Routing Protocol

1. INTRODUCTION 1. 1 What  is Computer Network? The group  of  computers and devices linked by communication channels allowing users to share information, data, software and hardware with further users is meant to be computer network. Network protocols bound hardware as well as software components of network. Two or more  computers are said  to be  in  a network if and only if they are connected  mutually  and  are  able  to commune. Computers are connected to a network by the use of all  the ports i. e. , parallel ports, modem ports, Ethernet ports, serial ports, USB ports  , fire wire ports and many more in one or more way. But Ethernet port is the most broadly used ports  for networking. Hosts, end stations or workstations are referred while talking  about networks. Anything  attached  to  the network  including hubs, bridges, switches, routers,  access points, firewalls, workstations, servers, mainframes, printers, scanners, copiers, fax machines  and more are included under Host or end stations . Computers are connected in a network for sharing of software and hardware resources, information and data as well as smooth the progress of communication. 1. 2 TCP/IP Layered  architecture Fig: TCP/IP Layered  architecture The following  are  the layers  of  the TCP/IP  architecture: Application Layer: In the  application layer Simple Mail Transfer Protocol (SMTP) and File Transfer Protocol (FTP) uses protocol  for network communication. Application layer protocols  are most  frequently  linked with client-server  applications. Transport Layer: End-to-end message transfer capability, flow control, error control and fragmentation etc are provided  by the transport layer. The transport layer ensures source to destination delivery of packets safely and reliably. The service through which applications are connected  together via  the use  of ports is provided by transport layer. Network Layer: Packets are logically transmitted over  the entire network in the OSI’s Network layer. Hosts addressing by assigning  them  an IP  address  and packet routing among multiple networks are handled in this layer. This layer is concerned with routing data; end to end message delivery etc. Interface Layer: The data exchange between  the host  and  the network are monitored by the  interface layer. The protocols for  physical transmission  of data is defined by Interface Layer . 1. 3  Autonomous System IP networks  and routers collection under  the control  of one entity representing a common routing policy is called an  Autonomous System. Each  AS  have a unique  AS number  for use  in routing. Each network is uniquely identified on  the  internet by ASN. IANA (Internet  assigned Numbers  authority) assign AS numbers  and supply  to Regional  internet Registries (RIRs)  in blocks. Autonomous System can be divided  into three categories: Multihomed  Autonomous System:   Connections  to more than one  AS is maintained by a Multihomed  AS. Stub  autonomous System:   Connection  to only one other  AS is Stub  autonomous System. Transit  autonomous System:  Connections through itself  to separate networks are provided by Transit  autonomous System. 1. 4 Routing The method  of selecting paths  in  a network via which  to send data is meant to be routing. The process  of finding  a pathway from  a sender  to  a desired destination is also said to be routing. The telephone network,  the  internet  and transport networks, etc perform routing. Network Layer  of either TCP/IP layered model or  the OSI (Open System  interconnect) Reference model mainly carry out routing. The logically  addressed packets are passed from  their source  to destination via  intermediary nodes i. e. orwarding is directed by routing. Routing tasks are performed by routers. Routing and packet forwarding is performed by ordinary  computers available with multiple network cards in a limited manner. Forwarding is directed by the routing process on  the basis  of routing tables where routing record to different network destinations are maintained. In order to have efficient routing, construction of routing table held  in  the routers' memory is most necessary thing. Only one network path are frequently used by routing  algorithms   at  a time, but  the use  of multiple  alternative paths is made possible by multi-path routing techniques. Following are the types  of routing delivery semantics: Unicast: A message is delivered to  a single specified node by router. Fig: Unicasting Broadcast:   A message is delivered  to  all nodes  in  the network by router. Fig: Broadcasting Multicast:   A message is delivered  to assembly  of nodes that have expressed  interest  in getting  the message by router. Fig: Multicasting Anycast: A message is delivered  to  any one out  of  a set  of nodes, typically  the one next  to  the source. Fig:  anycasting 2. TYPES  OF ROUTING Following are the types  of Routing mechanisms. They  are: Static Routing Dynamic Routing 2. Static Routing: The process  by which routes can be manually entered into the routing table with the help of a configuration file which loads automatically as soon as router starts is called static routing. Network  administrator, who configures the routes, can enter these routes as an option. Thus ‘static' rou tes mean the routes that cannot be changed (except  a person changes  them)   after their configuration. The simplest  type  of routing is static routing. In case of change of routing information often or configuration on a huge number of routing devices (router) it doesn’t work fine as it is a manual process. The outages or down connections are not handled properly by static routing because  manually configured route must be reconfigured physically in order  to fix or renovate  any lost connectivity. 2. 2 Dynamic Routing: Network destinations are discovered dynamically  by means of software  applications called Dynamic routing protocols. A routing table is created and managed by router  in Dynamic Routing. Firstly, a router will ‘learn' routes  to  the directly connected entire networks. It will  then learn routes from other routers using the same routing protocol. One or more best routes are selected from the list of routes for each and every network destination by router. ‘Best route'  information are distributed  to other routers running  the same routing protocol by Dynamic protocols, distributing  the  information on what networks it subsist  and can be reached. This provide dynamic routing protocols  the  capability  to  get used to logical network  topology changes, equipment failures or network outages ‘on  the fly'. 2. 3 Types  of Dynamic Routing Distance-Vector Routing Paths are calculated using Bellman Ford Algorithm by  a distance-vector routing protocol. RIPv1  and 2  and IGRP (Interior Gateway Routing Protocol) are examples  of distance-vector routing protocols. Earlier, distance vector protocols such as RIPv1 show classful behavior but newer distance vector protocols such  as RIPv2  and Enhanced  interior Gateway Routing Protocol (EIGRP) show signs of classless behavior. Distance-vector routing protocols †¢ Easy  and competent  in small networks †¢ Deprived convergence properties †¢ Facilitate in  the growth  of more complex but more scalable link-state routing protocols  for use  in large networks. Periodic copies  of  a routing table are passed from router  to router by distance vector routing  algorithms. †¢ Logical broadcast is the most commonly used  addressing scheme. Periodic updates are sent by routers running  a distance vector routing protocol even if  there  are no changes  in  the network. †¢ Complete routing table is included under  the periodic rou ting update in a pure distance vector environment. †¢ All known routes can be verified and changes can be made  by getting  a neighbor’s complete routing table based on simplified  information also called as â€Å"routing by rumor†. Fig: Distance Vector Routing Periodic routing updates are received from router A to router B in  the figure. Distance vector metric (such  as hop count) are added by Router B to each route learned from router A,  rising  the distance vector. Its own routing tables  are passed to its neighbor, router C. This process occurs  between directly connected neighbor routers in  all directions. The chief purpose  is  to decide  the top route  to  contain  in  the table when the routing table is updated by  a routing protocol  algorithm. Different routing metric is used to determine  the best route by each distance vector routing protocol. Metric value  is generated for each path through network by the  algorithm. Usually, the path is better if metric is smaller. Single characteristic  of  a path helps in calculation of metrics and combination of several path characteristics helps in calculation of more complex metrics. The most commonly used  metrics used by distance vector routing protocols are: Hop Count: Packet’s number  of passages throughout  the output port  of one router Bandwidth: Link’s data capacity Delay: Time necessary  to shift  a packet from starting place  to destination. Load: work load on  router or link. Reliability: each network link  bit error rate Maximum Transmission Unit (MTU):  the utmost message extent  in octets satisfactory  to  all links on  the path. Link-State Routing Packet-switched networks use link-state routing protocol  for computer communications. OSPF  and  IS-IS are its examples. A  topological database is built by the help of link-state routing that describes extra  precise  inter-network routes. Large networks use link state routing protocols and now used by most of the organization and ISP. Router performs the link-state protocol in  the network. A map  of  the connectivity  of  the network is constructed by every node in the form of graph showing node connection to other node is the basic concept  of link-state routing. The best next hop is calculated by each node  independently for every possible destination  in  the network. The routing table for the node is formed by  the collection  of best next hops. Fig: Link-State Routing To find out  the shortest path from itself  to every other node  in  the network an  algorithm is run by each node  independently over  the map. OSPF, EIGRP and Novell's NLSP (NetWare Link State Protocol) are the examples of link state routing protocol. IPX is only supported by Novell's NLSP. A partial map  of  the network is maintained by each router in this type  of routing protocol. Link state  advertisement (LSA)  is flooded throughout  the network when  a network link changes state (up  to down, or vice versa). The changes are noted and routes are re-computed by all  the routers  accordingly. Greater flexibility  and sophistication are provided by Link State Routing protocols than  the Distance Vector routing protocols. Overall broadcast traffic is reduced  and better decisions are made  about routing by taking characteristics such  as bandwidth, delay, reliability,  and load  into consideration,  instead  of taking  their decisions only on hop count. 3. ROUTING  ALGORITHMS 3. 1 Bellman-Ford  Algorithm: †¢ Also called as Label Correcting  algorithm †¢ Used for negative edge weight †¢ Same as Dijkstra's  algorithm †¢ In order to maintain distance tables, this algorithm is used by router †¢ Exchanging  information with  the neighboring nodes help to update information in the distance table †¢ All nodes  in the network is represented by the number  of data  in  the table The directly  attached neighbors are represented by the columns  of table and all destinations  in  the network are represented by the row. †¢ The number  of hops, latency,  the number  of outgoing packets, etc. are measurements in this algorithm. 3. 2 Dijkstra’s  Algorithm: †¢ Edsger Dijkstra  conceived Dijkstra's  algorithm †¢ Mostly used for routing †¢ Is a graph search algorithm †¢ The single-source shortest path problem  for  a graph is solved by this algorithm with non negative edge path costs †¢ The shortest path tree is produced as a output †¢ Helps in finding shortest route from one router to other A shortest-path spanning tree having route to all possible destination  is built by this algorithm for router †¢ The router using  the  algorithm  is  the source  of its shortest-path spanning tree 4. ROUTING PROTOCOLS Routing protocol describe the way of communication between routers which helps in the selection of routes between any two nodes on a network. Usually, knowledge of immediate neighbors is known by each router. This  information is shared by  a routing protocol to have routers the knowledge  of  the network  topology. Most commonly used Rout ing protocols are as follows: 4. RIP (Routing  information Protocol) †¢ dynamic  inter-network routing protocol †¢ used in private network †¢ routes are automatically discovered †¢ routing tables are built †¢ a Distance-Vector routing protocol †¢ uses Bellman-Ford  algorithm †¢ 15 hops are  allowed with RIP †¢ 180 sec is the hold down time †¢ Full updates are transmitted every 30 sec by each RIP router †¢ Works at network layer †¢ Prevent routing loops †¢ Hop limit †¢ incorrect routing  information are prevented from being propagated †¢ easy configuration †¢ no parameter required Two versions  of RIP are as follows: RIPv1: †¢ classful routing is used subnet information is not carried by periodic routing updates †¢ no support for VLSM (variable length subnet masks) †¢ Same network class have different sized subnet by the use of RIPv1 †¢ No router authentication †¢ Broadcast based and 15 is the maximum hop count A RIPv1 packet  format  is shown below: [pic]Fig: RIP packet  format Command:  determine whether  the packet  is  a request or  a response. A router send  all or part  of its routing table is asked by  the request. Reply  to  a request or regular routing update means the response. Routing table entries are contained in responses. Version number: RIP version used is specified. Potentially  incompatible versions can be signaled by this field. Zero: RFC 1058 RIP doesn’t use this field; it was  added to have backward compatibility provided to pre-standard varieties  of RIP. Address family identifier (AFI):   The  address family used is specified. Address-family identifier is contained in  each entry  to  specify  the category  of  address being particularized. The  AFI  for IP  is 2. Address:   The IP  address is particularized  for  the entry. Metric:  The number of inter-network hops traversed  in  the trip  to  the destination is indicated. 1  and 15  for  an applicable route, or 16  for  an unapproachable route. RIPv2: Developed  in 1994 †¢ Classless  inter-Domain Routing (CIDR) is supported †¢ Subnet  information can be carried †¢ Addition of MD5  authentication and Rudimentary plain text  authentication for the security of routing updates. †¢ Routing updates   are multicast to 224. 0. 0. 9 †¢ 15 is the maximum hop count A RIPv2 packet  format is shown below: [pic] Fig: RIPv2 packet  format Command:  determine whether  the packet  is  a request or  a response. A router send  all or part  of its routing table is asked by  the request. Reply  to  a request or regular routing update means the response. Routing table entries are contained in responses. Version number: RIP version used is specified. Unused: Zero is the value set. Address-family identifier (AFI):  The  address family used is specified. Authentication  information is contained in the remainder of the entry if  the  AFI  for  the initial entry  is 0xFFFF in  the message. At present,  simple password is the only  authentication type. Route tag: The methodology is provided  for distinguishing between  internal routes (learned by RIP)  and external routes (learned from other protocols). IP  address: IP  address is particularized  for  the entry. Subnet mask:  The subnet mask is contained  for  the entry. No subnet mask has been particularized  for  the entry if this field  is zero. Next hop: The IP  address  of  the next hop is indicated  to which packets  for  the entry should be  forwarded. Metric:  The number of inter-network hops traversed  in  the trip  to  the destination is indicated. 1  and 15  for  an applicable route, or 16  for  an unapproachable route. 4. 2 OSPF (Open Shortest Path First) †¢ A Link-State protocol †¢ used  for routing between routers belonging  to  a single  autonomous system †¢ link-state technology is used †¢   information  about  the direct connections  and links is communicated between the routers Identical database is maintained by each OSPF router for the description of   the  autonomous System’s  topology †¢ Calculation of a routing table by the construction of a shortest- path tree from this database. †¢ Routes are quickly recalculated in the face of topological changes †¢ equal-cost multi-path are supported †¢ Authentication of all OSPF routing protocol exchanges †¢ Designed for TCP/IP environment †¢ routing updates authentication †¢ IP multicast are utilized in sending/receiving  the updates †¢ routes IP packets based exclusively on  the target IP  address originate  in  the IP packet header Grouping of sets of networks †¢ IP subnets are flexibly configured †¢ Destination  and mask is available to the route distributed by OSPF The following figure shows  the packet  format used by OSPF: [pic]Fig: OSPF packet  format Version number:  the OSPF version used is specified. Type:  the OSPF packet type is identified  as one  of  the following: Hello: neighbor relationships are established and maintained. Database description:  the contents  of  the  topological database are described. Link-state request: pieces  of  the  topological database are request ed from neighbor routers. Link-state update:  a link-state request packet is responded. Link-state  acknowledgment:   link-state update packets are acknowledged. Packet length:  the packet length,  the OSPF header is specified. Router ID:   the source  of  the packet is identified. Area ID:   The  area of packet is identified. All OSPF packets  are  linked with  a single  area. Checksum:  the complete packet contents are checked  for  any harm suffered  in travel. Authentication type:  the  authentication type is contained. Authentication of  all OSPF protocol exchanges. Configuration of the  authentication type   on per-area basis. Authentication:   authentication  information is contained. Data: encapsulated upper-layer  information is contained. 5. WORKING 5. 1 Distance Vector Routing: The following methods show  the overall working  of  the Distance-Vector Routing: . There is no predefined route i. e. entire route for a particular destination is not known to any router. The port to send out a unicast packet is known by each router on the basis of destination address. Progressively the route is made and there is the formation of the route by the contribution of each router when it receives the packet. The optimal tree is not predefined in DVRP actually. No routers have knowledge for making an optimal tree. Slowly and gradually the tree is made. The tree is formed as soon as a router receives a packet; it is forwarded by router through some of the ports, on the basis of source address. Other down-stream routers make the rest of the tree. The formation of the loops must be prevented by this protocol. Duplications are also prevented in order to make the entire network receive only one copy. In addition to this, the shortest path from source to the destination is the path travelled by a copy. Inconsistencies occurring with Distance-Vector Routing: Incorrect routing entries are caused by slow  inter-network convergence which may bring inconsistencies maintaining routing information. .  The following example describes how  inconsistencies occur  in Distance-Vector routing: The entire figure describes the inconsistencies occurring with Distance-Vector Routing. Defining  a maximum  to prevent count  to  infinity: . With this  approach,  the routing table update loop is permitted by routing protocol until  the metric exceeds its maximum  allowed value. Fig: Defining  a maximum  to prevent count  to  infinity 6 hops are defined as the maximum  allowed value. When  the metric value exceeds 16 hops, we cannot reach network 10. 4. 0. 0 Routing Loops  in Distance-Vector Routing: A routing loop is said to be occurred if two or more routers have  false routing  information  representing that  a applicable path  to  an unapproachable d estination exists via other routers. Fig: Routing Loop Solutions  to eliminate routing loops Split horizon:  The information is not sent in the direction from where original information comes. The split horizon function is illustrated by the following figure Fig: Split Horizon Route Poisoning:  Routing loops are eliminated. The following figure provides  an example  of Route Poisoning: Fig: Route Poisoning In  addition  to split horizon, route poisoning  and holddown timers, poison reverse, holddown timers  and triggered updates  are other methods  to eliminate routing loops. 5. 2 Link-State Routing: The following methods show  the overall working  of Link-State Routing. Gathering of the neighbor  information continuously. Router answering to this protocol are broadcasted the list of neighbor  information, process known  as flooding. Soon, this  information is distributed to all routers on  the network. Flooding of the neighbor  information in case  of  a (routing-significant) change  in  the network. The best path can be calculated to any host on any destination network as everything  about  the network is known by every router. 6. ADVANTAGES  AND DISADVANTAGES Distance-Vector Routing Advantages  of Distance-Vector Routing: †¢ simple  and flat network †¢ No special hierarchical design is required. †¢ Implementation of hub-and-spoke networks †¢ No concern for worst-case convergence times  in  a network †¢ less memory  and processing power usage Disadvantages  of Distance-Vector Routing: †¢ Incorrect routing entries create inconsistencies in maintaining  the routing  information †¢ Rise of a condition count  to  infinity †¢ Occurrence of a routing loop †¢ Variable Length Subnet Masking (VLSM) or super netting is not supported †¢ multi-vendor routing environment is not supported Link-State Routing Advantages  of Link-State Routing: †¢ Paths are chosen via network by the use of cost metrics †¢ changes  in  the network  topology are reported to  all routers  in  the network quickly †¢   fast convergence times †¢ No occurrence of routing loops routing decisions are based on the most recent set  of  information †¢ Link-State protocols use cost metrics  to choose paths though  the network. The cost metric reflects  the capacity  of  the links on those paths. Disadvantages  of Link-State Routing: †¢ Topology database,  an  adjacency database,  and  a  forwarding database is required. †¢ a significant  amount  of memory  is required in large or complex networks †¢ significant  amount  of CPU power usage †¢ need of a strict hierarchical network design to reduce significant  amount  of CPU power usage †¢ network capability or performance is low to transport data . APPLICATION  AREAS Distance-Vector Routing: †¢ used in mobile, wireless and hoc networks (MANETs) †¢ used for mobile  ad hoc routing (Ad hoc On-Demand Distance Vector Routing) . Link-State Routing: †¢ used  in larger, more complicated networks †¢ Optimized Link State Routing Protocol (OLSR) designed for mobile, wireless and hoc networks 8. COMPARING DISTANCE-VECTOR  AND LINK-STATE ROUTING STRATEGIES †¢ Mostly, best path is determined by Distance Vector protocols, while bandwidth, delay, reliability  and load are considered to make routing decision by Link-State protocols Distance Vector protocols are simple and efficient where as Link-State protocols are flexible and sophisticated †¢ Routing  information Protocol (RIP v1  and v2)  and  interior Gateway Routing Protocol (IGRP developed by Cisco) are Distance Vector protocols where as OSPF, EIGRP, Novell's NLSP (NetWare Link State Protocol) are Link-State protocols †¢ Notion of a distance is not required in Distance Vector routing where as Link-State routing is based on minimizing some notion of distance †¢ Uniform policies are not required at all routers in Distance Vector routing but uniform policy is required in Link-State routing Router have little knowledge about network topology in Distance Vector routing where as routing domain has excessive knowledge about topology information in Link-State routing 9. CONCLUSION Introduction, working, use, advantages and disadvantages of Distance-Vector  and Link-State routing  are explained  in this project. Bellman  ford  and Dijkstr a’s  algorithm are also discussed. This project describes the popularity of Distance-Vector  and Link-State routing  because of their complex, sophisticated, flexible features in recent computer networking field..

Ethics in Group Counseling Essay

Ethics is also termed as philosophy, which is a branch of philosophy that includes the systematizing, defending and recommending concepts of the right and wrong conducts. There are three major field of study within ethics that involves Metha-ethics that concerns with the theoretical meaning that are used to reference of moral propositions and their truth-values that can be determined, the normative ethics that concerns with the practical means of determining a moral course of action. Lastly is the applied ethics that concerns with what an individual is obligated to do in an appropriate situation or at a particular domain. This research paper can explore the various ethical issues that arise during a group session. There are certain ethical conditions that should be upheld in the panel session from the initial stages of the formation of the group to the working phase of the group. The group leader should be able to uphold definitive ethical, moral codes. Thus, the paper can enlighten the various ways that a group leader should act in the midst of a conflict as well as confidentiality within the group. In focusing on the ethical responsibility of members of a group it necessary to concentrate on the following topics that are explained as follows. Ethical Responsibility Ethical responsibility is the duty that follows the moral correct paths. The ethical responsibilities of the group entail that each member has the responsibility to be honest with other group members so that to be able to make decisions in the group sessions. It is necessary that there must be a clear moral standard from the outset. For instance, create and enforce a code of conduct that ensures that group members are treated fairly to avoid the appearance of unethical behaviors. The group leader should be able to ensure that there is transparency when dealing with group members. Also the ethical that you might feel you have, you should consider how the group‘s morality could affect the group productivity. Ethical Communication in  Small Groups Dealing with small groups work we major on focusing on getting the job done while maintain a reasonable relationship among group members. Ethics in a small group involve three levels whereby we have the individual group member, the group, and the group environment. Thus using ethics in a small group, it enhances the moral aspects of the group interaction. The ethical communication enables the human worthiness and the dignity by fostering the truthfulness, fairness, responsibility and enhancing the personal integrity. Thus, ethical communication in small groups is used for caring and accountability for oneself and other group members. Some other principles that are more applicable to small group communication involves: the truthfulness ,accuracy, honesty and provision of the integrity of communication, endorse freedom of expression and diversity of perspective together with the tolerance of dissent to be able to achieve the informed and responsible for making decision making fundament al to a civil society. Unethical communication causes threats to the quality of all communication and the consequently of the well-being of the individuals and the society. In addition, as a manager be able to create a promotion communication climate of caring and mutual understanding that exist with respect and uniqueness needs and characteristics of individual’s communicator and be able to accept responsibilities for the short and long-term consequences. Ethics is more easily discussed than putting into real practice as demonstrated by San Jose Mercury stated that the increasing trend in an organization to integrate a code of ethics for daily activities. Ethical communication requires that an effective critical thinking skills, recognizing the importance of the diverse perspectives and respect for the well-being of self and other taking the responsibility for individual and the group actions and reflecting on the choices the group members can make.. Ethics in Group Counseling During the session of group counseling, consist of the psychiatric care that many patients meet more at therapist at a time. Each group has different topics that they wish to tackle for the growth that enhances the distinction of the financial issue that an individual counseling can be able to create.  The financial tights limit the delivery of the community agency for individual counseling. Focusing on the Barlow Research stated that group-counseling sessions are more successful than the individual ones. Thus by evaluating the various facts that the states that group counseling benefit more patients at one time as well as being used more than the individual counseling. Through McCarty studies, they were able to answer questions that were concerning the indicator of the importance of group counseling as compared to individual counseling. They described the positive aspect of the group counseling as well as stipulating the negative side of the group counseling. The positive results of the group counseling involve the developing of the social skills among the group due to a safe environment in which the group members can share their thoughts feelings and ideas. In addition, the aspect that concerns the patients to be able to receive a positive feedback from their own group mate as well as various perspective on a similar issue, the group members can enhance to learn new ways in order to see a particular problem. Considering the negative aspects of the group therapy involves the clients were not speaking during a group therapy session since they are too shy to share their views in the front of other individuals. The other aspect consists of group settings and the benefits that are more important in the individual setting. The other aspect involves the issue of time which is limited and the group and the group sessions do not have flexibility date setting, thus any session that is placed by the counselor should be mandatory and set in the panel settings Characteristics of an Ethical Leader During the group, counseling session there must be proper individuals that are trained and equipped in an efficient manner to lead during the session. The individual that lead the session is considered as a leader who addresses the various issues that arise during the session. Some research that was done by Kalshoven and Hugh wanted to determine the individual characteristics that a leader requires that to lead an effective a counseling session. They stated that the major features of the ethical leader were both agreeable and conscientious. In their study, they proposed that a leader possess the traits whereby the manager requires the features to ethical standards in the counseling session. Another study that was done  by Riggio stated that the two important moral emotions that a leader must possess is the empathy for their clients as well as compassion for the individual wellbeing. Jacobs in his literature book stated strongly that leaders in group counseling must be at a state to have skills in organizing and planning the counseling sessions in order to keep orders and maintain the structure of the group. As a counselor, he/she must be able to answer the challenging question that can arise and ensure a complete knowledge understanding. The counselor should be able to understand the counseling theory to enhance proper training that can assist in the implementation of the ethical foundations. Primary Planning The counselor should be given proper training in advance with the aim of ensuring an effective ways in the counseling session. Thus, the counselor is required to attend a counseling session to have the insight to the future issues and the dilemmas they might face. Thus in the participation of that session it allows them to coin and gain the understanding and the perspective. According to Corey, the study suggested that for a minimum of 10 hours of observation and taking notes of the session. This paramount process enables the counselor to be involved in ethical decision-making and well-organized knowledge. The area of jurisdiction must be satisfactory to the counselor by screening the patients before joining the group, in a move to avoid disruption and hurting the whole group at the end of the process. During the screening session, it entailed answering, unsettled questions at the stipulated time. Further, there must be an alignment with the purpose of the group as well as make the t eam leader who will be able to meet the needs of the client as much as possible. The process of planning entails alignment of the client and counselor so that the customer will be free to the counselor to give out and share the deep and times emotions. Once the process of screening is finished, there is an informed consent section. The client that discusses what issues they will be able to encounter during the counseling sessions. The preliminary role of these step, it enables the disclosure of information to the group members to inform the clients the pros and cons of joining the group. It is also suggested that the informed consent section has potential risks that the members might face while in a group therapy session. It is well explained by the Corey survey, which  states that some clients might experience their privacy, which is a guarantee that the other member will respect their privacy The informed consent is usually presented to customers in a written and oral manner so that the clients can be completely informed of what they will encounter so that to avoid surprises when the sessions begin. In the consent, the clients are required to contain the role expectations of colleagues and the leader, the policies and the procedures that are governing the mandated group, the documentation requirements and the procedures for the consultation between group leader and the group members. Open or Closed Group It is stated that it beneficial to choose the group counseling since it is better to make a decision. There are supportive reasons to those suggestions that cause the more efficient counseling method. At first, the counselor can reach out a larger group of people. Instead of focusing much time on one person, we assist the lives of many other than concentrating on a single individual. Through group counseling, it benefits both the client and the counselor since it creates a great way to build a community and stimulate the counseling session. Secondly, the group counseling is more effective since the counselor can build his/her leadership skills this is created because of the counselors can encounter various problems and through making mistakes, they can become stronger and efficient leaders as the session progresses. The third reason it beneficial for both the counselor and the group since the counselor can be able to raise his revenue through obtaining a group counselling session as compared to one person and the member of the group can save money as well. Also, the cost of individual counseling is expensive as compared to the panel session The last reason to consider the group session is such that it is much effective since the counselor can continually learn experiment and strive to make a difference in the life of a client. Group Processes According to Corey, he stated that in-group counseling the issue of conflict within counseling in a group is common. The topic at times is inevitable within the group when you have personal clashing and perspectives within the group. However, according to Jacobs warned that the issues that are dealing with the denominator, negative member, and the overwhelming chronic talker,  and some issues of asking a member to leave are expected to arise in the counseling setting. Thus, it is important to note that some of the problems do not solely happen in the group setting but may happen as well in the personal counseling setting session. Therefore, the most important issue about conflict is not the conflict itself but how the counselor will be able to deal ethically with the issue when it arises. Thus, a great tool that one should use is to list all the conflict issues that they may arise and then gain the insight as to how to solve the issue ethically. In addition, it is desirable to seek advice from other colleagues about the tactics that may be used in the sessions to resolve the issues. The counselor is supposed to develop either an open or closed session group setting. Whereby in the public group setting session the members of the group are allowed to go and come at their own pleasure. Nevertheless, in the closed group sessions the member is required to be a continuance of the attendance throughout the designated sessions. Close relationship should be built on the counselor as well as a close relationship in-between the other group members as stated by the Forsyth who stated that the aspect of cohesion when conducting the issue of evaluation the leader must activity gain the virtue to keep the group in a cohesiveness mode. The ethical questions that arise from a closed group therapy sessions show the ability for the client to leave at any point. According to Corey, stated that a member should choose to leave the counseling session then that must openly let the group and the counselor must know that they wish to exit and the reason they exiting the group. It can be done in order not to harm the homeostatic environment of the group. Thus when the team member does not do this, it can harm the rest of the group and disrupt the growth process that there is among the group. It leads to a critical ethical topic that must be addressed in the every counseling group that is the issue of com fidelity. As a counselor it safe to uphold the confidentiality of the group members, this can lead to the group members being shy about sharing certain area their lives. There are certain aspects that the counselor can break in the confidential barriers While in the individual counseling, it involves talking personal feeling thoughts and behaviors and the things that are troubling and spend time in talking about the individual relationship with others. Your counselor will work with you to be able to set goals and the things you require to be accomplished  together. The counselor assists you to develop different strategies that can assist you to be able to reach the personal goals. In some cases, it could mean changing the pattern of thinking, learning new skills, changing the behaviors, and shifting the way you feel and express the emotions. References American Psychological Association. Publication manual of the American PsychologicalAssociation (Current ed.) Washington, DC: American Psychological Association. Association for Specialists in Group Work. (2007). Best Practice guidelines 2007 revision. Retrieved from http://asgw.org/pdf/Best_Practices.pdf Baurhan, S., Smith, J., Steen. S.(2008). The preparation of the professional school counselors for group work. The Journal for Specialists in Group work, 33(3), 253-269 DOI 10.1080/01933920802196120 Booker, B., Henfield M., Steen S. (2014).The achieving success everyday group counseling model: implication for professional school counselors. The Journal for Specialists in Group work, 39(1), 29-46. DOI 101080101933922.2013.861886 Brigman, G., Campbell,C.(2005). Closing the Achievement Gap: A structured approach to group counseling, The Journal for Specialists in Group work, 30(1) ,67-82. DOI 10.1080/01933920590908705 Corey, G., Corey, M., & Haynes, R. (2014). Groups in action: Evolution and challenges (2nd ed.). Belmont, CA: Brooks/Cole. ISBN: 9781285095059 Cornish, M., Post, B., & Wade, N. (2014). Religion and spirituality in group counseling: beliefs and preferences of university counseling center clients. Group Dynamics: Theory, Research, and Practice. 18(1), 55-68 DOI 10.1037/a0034759 Hartman, D., & Zimberoff,D.(2012). Ethics in heart-centered therapies. Journal of Heart Centered Therapies, 15(1). Jacobs, E. E., Masson, R. L., Harvill, R. L., & Schimmel, C. J. (2012). Group counseling: Strategies and skills (7th ed.). Belmont, CA: Brooks/Cole. Petrini, C. (2013). Professional ethics between the individual and society. Physical TherapyReviews, 18(2), 142-143. Stuckton, R. (2010). The art and science of group counseling: The Journal for Specialists in Group work, 35(4), 324-330. DOI 101080101933922.2010.515904

The study of product development as the core in transforming medium Literature review

The study of product development as the core in transforming medium size businesses into large multi-national companies - Literature review Example Six different theoretical frameworks have been formulated to explain organizational transformation. They include life cycle, evolutionary, dialectical, teleological, social cognition and cultural approaches to change. Evolutionary models include social evolutionary and biological models. Here it is assumed that situational variables, circumstances and environment faced by each organization determine the change in each organization. Here very little role is given to people in determining the direction of change and change is considered as very slow process.The later version of these models assume managers having ability to respond and anticipate changes.Based on this theory, mergers are considered as a form of organizational transformation to respond to forces outside an organization. Through mergers, there can be overall change in the organizational structure of an existing corporation in a mature product market as a part of its growth strategy to survive in the industry. This happens when the results of the past investment decisions will not be able to produce assets or resources that can finance the activities. Thus, the process of mergers and acquisitions involves the reduction in the resources as a part of the reallocation to new growth areas. In the case of mergers, the firms receive a surplus than they obtain individually through the economies of scale. This surplus increases when the product demand is high and falls when it is low. ... Thus, the process of mergers and acquisitions involves the reduction in the resources as a part of the reallocation to new growth areas. In the case of mergers, the firms receive a surplus than they obtain individually through the economies of scale. This surplus increases when the product demand is high and falls when it is low (Lambrecht and Myers, 2004). In addition to these, during the economic downturns, the unproductive assets existing needs to be sold off to shareholders. The hesitancy of the management in doing so results in takeover activities (Maksimovic and Phillips, 2000).The takeover results in selling the unproductive assets to the acquirer of the firm and thereby reaching the proceeds of the takeovers to the shareholders. Thus mergers result in cost savings and revenue enhancement. The main criticisms of the evolutionary models include their base on mathematical field and not human fields, failure to explain change as a social phenomena, difficulty in linking environme ntal and organizational variables, etc(Collins,1998). The teleological models see change as the phenomenon resulting from the leaders’ perception of necessity to change. Here change is assumed to be dependent on internal decisions in accompany instead of external changes. This model gives the central role to leader and considers leader as a rational agent and change is explained on the basis of scientific management tools. Thus these models are considered as more human than the evolutionary models (Brill and Worth, 1997). This theory focuses on the need for leaders to motivate the followers rather than imposing their behaviour on followers (Trice and Beyer,

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Exam questions - Essay Example The use of technology enhanced the invention of machines that increased the productivity of workers. Technology also enhanced the growth of enterprises to large scale producers. Food products were, therefore, produced in masses that fed the society. End products were produced at cheaper costs and less time than in the recent times. Due to the changes the standards of living of the citizens were improved and also recorded a social change. People moved from suburb areas to the cities thus land was left vacant for production of food. At times people who lived in the urban areas and worked in the factories lived in filthy conditions due to overpopulation in the urban areas (Goloboy 2008, p.58). Increased food production is essential for industrialization in any state. Labor is essential for the growth of industries and the state to maintain a sufficient number of laborers it needs to device ways of producing enough food to feed the population. Industrialization in Europe was due to sustainable methods of food production. Industrialization in Britain occurred between 1750 and 1830. Britain had perfect conditions for industrialization to occur. Mineral resources, labor and technology, were present in Britain and facilitated the industrial revolution (Goloboy 2008, p.67). Britain had made the use of wood as a source of heat for a long time it thus had plenty of coal deposits remaining and were used in new ideas. The source of heat was used in the industries. Britain was also a colonial master of many nations, the raw materials that could not be found in Britain could be imported from the colonies at cheap costs. The colonies also provided markets for the end products. Other factors that contributed to industrialization in Britain were the plenty natural resources in Britain. The government of Britain also improved the transportation in Britain enhancing the movements of finished goods and raw materials. The growing population in

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The risks associated with ionising radiation in medical imaging practice, and the precautions required to protect aginst them - Assignment Example Due to the in effective training and inadequate awareness given to the staff as well as the patients they are exposed to more unnecessary radiation (Koenig et al 2001). Ionizing radiation is used in applications such as medical imaging in the hospitals and to perform diagnostic imaging. In the medical imaging, the most common forms of the ionizing radiations are the gamma rays and the x-rays. These medical imaging practices are important in the medical field because of the determination of the diseases and different injuries in the human body. However, aside from these benefits and life saving tool, these ionizing radiations has certain limits and conditions to be applied on the patients and people. The reason for this is due to the fact that high doses of these ionizing radiations are responsible for the formation of cancers. The ionizing radiation in the medical imaging is found to be one of the most important discoveries of the medical science. Even with the use of the new technol ogy, the equipments are highly capable of posing high radiation doses if the treatment procedure is not well maintained and followed (ICRP 2000). Whereas there is a strong debate going that the usage of these ionizing radiations may cause genetic mutations and cancers. As it is well known that there is no such dose below which there is no risk of any harm to the exposed one or a zero risk (ICRP 1990). So it is important to avoid the exposure to these ionizing radiations but how can this be possible. Of course someone that needs medical attention and for different diagnosis, one has to go through these treatments, but on the first hand the primary cure is to improve the life styles and the determinants that may cause the health damage to be improved. Below is the typical effective dose from x-ray radiation. Exam Effective Dose mSv (mrem)1 Chest (LAT) 0.04 (4) Chest (AP) 0.02 (2) Skull (AP) 0.03 (3) Skull (Lat) 0.01 (1) Pelvis (AP) 0.7 (70) Thoracic Spine (AP) 0.4 (40) Lumbar Spine (A P) 0.7 (70) Exam Effective Dose mSv (mrem)2 Mammogram (four views) 0.7 (70) Dental (lateral) 0.02 (2) Dental (panoramic) 0.09 (9) DEXA (whole body) 0.0004 (0.04) Hip 0.8 (80) Hand or Foot 0.005 (0.5) Abdomen 1.2 (120) By improving our health status and also improving our physical mental and social states, we can avoid these threats even at the first place to be exposed by such ionizing radiations even for the diagnosis. However the main concern regarding the ionizing radiation is the induced cancer among the young children from the CT scans. As the young children are more susceptible to get the cancer as compared to the elders, so the more controlled experiments and discoveries are to be made in order to avoid this risk of more cancer due to these ionizing radiations. But another debate that why the need for these medical imaging are increasing day by day even with the more sophisticated technology and new era of research, does that means that science failed to improve the health st atus of the world’s population even with the advancement. The answer could be controversial as the health is comprehensive phenomena and does not depend on one facto but many. So there is a need to improve the

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Heart of Darkness - Essay Example The Conrad’s story seems to unfold the dark moments that might be frightening to the readers, however it does point out the benefit of civilisation. For instance, the story accounts for the civilisation that transformed the one time dark country Britain (Conrad 36). The tradition brought to the Dark Continent by the white man did not sound impressive to the blacks, but it has transformed the community to illuminate better practices, which they did not acknowledge in the first place. The modern methods of cultivation are good news to people that knew little about the existence of modern method of increasing agricultural yields (Conrad 56). Another important instance that is impressing in the novel is the modern education system. The system enabled the continent to transform from its traditional systems, which produced little in terms of industrialisation as well as globalisation. Education was the only viable way through the Dark Continent could receive the new light. Conrad observes that Africans embraced the old technology in doing their things. It did not appear to them that the society could apply scientific ways of doing the daily activities. The fruit of introduction of science to the dark part of the world brought light that is shining in this region. The roads that the colonial masters developed did not only helped the colonial masters to exert their autocratic rule in the dark world, but also enabled the blacks to enjoy trading their goods. However, the novel gives a fiery tale of inhumanity projected to the innocent blacks in the name of civilisation. The verbal abuse to the Africans by the colonial masters is disgusting. It is arguable that better ways were applicable in introducing modernity (Conrad 125). The author described the killing of the Africans as if they did not have the right to live or to chose what is good for their lives or not. The white figures did not regard blacks as human beings moreover; they did

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