient safety of structures is obtain. In the properly designed system, it will prevent a local failure cause immediate and gradual failure of the complete building. The ultimate failure strength of a material or structural element is taken carefully consideration in the structural engineering and structural design to prevent failure (Finn 2009). As Aggeliki (2009) notes in his articles, if that are unexpected loads are applied, one of the factor of safety is needed to link into the design analysis to prevent building failure. Nowadays, building codes have improved and expressively to reduce the structural collapses, but it still cannot essential completely prevent the structural failures. Even though the structural failure is become less, but the results still are disastrous. Until now the engineers are still insistently searchi ng the method to reduce structural failures by introduce to proper building standards and other safety requirements. Lastly, reducing of human error, carrying out proper hazard identification, and using suitable maintenance procedures for the structures is the chance can be minimized of structural failure (Suvo 2009). Type of Building Failure The term of defect is defined as the premature failure of structure and the results cause from improper or substandard engineering, manufacture, design, application and installation. In another way, the term failure can described as the system breakdown or unable to function at all, breakdown in the operation, quality, or appearance of structure, component or material. Therefore those are different meaning in term of defect with the term failure. So, the following table show some of that various type of building failure (James and Ransom 2007, p.8): Failure Type Example Aesthetic failure Concrete or render cause crazing or shrinkage cracking. Flaking and peeling of paintwork. Staining and soiling of the finishes. Functional failure Caused sagging of the floors. Leaks in elements such as roofs, walls and floors Failure of materials Chemical attack of rendering or concrete, mortar or brick. Fungal are attack of the timber. Metals are corrosion. System failure of components and elements Carbonation of concrete. Leading to corrosion of reinforcement and subsequent cracking and spalling of concrete members. Structural failure Subsidence which caused downward movement of a building and caused by below ground factors such as desiccation of clay soil. Settlement which also caused downward movement and caused by overloading. Non- structural failure Cracking and deboning of plaster. Tenting, deboning and bubbling of floor coverings. Roof tiles and slates are delamination. Reversible failure Jamming of door and windows since of moisture intake by these components. Usually in winter or summer, the wood will be dry out and door and window will become unstuck. Irreversible failure Chemical reaction (sulphate attack) on mortar or rendering. Excessive distortion in beam, column or wall owing to structural movement. Primary Parties Involved in Construction Industries Definition Lawrence (2003, p.1-2) indicated that, The management of construction is an enterprise that involves many people with diverse interests, talents and backgrounds. The owner, the design professional and the contractor comprise the primary triad of parties, but others, such as subcontractors, material suppliers, and bankers, insurance and bonding companies, attorneys and public agency officials, are vital elements of the project team whose interrelated roles must be coordinated to assure a successful project. In this part will concern the duties and responsibilities of the primary parties such as the building contractor, consultants, and Developer/ Owner on the construction project. The primary focus here is on the building contractor who are to carries the lead duties and responsibility for the on-site installation work or sometimes off- site as well and all of the associated planning and follows up. At the same time, also to understand the duties and responsibility for other people an d organisations participate to success the project. Definition of Building Contractor According to Exforsys Inc. (2010), In the Construction industries, the contractor also can calls as the project engineer or project manager. The contractor is the one an individual who engages in the planning, developing and coordinating of activities in the construction project. The contractor also is the one to supervise the construction and to ensure all necessary measures must be taken in the result of completed finished product. More important is notwithstanding that possible delays due to bad weather or building causes any emergencies, contractor needs to sure that construction work finish are met the deadlines and try do the best of prevent causing any delay. The General contractor is employed by the developer/owner, and may also advice of the Architect to the developer/owner. Contractor must first assess the project-specific documents (referred to as tender documents). In during of the construction stage, contractor required to visit the site since it will help to get a better understanding of the project. He may handle the work on residential dwellings, commercial buildings or infrastructure, such as roads, bridges or schools. As the contractor, working hours are more the time is irregular, since any sudden problems that may arise at the construction site and constructor must be available at all times to resolve that problem. Besides, the contractor may need to calculate the price, as also called an estimate. Contractor required providing the approximate price with considers the cost of materials and equipment as well as the cost of labour to the owner for the project. The General Contractors Duties and Responsibilities That is many duties and Responsibilities that building contractor must be fully complete on day to day in order to ensure the construction project is completed smoothly and in a timely and correct manner. More about that, building contractor also need to ensure the project complete by price specified in the contract. Building contractor to construct the construction project must be according to the designers plans and specifications. Firstly, the duty of the building contractor is require implementing a plan and direct in which to carry out all the aspects of construction project. This is from hiring the workers to developing the contraction project and follow the step-by-step timeline that the project from start until end. In addition to implementing the construction plan, the building contractor is responsible for hiring, supervising, firing employees who are under the specific construction project with the contractor. For example, building contractor including design and worker selection or appoint as to hires specialized subcontractors to perform all or portions of the construction work, managing personnel on site, providing site surveying and engineering on site, etc. As a supervisor on construction project to supervising the employees, the building contractor must be regard to the workers and also take care of payslip. Ensure engage in hire someone to do work for the contractor. Obtaining the materials for the project also is the one of responsible for the building contractor. For instance, Contractor is the one to providing all of the labour, material, equipment (such as engineering vehicles and tools) and services necessary in the construction project. Since construction projects must be up to the contractor to acquire goods to build the structures, if not, cannot complete without the necessary building materials. Another duty of the building contractor is to applying for building permits from relevant department (local authorities). At before want start to construct the building, it must be acquire all necessary licenses and permits from relevant entities so that the building project just can begin. Since there are many regulation that the building contractor must be follow which relate to these documents which each building in order to engage in construction. The building contractor must complete the project which agrees with all laws, rules and regulations. The building contractor need to research about relevant regulations and laws that are related to the construction process. There are many laws such as different state have their different own law. Those laws will state that when, where and how a building contractor and his crew should build in certain areas. So, the building contractor must be recognized and followed in order to complete the project in a law-abiding manner. Another specific duty of the building contractor is budget issues. The building contractor may require planning all aspects of a construction project which including establish a budget for the construction project. That budget must be follow by the building contractor as closely as possible. For the example that budget will allow the building contractor to gain supplies, hire workers and finish the construction in a cost-efficient manner. That must be taken in serious matter which building contractor to following budgets and his/her should be care with or to ensure that the project will be completed as what was aspiration in the beginning of plan. From the beginning to end of the construction process, reviewing the progress and implementing any changes along the way also is another item which relate to the responsible of a building contractor. The building contractor needs to follow closely of the specific building project and necessary to make any changes when he/she deems fit to do so (Exforsys Inc. 2010). Lastly, the working hours of building contractor are irregular. Those emergencies and surprises may arise which relate to the project and it may occur on-site and sometimes off-site as well. So, as the building contractor must be assistance with an emergency issue available at all times and to resolve that problem. On the Wikipedia (2012) provided that, In the during construction phase, the building contractor is also responsible for providing temporary utilities on site like equipment, tool, formwork and etc., securing the property, control the quality assurance, managing personnel on site, providing site surveying and engineering on site, disposing of or recycling construction waste, monitoring master program (schedules) and cash flows, maintaining accurate records and etc. Besides, he/she should day-to-day go to the site and specialize and oversee of a construction site or the progress of a particular building task, such as plumbing, heating or electrical wiring. He or She also require to management of the vendors and trades. The building contractor should be done to prevent any oblation either the safety of the workers or the quality of the work. The contractor is has fully responsibility to complete and the purpose to achieving the quality level and for safety that required in the documents. The building contractor may also be involved in the training of the owners personnel in the operation of the building systems and may be provide some maintenance after construction is complete. It is important that the contractors has an obligation to get satisfy the minimum requirements of the drawings and specifications from the Architect. In the bidding process, the owner will asks for the lowest possible price to perform and that only those things are absolutely required by the drawings and specifications. Thus, the contractor is need obligated to satisfy those minimum requirements and no more. Of course, the owner is always free to require additional performance by change order. In the design / bid / build method, the owner only contract with the contractor. In the case, the contractor has no any contract with the designer. Then the contractors is required responsibility to comply any requirements of the contract with the owner. All efforts by contractor are essential to prevent the structural failure as it causes dangers to human life and property. There are the numerous of causes for a structural failure, and there is a requirement for a proper analysis of all the factors before construction (N.A, N.D). Definition of Consultants Who are the consultants? The consultants can be the design consultants, cost and contract consultants, land surveyors, etc. The design consultants usually comprises of the architect, civil and structural engineers, mechanical and electrical engineers and other specialist designers, such as interior designers, landscape architects, lighting specialists, town planners, etc. Design consultants as a designer of the project in the area he/ she is specialized in. They also as a facilitator of clients need and project brief. Besides, they as an advisor to the client on matters are relating to design and on statutory requirements and by- laws relating to the project. The cost and contract consultant can be the quantity surveyors. The quantity surveyors usually act as the cost and contract consultant for a project. The General Consultants Duties and Responsibilities In the following are shows the duties and the responsibilities of both which are design consultants and cost and contract consultant. Design Consultants Carrying out design works in their areas of specialization. Ensuring design works are properly coordinated with fellow consultants. Ensuring design complies with the requirements of the authorities, and with the by- laws. Choosing appropriate systems and materials, and making sure design for the elements of the works is kept within the cost plan. Notifying and advising the client on any necessary design changes due to unforeseen circumstances. Ensuring that design works are carried out within the time frame as set out in the programme. Conducting field observations to ensure that the contractor carries out the works as per the specifications and design. Contract documents include a budget, specifications, any general and special conditions prepared by a design professional such as an architect. Cost and Contract Consultant Responsible for study of the economics and financial implication of a construction project. Preliminary cost preparation and estimating. Cost plan preparation and cost studies. Contract documentation and administration preparation. Evaluation of contractors tenders. Cash flow forecast and post contract coat monitoring. Valuation of Variations. Preparation of periodic cost report for the client. Evaluation and settlement of contractors claim. Settlement of contractual disputes. Definition of Developer/Owner The developer/owner is the party who wishes to have a project constructed and pays for it. The developer/owner can be an individual, a business enterprise or an organization, and it can be both private and public. Developer/Owner is the key master to the construction production process. In addition, when initiate a construction project, developer/owner have a right to selecting project timing, priorities, cost limits, specific requirement, and determine the contractual methods. There are two type of developer/owner which are well informed and know nothing. Developer/Owner who are well informed mean know what they want and take decisive steps to achieve it. Another are know nothing mean the developer/owner need guidance to formulate their wishes and match them to the available budget. The General Developer/Owner Duties and Responsibilities Basically the duties and responsibilities of the developer/owner in a project can be under the following: Providing the clients brief and clarity of brief. Financing the project, i.e. they pay for the project. Ensure safety, health and environment aspects of the project are complied with in accordance with the legislation as laid down by DOSH and the Department of Environment. Make sure smooth incorporation and prevent disruption takes place. Avoidance of interruption to professional advisors job. Building Failure Caused by Primary Parties General Adel Abdulaziz Al Barrak (1993) postulates that, the construction business is the much higher level of competitors than any other business. As the result showing that, construction business has very high risks could lead to failure are exposed than any other business. Therefore, to determine cases of failure should be studied and such cases should be avoided in order to reduce that number of failure. The construction business need to more attention to treat the weak point. In the section will study the various building failure that cases by primary Parties involved in construction industries. There are three parties involved, namely, developer/ owner, consultant, and contractor. The relationship between these parties is adversarial since different parties has different goals they want to meet and each party goals that will has arisen conflict with the other parties goals. For the instances, the developer/ owner want the project be low cost to expend and result in good quality. But t his will reduce the profit that contractor gain. Besides, as the consultant, he/she wants the project is much more attractive and safe. In this circumstance, it may cause both the contractor and the developer/ owner spend more money or extra cost on the project. Except on this relation among parties, which still have more any other reason could be a major source of building failure. Building Failure Caused by Contractor More commonly factor that strong influence in the contractors failures in the project or building are lack of experience, poor labour productivity, bad management decisions, lack clearly assigning the responsibility and authority, recruiting multinationals, neglect, frauds, lack of control or supervision system, and lack of communication system. Lack of Experience That is important the building contractor must have the experience in the construction project. Contractor is the person who is daily to manage the activities process on the construction site. Besides, the building contractor also as field supervision to supervising all hiring worker on site. If the building contractor does not have experience, he may not to solve any problem arise from construction site. Dr. Sadi Assaf (2004) indicated that, the owner should try to employer a higher degree qualified working team in the company because that may able to maximize the usage of the companys resources and avoid any waste resources occur. The working team employer by owner mean should have good experience in the same line of work. As the more experienced building contractor in the project should be able to demonstrating knowledge of, propose a wide array of options, and have the experience with a variety of products, materials and techniques. Little or no experience of the building contractor is the most common cause the project or building failure. That is very difficult if the contractor resign at the halfway through the project, since the new contractor employ by the owner need to take over the work that where ex-contractor left off. For instance, the second contractor may not familiar to use the materials or techniques that first contractor have used. In addition, the second contractor may not at the same way that first contractor wishes to did, unless there are very specific drawings are provided (McCaleb Construction Inc, 2012). Poor Labour Productivity Poor labour productivity also mean as poor workmanship in construction industries. Poor workmanship is the actual that cause of construction either in defect or failure

Opposing Views of the Effectiveness of Monetary Policy Essay -- Econom

Opposing Views of the Effectiveness of Monetary Policy Monetary policy is a powerful governmental weapon which has historically proven that it is difficult to wield. This difficulty is one of the reasons why some economists doubt the effectiveness of monetary policy as a whole. These economists find that monetary policy is difficult to implement because of estimation problems and time lag problems, as well as cyclic effects. They also point out situations in which monetary policy may not work at all. On the other hand, some economists swear by monetary policy as one of the most influential economic tools. These economists show that controlling money supply in America is a relatively young idea, and is developing rapidly. They also attempt to show that money supply affects many variables in our economy, and that it is useful in more situations than the anti-monetary policy economists, Keynesian economists, would have us believe. To gauge the ineffectiveness of monetary policy some economists call our attention to the great depression. How could governmental monetarists allow one quarter of the country to be unemployed[1] or for one third of commercial banks to be put out of business by â€Å"bank panics?†[2] People who took part in these bank panics were not only taking out their â€Å"own† money, but were taking out possible loans for others (the amount they took out multiplied by the money multiplier) which eventually became 31% of the total money supply.[3] The economist best fit to use monetary policy would be able to tell the future, or at least provide a pretty good estimate. These estimates are very difficult when sometimes the results of policy actions are not seen for months to over a year. Corrections of these ... ...ed: Mishkin, F.S. The economics of Money, Banking, and Financial Markets. Sixth Edition. 2003. Schwartz, A.J. Money Supply. The Concise Encyclopedia of economics. The Library of economics and Liberty. Online: http://www.econlib.org/library/Enc/MoneySupply.html Meltzer, A.H. A Liquidity Trap? Online: http://www.gsia.cmu.edu/afs/andrew/gsia/meltzer/a_liquidity_trap.pdf Online: http://www.korpios.org/resurgent/Fed.htm What Role did the Fed Play in Causing the Great Depression? Ueda, K. Speech at Japan Society of Monetary economics. December, 2001. Online: http://www.boj.or.jp/en/press/koen072.htm#0202 Online: http://www.arts.unimelb.edu.au/amu/ucr/student/1997/Yee/depression.htm The Cause of the Great Depression in 1929. Online: http://www.shambhala.org/business/goldocean/causdep.html What Caused the Great Depression of the 1930’s?

Trapping a Mouse Essay -- Expository Process Essays

Trapping a Mouse Trapping a mouse is not as easy as one might think. Mice are very crafty and they have an uncanny ability to steal the bait from a trap without getting caught. I was shown at a very early age just how slick these mice could be. Consequently, I was also taught the proper way to trap a mouse. It is very important to use the right ingredients when trapping these pesky critters. This is very important to ensure a good clean kill. You should use the two-bait method. By using this time-tested procedure, you will have an approximate success rate of 80% to 100%. The two ingredients used for this type of trapping are peanut butter and Velveeta cheese. Why these two particular items? Have you eaten a peanut butter sandwich at some point in your life, or a piece of Velveeta cheese? If you have, you know how sticky and chewy they both are. These two facts are what make them the prime ingredients for luring and trapping mice. I have tried other methods over the years, but the rodent has always managed to cheat the jaws of death. He would snatch the bait and run before the trap even went off. After many futile attempts with the other ways of trapping, I'd always revert to that time proven method. My grandfather was the one who devised this two-bait method. As a child I lived in a two-family home. My family and I lived on the first floor, along with my grandparents who lived on the second. I spent a lot of time with my grandfather. You may be wondering why this whole mouse trapping endeavor came to be. Let me tell you, growing up in an Italian household there was always plenty of food around, especially bread and cheese along with fruit and nuts that were lef... ...stairs to see if it worked. As I opened the door to the apartment, there sitting at the table in all his glory was my grandfather. He was wearing an ear to ear grin that could have lit up the darkest of nights. He motioned for me to come over to him. As I got closer to him, he said, "go look behind the icebox." I walked over to it and with nervous anticipation I peeked behind. Lo and behold, there he was, the mouse that had caused so much turmoil for my grandfather, now dead, caught by a persistent old man of many ideas. Thus started the two-bait method for trapping a mouse. You must use peanut butter and Velveeta cheese. But not too much of either because you want the mouse to have to stand on the trap in order to get at the bait. Then, locate the site of those rude little mouse droppings! Once you've found that, you are ready to "Trap a Mouse!" Trapping a Mouse Essay -- Expository Process Essays Trapping a Mouse Trapping a mouse is not as easy as one might think. Mice are very crafty and they have an uncanny ability to steal the bait from a trap without getting caught. I was shown at a very early age just how slick these mice could be. Consequently, I was also taught the proper way to trap a mouse. It is very important to use the right ingredients when trapping these pesky critters. This is very important to ensure a good clean kill. You should use the two-bait method. By using this time-tested procedure, you will have an approximate success rate of 80% to 100%. The two ingredients used for this type of trapping are peanut butter and Velveeta cheese. Why these two particular items? Have you eaten a peanut butter sandwich at some point in your life, or a piece of Velveeta cheese? If you have, you know how sticky and chewy they both are. These two facts are what make them the prime ingredients for luring and trapping mice. I have tried other methods over the years, but the rodent has always managed to cheat the jaws of death. He would snatch the bait and run before the trap even went off. After many futile attempts with the other ways of trapping, I'd always revert to that time proven method. My grandfather was the one who devised this two-bait method. As a child I lived in a two-family home. My family and I lived on the first floor, along with my grandparents who lived on the second. I spent a lot of time with my grandfather. You may be wondering why this whole mouse trapping endeavor came to be. Let me tell you, growing up in an Italian household there was always plenty of food around, especially bread and cheese along with fruit and nuts that were lef... ...stairs to see if it worked. As I opened the door to the apartment, there sitting at the table in all his glory was my grandfather. He was wearing an ear to ear grin that could have lit up the darkest of nights. He motioned for me to come over to him. As I got closer to him, he said, "go look behind the icebox." I walked over to it and with nervous anticipation I peeked behind. Lo and behold, there he was, the mouse that had caused so much turmoil for my grandfather, now dead, caught by a persistent old man of many ideas. Thus started the two-bait method for trapping a mouse. You must use peanut butter and Velveeta cheese. But not too much of either because you want the mouse to have to stand on the trap in order to get at the bait. Then, locate the site of those rude little mouse droppings! Once you've found that, you are ready to "Trap a Mouse!"

Alfred Nobel Essay example -- essays research papers

Alfred Nobel Alfred Nobel was born in Stockholm, Sweden on October 21, 1833.(Encarta) His father Immanuel Nobel was an engineer and inventor who built bridges and buildings in Stockholm. In connection with his construction work Immanuel Nobel also experimented with different techniques of blasting rock. Alfred's mother, Andrietta Ahlsell came from a wealthy family. Due to misfortunes in the construction work caused by the loss of some barges of building material, Immanuel Nobel was forced into bankruptcy the same year Alfred Nobel was born. In 1837, Immanuel Nobel left Stockholm and his family to start a new career in Finland and in Russia. To support the family, Andrietta Nobel started a grocery store which provided a modest income. Meanwhile Immanuel Nobel was successful in his new enterprise in St. Petersburg, Russia. He started a mechanical workshop which provided equipment for the Russian army and he also convinced the Tsar and his generals that naval mines could be used to block enemy naval ships from threatening the city. The naval mines designed by Immanuel Nobel were simple devices consisting of submerged wooden casks filled with gun powder. Anchored below the surface of the Gulf of Finland they effectively deterred the British Royal Navy from moving into firing range of St. Petersburg during the Crimean war (1853-1856). Immanuel Nobel was also a pioneer in arms manufacture and in designing steam engines. Successful in his industrial and business ventures, Immanuel Nobel was able, in 1842, to bring his family to St. Petersburg. There, his sons were given a first class education by private teachers. The training included natural sciences, languages and literature. By the age of 17, Alfred Nobel was fluent in Swedish, Russian, French, English and German. His primary interests were in English literature and poetry as well as in chemistry and physics. Alfred's father, who wanted his sons to join his enterprise as engineers, disliked Alfred's interest in poetry and found his son rather introverted. In order to widen Alfred's horizons his father sent him abroad for further training in chemical engineering. During a two year period, Alfred Nobel visited Sweden, Germany, France and the United States.(Schuck p. 113) In Paris, the city he came to like best, he worked in the private laboratory of Professor T.J. Pelouze, a famous chemist. There he met the y... ...e Bjà ¶rkborn Manor became his Swedish home. Alfred Nobel died in San Remo, Italy, on December 10, 1896. When his will was opened it came as a surprise that his fortune was to be used for Prizes in Physics, Chemistry, Physiology or Medicine, Literature and Peace. The executors of his will were two young engineers, Ragnar Sohlman and Rudolf Lilljequist. They set about forming the Nobel Foundation as an organization to take care of the financial assets left by Nobel for this purpose and to coordinate the work of the Prize-Awarding Institutions. This was not without its difficulties since the will was contested by relatives and questioned by authorities in various countries. But as we all know, the legacy of Alfred Nobel lives on today. The prizes named after him are still the most coveted prizes for the recipients in their respective fields. Everyone will remember Alfred Nobel as a daring pioneer who knew no limits. Many of the new advanced scientific discoveries made in the last century were surely helped out by the work of Nobel. His Nobel prizes reward people of science and enable them to keep churning out new ways of accomplishing new feats that have never been attempted before

Negative Impacts

Industry production systems are unsustainable which can also have negative Impacts on environments. In response, there has been a rapid growth aimed at getting industry to â€Å"clean up its act†, because enforcement of the environment is growing up only slowly. In addition, the environmental and social performance of enterprises has Increasingly been used as a factor In deciding whether to do business with them, and this means that environmental demands are being made on enterprises.The methodology to be adopted will basically be with relevant, recognizing that they must adapt to the environmental demands made of heir products or of their manufacturing procedures, and to do this they need companies that can offer specialized services relating to the development of various management systems and products.The response to the problems outlined Lies In enabling output to continue to grow while minimizing growth in inputs of materials and energy, and they can support the establish ment of institutions meeting the standards in monitoring the development of environment related In affecting trade, identify gaps In normative laws and regulations and other policies which promote of Industry especially In the support yester by promoting the establishment of specialized enterprises in the 1 org knowledge and skills in enterprises to public-private partnerships in the environment field.Agile Noreen A. Bossily 2012103039 2 The view to the above mentioned, focuses on the paths to industrial development; efficient use of non-energy raw materials and of recycled industrial and non-industrial wastes; adoption of relevant products and technologies to meet environmental standards; adoption of environmental and related management systems with a view to entry into global value chains; and creation of businesses that an offer services. This concludes some challenges faced by some industries to properly utilize resources, which somehow gives opportunities. 4 Introduction ? Tabl e of Contents Definition of Industrial Development 2 Table of Contents 5 Main Body How Industrial Development Through the Years Affect How Industrial Development Made Life Easier Conclusion 11 References ? 12 4 Introduction The unsustainable patterns of industrial development may not have been appreciated until quite recently, it has been recognized since the start of the industrial revolution that enterprises can have obvious and visible impacts on their local communities and environments.As a response to these manifest health and environmental impacts, the last 40 years have seen an unparalleled growth in environmental matter. There has been a growing determination by different stakeholders in the developed countries to use the environmental and social performance of enterprises as a factor in deciding whether to do business with them. The first to feel this pressure are often the transitional corporations and other large companies, but they in turn are exerting a similar pressure on their suppliers. As a result of the globalization of trade, many of these are now located in developing countries.This paper explores in more detail these challenges and opportunities on how can enterprises in these countries become greener and shrink their environmental footprint, while at the same time continuing to grow and deliver goods, services and Jobs to their populations? What were the advantages and disadvantages of industrialization? Answers to these questions must take into account one overriding imperative: that industries need to grow. Industrial development is the only mechanism that will enable developing countries to reduce he level of poverty and hardship they face.This conclusion offers a strategy for the development aid community, which is designed to help developing countries bridge the gap between the present and the future. 6 Industrial development any development of an industrial nature. The industrial revolution led to the development of factories for la rge-scale production, with consequent changes in society. Originally the factories were steam-powered, but later transitioned to electricity once an electrical grid was developed. The mechanized assembly line was introduced to assemble arts in a repeatable fashion, with individual workers performing specific steps during the process.This led to significant increases in efficiency, lowering the cost of the end process. Later automation was increasingly used to replace human operators. This process has accelerated with the development of the computer and the robot. 7 How Economic Development Through the Years Affect the Environment The economic development through the years affected the environment by the increase in population, industrialization started, and the shortage of nonrenewable energy sources. The increase in population means that ore forest and rain forest will be destroyed to make more room for the people to live.Destroying rain forests are bad because forest alone produce s 40% of the world's oxygen. There are now a lot of industries around the world but even though there are so many, it is a big burden to the environment. The burning of gasoline and coal produces carbon dioxide that, over time, has settled in a layer in the earth's upper atmosphere. This creates a situation know as greenhouse effect. The greenhouse effect is a situation in which an excess of carbon dioxide in the earth's upper atmosphere lets the sun's rays through but traps heat close to the earth's surface. Nonrenewable energy resources might run out.This might occur because of the increase and demand in oil which is the basic necessity we all use. We use oil for multiple proposes. Since industries use oil and coal a lot it will eventually pollute everything and will cause acid rain which pollutes the stream. These were some examples of how economic development can led to disasters for the environment. There might be a smudge of a change that this will not happen, but, it is guara nteed that those things would happen. Especially that global warming is already taking place. 8 How Industrial Development Made Life Easier?It would Just be unbearable to think that life would be better without the Industrial Revolution. All the inventions that were invented back then are used all the time. The inventions have greatly changed society. The light bulb was made to create light that would last for a long time and that could be used anywhere. In today's society, people just makes it easier to see anywhere whenever it's the daytime or night time. â€Å"Edition's eventual achievement was inventing not Just an incandescent electric light, but also an electric lighting system that contained all the elements necessary to make the incandescent light practical, safe, and economical. Before it was created, human beings had to use fire and now you're able to Just turn the light switch on and you automatically have whatever lighted. Louis Daggered invented the first camera Just t o capture things for memory. The camera was invented to capture a picture of anything you wanted to save as a memory. In today's world, people use the camera during many special occasions to remember that specific day. It helps a lot because so many people can enjoy or see what an occasion was like even if they weren't there by looking at the pictures.George Stephenson first attempted to create the first locomotive since others who tried failed. The locomotive was invented to try and succeed in an invention but lead to more better things. In today's society, we use the transportation for many reasons. We use it to haul cargo and 9 transport people to many places. â€Å"It was now that George Stephenson, about twenty years of age, set about the construction of his first locomotive. As we before stated, the want of good and skillful workmen was a great Arabica. Before it was invented, it was more difficult to transport anything to different locations. The period of the Industrial Rev olution greatly contributed to the world. It was a revolution which helped everyone in a positive way no matter what the situation was to them. Society became easier and less hard to live by having many inventions do our hard work for us. 10 Conclusion The Industrial development was a mixed blessing. It has its advantages and disadvantages; through this study I was able to appreciate the efforts of the inventors Just to make our life easier and more comfortable.Throughout those years everything were created and studied well, yet we were not able to see the needs of our environment while we were all happy inventing and making technologies as much as we want. The industries were able to brought countries and people together. There was an international awareness among people because developments in one country influenced the others, there were better transport, communications and mechanized goods made life comfortable for man. Unfortunately cities became crowded, smoky, with problems o f slums, housing, sanitation, accidents and epidemics.

Brain Development And Early Childhood Education Essay

Babies begin to learn about the world around them from a very early age. Children’s early experiences – the bonds they form with their parents and their first learning experiences – deeply affect their future physical, cognitive, emotional and social development. Learning starts in infancy, long before formal education begins, and continues throughout life. A young child’s brain needs certain types of stimulation to develop properly. Without that stimulation, certain types of learning will not be possible when the child enters school. Experts tell us that 90% of all brain development occurs by the age of five. If we don’t begin thinking about education in the early years, our children are at risk of falling behind by the time they start Kindergarten. This is why Early Childhood Education is so important. Infants and toddlers learn about themselves and their world during interactions with others. Brain connections that lead to later success grow out of nurturing, supportive and predictable care. This type of caregiving fosters child curiosity, creativity and self-confidence. Young  children need safety, love, conversation and a stimulating environment to develop and keep important synapses in the brain. During the first 3 years of life, children experience the world in a more complete way than children of any other age. The brain takes in the external world through its system of sight, hearing, smell, touch and taste. This means that infant social, emotional, cognitive, physical and language development are stimulated during multisensory experiences. Infants and toddlers need the opportunity to participate in a world filled with  stimulating sights, sounds and people. Before children are able to talk, emotional expressions are the language of relationships. Research shows that infants’ positive and negative emotions, and caregivers’ sensitive responsiveness to them, can help early brain development. For example, shared positive emotion between a caregiver and an infant, such as laughter and smiling, engages brain activity in good ways and promotes feelings of security. Also, when interactions are accompanied by lots of emotion, they are more readily remembered and recalled. The primary giver, when providing consistent and predictable nurturing to the infant creates what is known as a â€Å"secure† attachment. This is accomplished in that rhythmic dance between infant and caregiver; the loving cuddles, hugs, smiles and noises that pass between caregiver and infant. Should this dance be out of step, unpredictable, highly inconsistent or chaotic an â€Å"insecure† attachment is formed. When attachments are secure the infant learns that it is lovable and loved, that adults will provide nurture and care and that the world is a safe place. When attachment is insecure the infant learns the opposite. As the child grows from a base of secure attachment he or she becomes ready to love and be a friend. A secure attachment creates the capacity to form and maintain healthy emotional bonds with another. Attachment is the template through which we view the world and people in it. The brain grows from the bottom to the top. Each of the core strengths is related to a stage and site of brain growth. In infancy attachment bonds are acquired and lay down emotional signals deep within the brain. At the same time the brain stem is seeing to it that bodily functions can be self-regulated. Later on in childhood the emotional centers of the brain come under increasing control so temper tantrums disappear and the child controls their emotional life. In mid-childhood the child’s brain begins to develop the capacity to think and reflect on the external environment. It is at this stage when the frontal areas of the brain begin to mature and it is at this stage in brain growth when the core strengths of affiliation, attunement, tolerance and respect can mature as well. Reading aloud with children is known to be the single most important activity for building the knowledge and skills they will eventually require for learning to read. Babies show excitement by widening their eyes and moving their arms and legs when looking at a book with pictures of babies or other familiar objects. Babies learn from conversations even when they cannot understand what you are saying. When babies hear the same words over and over, the parts of the brain that handle speech and language develop. Talk to them as you are changing their diaper or feeding them. Get down on the floor with them when they are playing. Use this opportunity to talk about the different toys they have. You can talk about the color of the object or make noises, such as a car goes vroom, vroom. In infancy and early childhood, play is the activity through which children learn to recog- nize colors and shapes, tastes and sounds‚ the very building blocks of reality. Play also provides pathways to love and social connection. In early childhood, play helps children develop skills they can’t get in any other way. Babbling, for example, is a self-initiated form of play through  which infants create the sounds they need to learn the language of their parents. Likewise, chil- dren teach themselves to crawl, stand, and walk through repetitious practice play. At the preschool level, children engage in dramatic play and learn who is a leader, who is a follower, who is outgoing, who is shy. They also learn to negotiate their own conflicts. Study after study explicitly and unambiguously documents that what happens during the early years is critical to a child’s long-term cognitive and behavioral development, physical growth in childhood, and health in adulthood. Modern brain and child development research supports the need to provide nurturing, educationally stimulating, safe environments and experiences in the early years. A strong and nurturing relationship between children and adults is the most basic ingredient for growing up healthy. Supporting the whole child – physically, socially, and emotionally – provides a baseline for positive experiences from which the child can learn, grow, and thrive. These experiences shape a child’s life and create a strong, foundational web of support that positively contributes to their future.