Thursday, August 22, 2019
Empowerment is an unrealistic concept Essay Example | Topics and Well Written Essays - 2000 words
Empowerment is an unrealistic concept - Essay Example The managements are spending a lot of resources in empowering its employees in order to boost their competence. Employee empowerment involves conscious policy decision to develop workforces and engage them in more decision-making practices (Luttrell, Quiroz & Bird, 2007, p. 7). This study argues that the empowerment is an unrealistic concept and explores the reasons companies have not fully implemented the employee empowerment to enjoy the perceived advantages. Most organizational managers perceive employee empowerment as a strategic approach for cultivating and improving the employees’ potential by building their capacity to make a decision (Royal Pharmaceutical Society, 2011) Although proponents of employee empowerment consider it as an essential practice of recognizing the importance of all workers in the organization, there are many challenges associated with the empowerment practices thus making it impossible to attain the objectives (Rochford, 2010, p. 57). The management empowers employers in order to have more competent workforce. In so doing managers can devote routine issues to the workers and have more time to engage in strategic issues that are beyond the scope of worker in addition, it ensures quick decision making even in the absence of top managers. Also, empowerment or workers can motivate the workers and improve productivity (Rochford, 2010, 173). Finally, employee empowerment enables managers to reduce work-related stress by reducing the scope of activities they have to handle each day (Luttrell et al. 2007, p. 10). However, despite the perceived advantages of employees empowerment companies have continued to experience challenges with practical implementation of the empowerment practices. The success of employee empowerment is a mutually inclusive practice that should involve both workers and the management. In most cases,
How It Affects Economic Growth Essay Example for Free
How It Affects Economic Growth Essay In my opinion, supporting and promoting IT investment is one of the best ways to promote economic growth and stability with minimal side effects such as inflation, and easily overcome hurdles like unequal income distribution. While I don’t think you can really influence people’s personal ownership of computers, I do believe that offering tax incentives for IT investment and development will increase overall GDP, lower unemployment, and ensure an economically stable future. First and foremost, investment towards information technology increases productivity, and makes workers more efficient in what they do. With more resources such as faster word processing, 3D Model Rendering, and instantaneous transfer of data over the internet, laborers in every facet of the economy benefit from technology and enjoy greater productivity as a result. This increase in productivity means more products and services are produced with less time invested, and this means that Gross Domestic Product can go up. Furthermore, GDP is often defined as a function of both Capital and Labor. It is widely acknowledged that GDP growth can be measured by K/L, or Capital divided by Labor. Clearly, then, if each worker is using a higher value of capital (here in the form of fancier computers etc), then GDP is sure to go up. The concern then becomes, â€Å"what about inflation?†Surely, if GDP goes up, inflation will follow, no? Not quite. The accompanying graph gives us a rough idea of why. This increased efficiency will shift the Philips curve inward, meaning that for every unemployment rate, there is less inflation. More IT investment will mean that we will require more service technicians, troubleshooters, software programmers, etc, and we will see unemployment go down. Also, with more children learning about IT, they will also be more likely to get jobs when they grow up. When unemployment goes down, though, we typically see that there are less available â€Å"desperate†workers, and thus workers will have more power to bargain collectively. They will get wage increases, which will be passed on to consumers in the form of higher prices on final goods and services. This is offset by increased efficiency, as it takes less worker hours to make those products and services. As the Philips curve below shows us, the decrease in unemployment WOULD cause higher inflation, but because of increased efficiency, this change in inflation is offset. It is important to note the short run and long run effects of tax incentives on both the macro and micro levels. Here is a graph to get us started: We know that in the short run Demand shifts out as IT becomes more and more necessary. Supply shifts out because manufacturing costs go down, and thus existing firms will produce more at every price. These reductions to cost shift MC and ATC down; we don’t’ know how much each of these shifts is, though. We don’t know what P2 is, but we know that costs go down, so there is abnormal short term profit, and we know that each firm is going to produce more. In the long run, more firms will enter (shifting supply out further) until each player in the market is operating at their lowest cost on the ATC curve, which is the point where long run profits are equal to 0. We know that long run market quantity is greater because there are more firms in the industry, and we know that each firm produces in the long run what it did before all the shifts. Each firm is producing more in the short run than in the long run. Assuming that the government offers tax incentives to BOTH SUPPLIERS AND BUYERS of IT, we can expect to see the same demand shifts and supply shifts as we did in the 90s, when demand shifted out and the cost to produce came down. The tax rebates to suppliers means a reduction of cost (same as in the last example) and the tax rebates to buyers will make the price they have to pay lower, which will increase demand. One of the few drawbacks to the subsequent increased IT spending, of course, is the negative effect on the environment, as computers become obsolete quickly and are usually just thrown out. In my opinion, the environmental effect is definitely a huge drawback to increased IT investment. I believe that the government should give further incentives to companies who donate old or â€Å"B-stock†products to schools (preferably those in bad areas) or charities when they buy new ones . Donating these slightly flawed or last-year-model computers to schools would be an investment in human capital, which would increase GDP in future generations, as children become more tech savvy and productive with computers. Since the government is reducing the cost of production with tax incentives, I think they could get away by contrasting these incentives with slightly stricter environmental regulations as far as waste goes. They should set requirements on the packaging (which is created solely to be thrown out) that comes with IT goods, and should give even more incentives to companies that collect and recycle re-usable components such as circuit boards, plastic cases, and semiconductors – all components that are not biodegradable and are a large part of the junk filling our nation’s landfills. Another set of short and long term effects you must consider is the effect of tax incentives on those already involved in the market: IT workers. Again, we have a graph to help us visualize these effects. For this discussion, because of inflation, we must assume that we are talking in terms of real dollars, and that these wage prices are adjusted for inflation. In the 1980’s (short run), as IT became more important to industry, we see the demand curve for IT work shift outward, causing an increase in price and quantity as more qualified people started doing IT. In the long run, more competitors enter and the number of CS majors doubles; supply shifts outward, but we’re not sure by how much. We know that real wages go back down, but we don’t know if they are above, at, or below the original prices. We just know that they are decreasing, and that the overall quantity is much higher. The last major concern would be the â€Å"Digital Divide†– the concept that low income families do not use computers and thus are isolated from their potential benefits. This â€Å"digital divide†essentially means that poorer families have less access to the computer and tech skills to compete in the modern job industry, such as word processing and online research. They also have less access to online educational resources, and thus have less human capital. This means they are less likely to rise out of poverty, and are at a disadvantage. Those fortunate enough to be able to afford computers internet access will get more educated and richer, and those who are not fortunate enough get poorer. I personally am against racial discrimination in all forms, and I think targeting out minorities and saying â€Å"here, you need a computer†is wrong. I do, believe, however, that there should be some sort of program to give less fortunate children of all ethnicities the IT skills and access to computers that they will need to function in the modern labor market. This is where my idea of offering tax incentives to companies that donate â€Å"last year model†computers to charities or schools in bad neighborhoods could really benefit these people and help them accumulate human capital. I think that offering tax incentives to people who put computers in their home will be too difficult to manage, and I also think that in many cases, people without the means to get a good job (no technical background) will not be able to afford a computer either way – thus, it’s a vicious cycle. Additionally, I think people who can’t afford $40/mo for DSL are in this predicament because they don’t have technical skills, and thus, probably don’t value technology as much as they should. They probably still won’t be interested in broadband. I think the president’s broadband initiative should focus more on getting faster internet and more technical training into schools, so that the next generation, who still has the desire and patience to learn about computers, can do so at an early age. Overall, you can see that there is a long list of benefits, and a short list of easily overcome problems with increased investment. In fact, even the Fed benefits. Normally, increased investment would make the Fed have to increase interest rates to prevent inflation and â€Å"cool off†the economy. IT is unique, however, in that it also provides greater efficiency, thus shifting the curve as discussed earlier. I would argue that it makes the Fed’s job easier – it’s promotes economic growth and employment, without jeopardizing economic stability. All in all, I say that giving tax incentives to producers and suppliers of IT goods and services is a great plan!
Wednesday, August 21, 2019
Project Design for IPMS
Project Design for IPMS  1. Scope Statement. In order to develop an effective project for IPMS within 12 weeks with limited costs using limited resources provided by Whitireia using IPMS to monitor and handle software companys projects, roles, employee information, skill level and timetables for its client and third party 1.1 Functional requirement: 1. To everybody can use the IPMS well, they must can create at least four kind of roles in the system, one is the administrator, who can maintain the system; the second is normal employee who can login to update details, the third is project manager, the fourth is project team member. Each employee has only one unique employee ID. 2. IPMS must can add, update and search the project, and the project manager can assign each task to available employee. And the project manager can add, delete, update and search employees. 3. The employee must have a job code, job title and other details such as the date to commence, hourly rate etc. 4. IPMS can let project manager add new job titles and details. And add new client. 5. The system must be able to show who responsible to each different tasks 6. The program manager and the team member must can be print the report, and they must be able to fill daily record and time sheet. 8. The clients must be able to check the projects time sheet. 9. The team member must be able to show the test result, and fix them. 10. The project must be show the project details. 1.2 Non-Functional Requirement (Optional Req) User may or could 1. IPMS should add more skill levels, or delete. 2. E.g.: DB storage 3. Upgrades/ Maintenance 4. Reliability 5. Scalability 1.3 Technical Requirements Software: OS-Windows 10, Visual Studio 2015, SQL Server 2014, Visio 2016, Word 2016, Excel2016, Languages: C#. Hardware: CPU, Ram, Disk, Mainboard, MainBox 2. Case diagram. 3. IPMSs design class details 4. Ten Questions. 4.1 Interface and Inherited. Interface: The interface is a special abstract class; it cannot be instantiated, the same as abstract class (because it contains abstract members, and abstract members do not contain method body). When you want to declare the interface, C# required you to use the Interface keyword, the same as class. There is no fields in the interface, so it is not possible to define explicit attributes in the interface. If you want to inherited interfaces, you must implement all the abstract members of the interface. And in inheritance class, no need to use the override keyword in interface members realization. And you must keep the same sign to achieve the interface. The different between abstract class and interface are: you can find the parent class when you use the abstract class, and hope the parent class inherited to some subclass members. If you use interface, it is a purely to achieve the norms of the class. In this project, it can use the interface in print, like print the invoice, just getInvoice(), then use print interface, or getReport(), then use print interface. That mean it can print everything. Just print. Inherited: Inheritance allows us to define another class based on a class, which makes it easier to create and maintain an application. It also conducive to reuse code and save development time. When creating a class, the programmer does not need to completely rewrite the new data members and member functions, only need to design a new class, inherited the existing members of the class can be. This existing class is called the base class, and this new class is called the derived class. C# only supports single inheritance, that means a category can only inherit from a parent class. But we can use interfaces to implement multiple inheritance. In this system, the project manager can look as the employees subclass, and inherited all the attribution from the employees. 4.2 Polymorphism Polymorphism means that the sender of a stimulus does not need to know the receiving instances class. The receiving instance can be login to an arbitrary class. Object-Oriented Software Engineering: A Use Case Driven Approach page 55. In polymorphism, sender doesnt explain the meaning of a message or event or stimulus, it is explained by the recipient (the object that received the message). So, in the runtime if the recipient is changed to different object or instance, the system will change the behavior. In this system, if we need to calculate each employees wage, different kind of employee has different salary, but they all need to calculate wage, Here the procedure (calculate wage) is same, but each employee has different result way to do it, it depends on the Runtime(). Iemployee list[]= getAll employee(); For(i=0; list.length, i++) { list[i].calculatewage(); } 4.3 Event Handlers and Delegate. Delegate has the type-safe, secure managed feature to ensure that the delegate points to the existing function (method), if the delegate has not stored any way to call, the CLR will throw an exception. More precisely: Delegate is a special type of C #, used to define the method / function of the signature, delegate entity (instance) can store one or more method with signature. It need 4 steps to declare a delegate: declare, create, point and invoke. To declare an event within a class, you must first declare the delegate type for the event. delegate After the class declares an event, the event can be processed as if it were processing the field of the delegate type indicated. If no client will be entrusted with the event, the field will be empty; Otherwise the field references the delegate that should be called when the event is called. Therefore, when the event is called, it is usually checked whether it is empty, and then call the event. From the context of declaring events, the event is like a field, but access to that field is very restricted. Only can do the following: Write a new delegate on this field. Removes a delegate from a field (possibly a compound field). Use the + = and = operators to do this. To start receiving an event call, first creates a delegate of the event type in the client coding, which should be referenced from the event call. Then it uses + = to write the delegate to any other delegate that the event may connect to. When the client coding completes the receive event call, it will use the operator = to remove its delegate from the event. There are three handlers in my design for the IPMS. They are login handler, print invoice handler, print report handler, and fix handler. public class ProjectmanagerAA { public static void PintReport() {   //Print the project report! à ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦ } public static void PintInvoice() {   //Print the Invoice of the project à ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦. } } class Teammember {    public delegate void PintReportEventHandler();    public static void Main(string[] args)    {        PintReportEventHandler printDelegate = new PintReportEventHandler(ProjectmanagerAA.PintReport);        printDelegate += ProjectmanagerAA.PintInvoice;        printDelegate();        Console.ReadKey();    } } 4.4 Controller class The controller class happened in MVC software architecture model, and MVC is one of the architectural pattern. That means the IPMS system is divided into three core parts: Model, View, Controller. View is provided to the users user interface, is the program shell. Model is the core of the data layer, that is, the program needs to operate the data or information. Controller is responsible for the user from the view layer input instructions, select the data layer in the data, and then its corresponding operation, produce in the result. From the design class, I added many methods and events in the controller, if changed some code out of the controller, there is no effect to the controller. It can protect the algorithm in the controller. Then I can reuse the code easily. The controller can increase maintenance, scalability, and flexibility of the program. It good for testing. The code hierarchy is clear. They are through subclasses to complete the operation. The details in controller: addEmployee() updateEmployee() delEmployee() searchEmployee() getEmployeeInfo() settingAndAssigning() addclient() addProject() updateProject() closeProject() getProject() searchProject() addTask() updateTask() delTask() getTask() searchTask() getInvoice() getReport() print() 4.5 Design Pattern(s) I chose the following design patterns when I design it, but it very difficult for me to draw all of them in the design class, I will try to used them all in the system. 1) Template Method: Define the skeleton of an algorithm in operation, and delay some steps into subclasses. Template Method makes it possible for subclasses to redefine some of the specific steps of the algorithm without changing the structure of an algorithm. - design pattern GOF. If we need to simply read the Employee database records and display the table. For database operations, we know that no matter which table to read, it should generally go through the following steps: 1. Connect to the database (Connect) 2. Execute the query command (Select) 3. Display data 4. Disconnect the database connection (Disconnect) These steps are fixed, but the query for each specific data table is not the same. Obviously, this requires an abstract role that gives top-level implementation. As shown below: public abstract class DataAccessObject {    protected string connectionString;    protected DataSet dataSet;    protected virtual void Connect()    {        connectionString =            Server=.;User Id=sa;Password=;Database=Northwind;    }   protected abstract void Select();   protected abstract void Display();   protected virtual void Disconnect()    {        connectionString = ;    }    // The Template Method    public void Run()    {        Connect();        Select();        Display();        Disconnect();    } } Obviously in this framework DataAccessObject gives a fixed outline, the method Run() is the template method, Template Method model also hence the name. And for the Select() and Display() these two abstract methods are left to the specific sub-class to achieve. 2) Command Pattern: The Command pattern encapsulates the command, separating the responsibility of the commander and the responsibility of the commander. We know that a class is a set of operations and the corresponding set of variables. 3) Observer Pattern: it can be used in the task class, once a task completed, via observer pattern to notify the project manager and project team and showing the team member is available, then project manager can give the member a new task. 4) Chain of Responsibility Pattern: let multiple objects have the opportunity to handle the request, thereby avoiding the coupling between the sender and the receiver of the request. Connect these objects into a chain, and pass the request along the chain, until there is an object to deal with it so far. This happened when the project manager assign the tasks to the project member. 5) Strategy Pattern: Define a system of algorithms that encapsulate them one by one and make them replace each other. This mode allows the algorithm to change independently of the customer who uses it. design pattern GOF. It used in our controller class, we protect all the algorithm in the controller, and we give it an interface to access. 6) State Pattern: We have to have the state pattern, Objects have different states and tend to exercise different behaviors. We have many status need to record in this system, employees status, project status, task status etc. and the handler is a typical state pattern. 7) Singleton Pattern used in Invoice, each project has only one Invoice. 8) Prototype Pattern used to isolate the coupling between the user of the class object and the specific type (variable class) which also requires this some variable classes have stable interfaces. It is used in the system, like the controller. 9) Facade Pattern: In the software development system, the use of Facade Pattern simplifies the simplification of the interaction between the client and the subsystem. Decoupling the dependencies between the internal subsystems of the complex system and the client program. In this system, it can be used in project manager, the project manager need to deal with lots of works for the project team and the project. 10) Proxy Pattern is used here like the interface class. 4.6 Database ADO.NET ADO.NET has three database client namespaces: one for SQL Server, another for Open Database Connectivity (ODBC) data sources and a third for any database exposed through OLE DB. Data-sharing consumer applications can use ADO.NET to connect to data sources and retrieve, manipulate, and update data. Connect database code:              connectionString=Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Books.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True        providerName=System.Data.SqlClient />  4.7 Some Ways to Generate Reports Create a report view, and create a report structure. And call the details (such as project code, client details, the project start date, end date, the project status, budgets, and employee assigned) from the database. And the report must be able to create each tasks detail report. We can use handler here. It should mention who can create the report directly and who can see the report. using System; Local Reports: Â Â Â Â Â Â Â à £Ã¢â€š ¬Ã¢â€š ¬Ãƒ £Ã¢â€š ¬Ã¢â€š ¬LocalReport report = new LocalReport();            DataTable dtable1 = rdlcbiz.Get_tj_sqdlx_hd(tjr, tjs);            DataTable dtable2 = rdlcbiz.Get_v_tj_tjdjb(tjr, tjs);            report.ReportPath = Application.StartupPath + @/rcreport/Report.rdlc;            report.EnableExternalImages = true;            ReportParameter r1 = new ReportParameter(tjs, str_tjdw);            ReportParameter r2 = new ReportParameter(barcode, str_path);            report.DataSources.Clear();            report.SetParameters(new ReportParameter[] { r1, r2 }); ReportDataSource(PEISDataSethd, dtable1))            report.DataSources.Add(new ReportDataSource(PEISDataSethd, dtable1));            report.DataSources.Add(new ReportDataSource(PEISDataSetjb, dtable2));            RdlcPrintNew rdlcprint = new RdlcPrintNew();            rdlcprint.Run(report, Report Name, false, A4); The above code is when I click to print a report, call a method. Inside rdlcprint.Run (report, report name , false, A4); this method can be transferred to the hardware printer. The principle is: use LocalReport class to design the report, and store it on the local; then loaded in the parameters and data sources in the report to the specified report; call rdlcprint.Run (report, report name , False, A4); to achieve printing. CrystalReports: The CrystalReportViewer control allows you to view Crystal Reports in your application. The ReportSource property is used to set which report to view. After the property is set, the report is displayed in the viewer. The report source can be either the ReportDocument, the path to the report file, or the strongly typed report. In this system, we can create report from ADO.NET dataset using System; using System.Windows.Forms; using CrystalDecisions.CrystalReports.Engine; using CrystalDecisions.Shared; namespace WindowsApplication1 {    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            ReportDocument cryRpt = new ReportDocument();            cryRpt.Load(PUT CRYSTAL REPORT PATH HERECrystalReport1.rpt);            TableLogOnInfos crtableLogoninfos = new TableLogOnInfos();            TableLogOnInfo crtableLogoninfo = new TableLogOnInfo();            ConnectionInfo crConnectionInfo = new ConnectionInfo();            Tables CrTables;            crConnectionInfo.ServerName = YOUR SERVERNAME;            crConnectionInfo.DatabaseName = DATABASE NAME;            crConnectionInfo.UserID = USERID;            crConnectionInfo.Password = PASSWORD;            CrTables = cryRpt.Database.Tables;            foreach (CrystalDecisions.CrystalReports.Engine.Table CrTable in CrTables)            {                crtableLogoninfo = CrTable.LogOnInfo;                crtableLogoninfo.ConnectionInfo = crConnectionInfo;                CrTable.ApplyLogOnInfo(crtableLogoninfo);            }            cryRpt.Refresh();            cryRpt.PrintToPrinter(2, true, 1, 2);        }   } } 4.8 Testing Classification of software testing According to the testing process (development stage), the software testing is divided into the following categories: Unit Testing: Its known as module testing, software design is the smallest unit testing the program module for the correctness of the test work. Integration Testing: its known as assembly test, according to the design requirements, assemble modules for testing, the main goal is to find the interface-related issues. Confirm testing: Verify that the function and performance of the software and other features are consistent with the users requirements. System testing: it is carried out after the integration test, the purpose is to fully run the system to verify whether the subsystems can work properly and complete the design requirements. Acceptance Testing: user-oriented, developers to participate in the test to the specifications for the model. The testing procedure as follows: 4.9 Additional Function This system has a lot of features, if it also can add HR to manage the staff and calculate the salary, it should be better; If we can set the completion date and time for this project, when you log in the system, the message window will show the countdown time for the project team member to remind them to obey the time well; Each task can be automatically assigned to the free project members, when a task is clicked at the end of the time, the system will automatically test it, find out the problem and solve it; After repaired the problem then click the button to notify all the relevant personnel of this task has been completed and so on. 4.10 For Growing Requirements Development principles: The design should be open when the design to adapt to change; Database design should be standardized; Design framework should also be standardized, standardized system and documents have significance significant for system upgrade and maintenance; To unify the development process when system planning. Development and change, information technology with each passing day, the internal and external environment of enterprises will be changed, which requires us to re-develop the time to focus on the scalability of the system to meet the changing needs of enterprises. And we should use the modular structure, object-oriented technology, middleware technology and other software reuse technology for the growing requirements.
Tuesday, August 20, 2019
Normal Flora and their Benefits
Normal Flora and their Benefits Normal Flora and their benefit The normal flora is a bacteria found in or on ones bodies on a temporary basis without causing disease. In that respect are larger numbers of bacteria than cells present in ones body. The human body contains around 1013 cells, whereas the human physical structure is home to around 1014 bacteria. One-fourth of fecal weight consists of bacteria. They mainly inhabit the Large Intestine. They are likewise set up in the respiratory tract, particularly the nose, the Digestive tract, i.e., in the oral cavity and the terminal ileum and also in the Urinary tract. Discussion The normal flora of humans are extremely composite and comprises of more than 200 species of bacteria. The physical composition of a typical plant life gets influenced by several agents, including genetics, age, sex, strain, nutrition and diet of the mortal. The normal flora of the digestive tract The stomach contains fewer bacteria due to its high acidity nature. However, there are some bacteria that survive there like the Helicobacter Pylori whose human interaction got discovered in the 1980s and that is currently proving to be the cause of most cases of gastritis and peptic ulcers. Likewise, the small intestine contains small numbers of Streptococci, Lactobacilli, and yeasts, particularly Candida Albicans. Nevertheless, bigger numbers of these bacteria are found in the lower parts of the ileum, which is a section of the small intestine before the large intestine. The colon is the main site for bacteria in the body. Several bacteria like Bacteroides, Bifidobacterium, Eubacterium, Coliforms (e.g. E. coli), Streptococcus, Lactobacillus and Clostridium reside in the large intestine. Approximately twenty percent of the faeces of an ordinary person consist of bacteria, most of which have come from the colon. The respiratory Tracts Normal Flora. A large number of bacterial species inhabit the upper respiratory tract since it lacks ciliated epithelium that is an efficient cleansing action. For example, the nostrils are always heavily colonized, with Staphylococcus epidermis. The Microbe of the Skin Man’s epidermis is not a fertile region for microorganisms to inhabit since the surface is comparatively dry and somewhat acidic. It, therefore, impede the development of many microbes but, however, inhabited by few that have adjusted to the skin. An example is the Propionibacterium acne and the Staphylococcus epidermidis. The Nostrils Normal Flora. Organisms’ nostrils are a habitat to the Gram-positive pathogens as Staphylococcus aureus. The Microorganism is recognised well for its duty in health centres in which it is the primary causal agent of systemic infection and surgical injury. Thither are many dissimilar types of kinship that the body can induce with the normal flora. These are: Mutualism. In this type of relationship, both the Microbe, and the host benefit from the relationship. For instance, the E. Coli. These organisms reside in the intestines, where they get nourishment, and in turn produce Vitamin K, that the human body requires for the cognitive operation of the blood coagulation. In essence, as the Microbe acquires a stable contribution of nutrients, stable environment, protection and interest, the host also obtains individual nutritional and digestive gains as well as the development and natural action of the immune system which protects it against the pathogenic infection by the microbes. Commensalism. Commensalism refers to a kind of kinship in which one collaborator of the association benefits, while the other collaborator neither benefits nor get harmed. Parasitism. This kind of relationship is one in which one organism benefits at the expense of the other. However, mostly, the Microorganism benefits at the cost of the ringmaster. For instance, an external parasite is said to cause infestation while an internal parasite is said to cause infection to the host. Pathogenic. This sort of relationship is one in which the microorganism causes destruction to the ringmaster during infection. An Opportunistic Pathogen causes an infection in the host that is physically impaired or debilitated. Mostly, the opportunist organism is harmless; however, it takes advantage when the hosts defenses are impaired, for example, when the immune system is being suppressed by drug treatment or other illnesses. Characteristics of the Normal Flora The Normal flora exhibit certain characteristics. These are: Not disease-inducing: They normal flora are also known as Microbiota and are not typical disease causing micro-organisms found in and on healthy individuals. Very abundant: The normal flora are extremely abundant in terms of sheer numbers. For instance, an ordinary human has approximately 1013 body cells and 1014 individual normal flora. All found externally: Normal flora are found more often than not on the skin, eyes, nose, oral fissure as well as on the throat and lower parts of the urethra and the large intestine Benefits of the Normal Flora There is an increased ability of the host to nourish itself since the bacteria Produce vitamins that the human body is ineffective to give forth like vitamin B12 and vitamin K. They help digest food as they break down foodstuffs that are normally indigestible by the host into forms that are easily digestible by the hosts. The Normal flora protects the host against infection by pathogenic organisms. similarly, this takes place as the normal flora out-competes the invader for available nutrients, therefore, starving the invader and preventing it from reproducing. Likewise, the normal flora may pre-occupy the favorable ecological niches for bacteria, e.g. the intestinal villi, so confronting the invading pathogen with the trouble of getting somewhere to anchor itself. Similarly, certain members of the normal flora produce anti-bacterial chemicals as a side product of their metabolism, therefore, taking a local antibiotic effect which hinders the invader. The Normal flora helps in hiking up ones immune system. The germ-free animals given birth to and brought up in a germ free environment are very susceptible to disease when transferred from the germ free environment since their immune system is still underdeveloped. Therefore, the presence of the Normal flora helps in protecting the human body from highly pathogenic organisms. They synthesizes and excrete vitamins in surplus of their individual wants, which are useful to the host and which can be taken in as nutrients. For instance, in humans body, enteric microorganisms produce and discharge Vitamin K and B12 whereas lactic acid microorganisms release vitamin B that are mostly utilized by the host as nutrients. The microbes as well harbor colonization by microorganisms by contending for attachment places as well as for the essential nutrients. Consequently, this is considered their most significant profitable effect, that presents itself in the mouth, the bowel, the epidermis as well as in the vaginal epithelial tissues. The Microbes induces the production of natural antibodies and thus contribute to the immunity in the human body. likewise by stimulating low levels of circulating and secretory antibodies, they enhance the bodies immunity. It may also counteract other microorganisms through the output of substances that stamp down and bottle up non-endemic classifications. The intestinal microorganisms fabricate a diversity of materials ranging from non-distinct fatty acids to distinct bacteriocins, that stamp and kill other microorganisms. The microorganisms induce the growth of particular body tissues which include the individual lymphatic tissues and the caecum within the GI region.The caecum of bacterium-free organisms is thin walled, filled with fluids a well as enlarged in size in comparison to the ones in standard animals. Likewise, found upon the capacity to withstand immunological stimulation, the enteric lymphatic materials of the Conventional animals are highly developed as compared to those of the germ-free animals. They stimulate an immunological response, in particular, an antibody-mediated immune response as they act as antigens in the human body. Low volumes of antibodies brought forth against the constituents of the microbes are acknowledged to respond with particular related microorganisms, and thus preventing infection as well as invasion of the human body. The antibodies fabricated against the antigen ingredients of the microbes are at times known as inborn antibodies, and which lack in bacterium-free organisms. Intestinal human flora carry out a diverseness of all-important metabolic reactions that give rise to various compounds. The compounds include vitamins B12 and K and gas. Conclusion The Normal Flora as well has limitations to the human body. For instance, Most flora are pathogens and; therefore, they may be agents of diseases. Similarly, if they gain access to certain issues, they may cause infections as well as destruction. Likewise, the Microbe may absorb some of the hosts’ nutrients due to competition, leading to the development of bacterial antibiotic resistance in humans. Works Cited Bitton G., and Marshall KC: Adsorption of Microorganisms to Surfaces. John Wiley Sons, New York, 1980 . English MP,. Microbes, Man, and Animals: The Natural History of Microbial Interactions. New York: Wiley. 1982. Print Hillman JD., Genetically modified Streptococcus mutans for the prevention of dental caries. Antonie Van Leeuwenhoek .2002 Postgate JR. Microbes and Man. Oxford, UK; New York: Cambridge University Press. 2000. Draser BS., and Hill MJ: Human Intestinal Flora. Academic Press, London, 1974. Relman DA, and Falkow S. The meaning and impact of the human genome sequence for microbiology. Trends Microbiol. 2001. Salyers AA., and Whitt DD. Microbiology: Diversity, Disease and the Environment. Bethesda Maryland: Fitzgerald Science Press. 2000. Staley JT., and Reysenbach AL. Biodiversity of Microbial Life: Foundation of Earth’s Biosphere. New York: Wiley. 2002. Print
Monday, August 19, 2019
To Kill a Mockingbird by Harper Lee :: To Kill a Mockingbird Essays
â€Å"To Kill A Mockingbird†     After watching To Kill A Mockingbird, the characters I see the author trying to teach me through is Atticus Finch, Scout and Jem, and Arthur â€Å"Boo†Radley.      To begin, Atticus Finch has experienced and understood evil throughout his life. He has been confronted with prejudice and racism, but has not lost his faith in the human capacity for goodness. Atticus understands from his own experiences and reflection that most people have both good and bad qualities. Also, through Atticus, the important thing in life is to appreciate the good qualities and understand the bad qualities by treating others with sympathy and trying to see life from their perspective. He tries to teach this ultimate moral lesson to Jem and Scout to show them that it is possible to live with conscience without losing hope or becoming cynical. For example, in this way, Atticus is able to admire Mrs. Dubose’s courage even while deploring her prejudice. In much the same way, Scout’s progress as a character is defined by her gradual development toward understanding the lessons Atticus Finch tries to teach her when Scout at last sees Boo Rad ley as a human being. Her newfound ability to view the world from his perspective ensures that she will not become jaded as she loses her innocence.      Secondly, I believe the most inspirational and in depth character in this movie was Jean Louise â€Å"Scout†Finch. From beginning to end, she learns to control her temper, to back away from fights, and to respect Calpurnia. She really learns her value to the family. Scout is also able to maintain her basic faith in human nature despite the shock and unfairness of Tom Robinson’s courtroom conviction. However, Jem’s faith in truth, justice and humanity is very badly damaged. He does not understand why all of this is happening. Prejudice and racism does not make any sense to Jem. Initially, Scout and Jem assume that all people are good by nature and tolerant of others. It is not until they see things from a more realistic adult perspective that they are able to confront evil, as well as prejudice, and incorporate it into their understanding of the world.      Lastly, Arthur â€Å"Boo†Radley has for decades been maliciously slandered in the county. The people that have done so do not know Boo and the reason they can make such judgments escapes me. When there was a series of pets being mysteriously slaughtered, the consensus was that it was performed by Boo.
Sunday, August 18, 2019
Provisional Voting :: essays research papers
Part I: Current Social Issues One social issue in my community that concerns me is that of provisional voting, which is proving to be an issue in many communities. The requirement that all states make provisional voting available was passed down by congress. Unfortunately, no guidelines were included with this requirement, and therefore the decisions on which provisional votes are counted and which ones are not differ not only from state to state but from county to county. As a result, provisional voting is beneficial to some and not to others. The main agencies involved with this issue would be the local election offices as well as the secretaries of state. Part II: Relevant Agencies Quite obviously, the main agency that would be involved with the issue of provisional voting is the local elections office. This agency devotes great energies to make sure that every member of the public is given the opportunity to cast their votes. Because this is the agency that determines whether or not each provisional vote will count, these are the individuals that play the most major roll. The Secretary of State’s office is also like to be involved in provisional voting. Each state is expected to be responsible for drawing up guidelines for the procedures to be followed for provisional voting. At present time, the guidelines are unclear, if existent at all, but at some point must be addressed by the Secretary of State. The local elections office and the Secretary of State represent the government sector. The final organization that I expect to see involved with provisional voting are the pollworkers. These are the individuals that volunteer their time on election day to officiate the polls where votes are cast. Since provisional voting is still quite new, the procedures can be somewhat confusing, and it is these people that must make sense of it. I would classify them as being part of the philanthropic sector. Part III: Final Paper Topic The issue I have chosen to further develop for my final paper is that of provisional voting and the guidelines by which the decisions are made as to which provisional votes will be counted and which will not. I have chosen to pursue this particular issue due to the fact that I work as an Elections Coordinator and I have recently experienced my first election from behind the scenes, so to speak. Provisional voting is a serious issue, required by Congress, but handed down with little or no guidelines. Provisional Voting :: essays research papers Part I: Current Social Issues One social issue in my community that concerns me is that of provisional voting, which is proving to be an issue in many communities. The requirement that all states make provisional voting available was passed down by congress. Unfortunately, no guidelines were included with this requirement, and therefore the decisions on which provisional votes are counted and which ones are not differ not only from state to state but from county to county. As a result, provisional voting is beneficial to some and not to others. The main agencies involved with this issue would be the local election offices as well as the secretaries of state. Part II: Relevant Agencies Quite obviously, the main agency that would be involved with the issue of provisional voting is the local elections office. This agency devotes great energies to make sure that every member of the public is given the opportunity to cast their votes. Because this is the agency that determines whether or not each provisional vote will count, these are the individuals that play the most major roll. The Secretary of State’s office is also like to be involved in provisional voting. Each state is expected to be responsible for drawing up guidelines for the procedures to be followed for provisional voting. At present time, the guidelines are unclear, if existent at all, but at some point must be addressed by the Secretary of State. The local elections office and the Secretary of State represent the government sector. The final organization that I expect to see involved with provisional voting are the pollworkers. These are the individuals that volunteer their time on election day to officiate the polls where votes are cast. Since provisional voting is still quite new, the procedures can be somewhat confusing, and it is these people that must make sense of it. I would classify them as being part of the philanthropic sector. Part III: Final Paper Topic The issue I have chosen to further develop for my final paper is that of provisional voting and the guidelines by which the decisions are made as to which provisional votes will be counted and which will not. I have chosen to pursue this particular issue due to the fact that I work as an Elections Coordinator and I have recently experienced my first election from behind the scenes, so to speak. Provisional voting is a serious issue, required by Congress, but handed down with little or no guidelines.
Saturday, August 17, 2019
Simbio Nichewars
Niche Wars David Scott Smith-3/27/2013 Introduction: This report discusses an experiment to study the relationship between the ecological niche and competition. The hypothesis formulated states that if competition traits are identical and resources are abundant than multiple species will be able to coexist, and if one species has an advantage over the others than this species will be more likely to out compete another species for resources. The objective of this experiment is to use a simulation model of a rabbit pen containing four different â€Å"species†of rabbits.The model establishes rules for each species that are based on a number of important characteristics reflecting their ecological niches and their competitive abilities. These characteristics include how far rabbits can see (to find food), how fast they can hop (to acquire food), how much energy they use each day just to stay alive, how much energy they must accumulate before reproducing, and how much energy they absorb from each type of food they eat. This simulation model is â€Å"parameterized†by assigning values to the variables for the rules.This experiment relates very closely to the competitive exclusion principle sometimes referred to as Gause's Law of competitive exclusion or just Gause's Law, which states that two species that compete for the exact same resources cannot stably coexist. One of the two competitors will always have an ever so slight advantage over the other that leads to extinction of the second competitor in the long run. Methods: In this experiment, there was 4 different rabbit species (black, white, red, brown) that were competing over 1 resource (lettuce).The species had different characteristic settings that could be adjusted in the attempt to have all 4 species coexisting together. These characteristics include how far rabbits can see (to find food), how fast they can hop (to acquire food), how much energy they use each day just to stay alive, how much e nergy they must accumulate before reproducing, and how much energy they absorb from each type of food they eat. Also there was parameter setting determining how much food was grown and the location of the food.The first step of this exercise was determining how competitive exclusion affected the species when a critical resource is limited in the environment. The modification to increase/decrease the amount of lettuce (the limiting resource) available each week was ran 3 different times set on (2,4,8). Next changing the characteristic settings for each species was looked at to determine what would account for the best coexistence to exist. The white species energy level for black rabbits was changed to 4. The black rabbit’s energy level for white was also changed to 4.The brown rabbit’s energy level for red rabbits was changed to 4. The red rabbit’s energy level for brown rabbits was also changed to 4. By making certain rabbits predators on other rabbits it allow s for 2 species to coexist with one another once the preyed upon species went extinct. The amount of lettuce per week was also doubled than tripled and finally quadrupled to see how this change affected the species. Results/Discussion: Changing the species characteristic settings allowed for 2 species to coexist with one another but that is the best I could achieve.When using the predation characteristic it helped the species stay near their carrying capacity which allowed them to be able to coexist. The predation characteristic is highly likely in nature and is most likely one of the key factors contributing to the selection of certain habitats and niches. When competition traits were all identical and resources were increased to be abundant than multiple species were not able to coexist and most went extinct because they over shot their carrying capacities which disproved part of the initial hypothesis.When all four species were biologically identical, it was impossible to correct ly predict which species would survive competition but when one or two species were given an advantage you could predict which species would survive the longest. Conclusion: Different characteristics of species allows for the types of niches that can be occupied and whether or not they can be coexisted for example a food specialist will have anatomical and physiological adaptations that allow it to acquire and extract energy and nutrients from one food source extremely well, but will be at a disadvantage if that food source runs low.A food generalist may not acquire as much energy from the specialist’s preferred food, but will be able to make up for that by consuming other kinds of food. We can easily envision circumstances in which either species might outcompete the other. To achieve coexistence of species the carrying capacities of certain species must not be overshot and remain constant.
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