Trading process Looking for a market

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فهرست عناوین اصلی در این پاورپوینت

● Towards Decentralized Resource Allocation for Collaborative Peer-to-Peer Learning Environments
● Summary
● Introduction
● Architecture
● Trading process
Looking for a market
● Trading process
Accessing the market
● Trading process
Looking for a market
● Trading process
Accessing the market
● Trading process
Making a deal
● Settlement Phase
● Agreement Specification
● Contract
● Payment Protocol
● Validation
● Conclusions

نوع زبان: انگلیسی حجم: 1.07 مگا بایت
نوع فایل: اسلاید پاورپوینت تعداد اسلایدها: 23 صفحه
سطح مطلب: نامشخص پسوند فایل: ppt
گروه موضوعی: زمان استخراج مطلب: 2019/06/14 11:46:06

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عبارات مهم استفاده شده در این مطلب

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., resource, market, vo, agreement, seller, prospector, element, xsd, payment, service, name,

توجه: این مطلب در تاریخ 2019/06/14 11:46:06 به صورت خودکار از فضای وب آشکار توسط موتور جستجوی پاورپوینت جمع آوری شده است و در صورت اعلام عدم رضایت تهیه کننده ی آن، طبق قوانین سایت از روی وب گاه حذف خواهد شد. این مطلب از وب سایت زیر استخراج شده است و مسئولیت انتشار آن با منبع اصلی است.

http://dpcs.uoc.edu/lazaro/res-slides.ppt

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عبارات پرتکرار و مهم در این اسلاید عبارتند از: ., resource, market, vo, agreement, seller, prospector, element, xsd, payment, service, name,

مشاهده محتوای متنیِ این اسلاید ppt

مشاهده محتوای متنیِ این اسلاید ppt

towards decentralized resource allocation for collaborative peer to peer learning environments xavier vilajosana daniel lázaro and joan manuel marquès universitat oberta de catalunya summary introduction architecture trading process settlement phase agreement specification contract payment protocol validation conclusions introduction collaborative e learning groups use virtual learning environments provided by the university. tools available in internet either for free or paying. limitations learning institutions have to estimate the resources needed for peak situations with the resulting over dimension of the system different systems do not share resources so in the same university some systems may be overloaded while others are underutilized ad hoc collaborative groups are only partially supported because the tools and resources available to them are restricted to university capacity and policies introduction virtual organizations can gather the resources and interests of their members. examples a faculty department. a group doing a collaborative activity. while a vo may lack resources other computers may have surplus resources. →inter vo resource allocation markets allocate resources efficiently. promote incentives to resource owners to provide or trade their resources. a centralized approach. introduction we developed dymra a decentralized resource allocation system based on markets that allows inter vo resource allocation. specially designed for dynamic and peer to peer environments dynamically reallocate resources and services that manage the overall system. many local ad hoc markets are created at will and run as services within the vo. introduction dymra is built on top of lacolla a peer to peer middleware that allows a group of users scattered across the internet to share resources in a cooperative manner allows the deployment of stateless services using the resources provided by the members of the vo. dymra components are deployed as services in lacolla middleware. introduction b and c can sell access to their resources to a obtaining benefits for their members virtual currency real money or something else . vos b and c may have a surplus of resources at the moment. at a time the vo a may require more resources than available to carry out their activities. architecture prospector finds suitable markets to obtain the desired resources. seller offers the aggregated surplus of resources of the vo in a suitable market. pool service controls access of the vo members to external resources. sale handler controls external access to the resources of a vo. accounting service monitors the resources available in a vo and decides when to start a trading process. market it mediates the trading of resources between vos. market directory contains an index of existing markets and their locations. architecture all components except the market directory md are deployed as services inside a vo using lacolla. the md is not part of a vo but an external service which is known and can be accessed by all groups. possible implementations centralized index. dht distributed among the vos. trading process looking for a market ۱a. the accounting service detects that the resources are below a certain threshold and contacts the prospector to acquire such resources. ۲a. the prospector looks for a suitable market in the market directory. trading process accessing the market ۳a. the market directory sends the prospector a list of markets which suit the specified needs. ۴a. the prospector chooses one of the markets of the list. if there is no suitable market it creates a new one. the prospector sends its bid. trading process looking for a market ۱b. the accounting service detects that the resources are above a certain threshold and contacts the seller to sell the surplus resources. ۲b. the seller looks for a suitable market in the market directory. trading process accessing the market ۳b. the market directory sends the seller a list of markets which suit the specified needs. ۴b. the seller chooses one of the markets of the list. if there is no suitable market it creates a new one. the prospector sends its bid. trading process making a deal ۵. the market makes an agreement and notifies the sale to both the prospector and the seller. ۶. the seller starts a sale handler which is deployed in its vo and mediates the use of the resources. ۷. the prospector informs the pool about the resources bought. settlement phase agreement payment agreement the market makes an agreement between the buyer and the seller. market sends the agreement to the prospector and seller after clearing. payment two payment policies paybefore requires the execution of the payment protocol before using the acquired resources. payafter does not require the payment until the resources have already been used. the settlement phase is carried out after the clearing phase once the market has determined the set of winners. the settlement phase is constituted by two main process the agreement is the phase where prospector and seller agree about the conditions to allocate the resource.. market sets into the agreement object information such as the final price or the location of the seller prospector . this information is retrieved from the initial bid. the payment phase is done once the agreement object has been received by the seller and prospector. the seller is responsible of creating the contract object specifying the pricing policy and the payment location as well as the credentials to access the resource. in dymra we defined two payment policies namely paybefore requires the execution of the payment protocol before using the acquired resources. payafter does not require the payment until the resources have already been used. agreement specification as an xml encoded schema. xsd element name agreement type agreementtype xsd complextype name agreement type xsd sequence xsd element ref resource minoccurs ۱ maxoccurs ۱ xsd element ref time minoccurs ۱ maxoccurs ۱ xsd element ref price minoccurs maxoccurs ۱ xsd element ref partnerlocation minoccurs maxoccurs ۱ xsd sequence xsd complextype the agreement is a composition of the following elements agreementtype that specifies the main features of the traded resource such as resource description time price and location. contract complextype name contract complexcontent extension base xs agreement sequence element name currency type xsd string element name accountid type xsd string element name credentials type xsd string element name paymentlocation type locationtype element name accesslocation type locationtype element name paymentpolicy type paymentpolicytype sequence extension complexcontent complextype the contract is an extension of the …

کلمات کلیدی پرکاربرد در این اسلاید پاورپوینت: ., resource, market, vo, agreement, seller, prospector, element, xsd, payment, service, name,

این فایل پاورپوینت شامل 23 اسلاید و به زبان انگلیسی و حجم آن 1.07 مگا بایت است. نوع قالب فایل ppt بوده که با این لینک قابل دانلود است. این مطلب برگرفته از سایت زیر است و مسئولیت انتشار آن با منبع اصلی می باشد که در تاریخ 2019/06/14 11:46:06 استخراج شده است.

http://dpcs.uoc.edu/lazaro/res-slides.ppt

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