This is a solution to the editors puzzle from Issue 7.2 of SIGecom Exchanges. The puzzle is about predicting what products one can expect to see in a market with given positive and negative synergies between products. The full puzzle can be found online at the SIGecom website [Conitzer 2008].
{"title":"Solution to exchanges 7.2 puzzle: strategically choosing products to release","authors":"Troels Bjerre Søensen","doi":"10.1145/1486877.1486890","DOIUrl":"https://doi.org/10.1145/1486877.1486890","url":null,"abstract":"This is a solution to the editors puzzle from Issue 7.2 of SIGecom Exchanges. The puzzle is about predicting what products one can expect to see in a market with given positive and negative synergies between products. The full puzzle can be found online at the SIGecom website [Conitzer 2008].","PeriodicalId":56237,"journal":{"name":"ACM SIGecom Exchanges","volume":"111 1","pages":"13"},"PeriodicalIF":1.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76675041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Although many materials have been used for osseous wound repair, no agent currently available provides the surgeon with a predictable level of bone regeneration. Because they do not elicit elicit immunologic responses, and because of the disadvantages of obtaining donor bone, ceramic compositions such as phosphate-bonded alumina and similar ceramics have been investigated as possible bone substitutes capable of promoting bone growth. Since ceramic tricalcium phosphate is biodegradable it has been the subject of considerable research. Despite the research effort, the use of tricalcium phosphate ceramic materials in the regeneration of bone is still subject to improvement. A distinctive form of ceramic beta tricalcium phosphate, modified to augment bone regeneration is provided herein. It is readily implantable in a bone cavity to promote formation throughout the cavity of new bone to replace that lost through trauma, disease, respective surgery, and birth defects.
{"title":"A Note on Different Approaches to Index Number Theory","authors":"M. Veelen, R. Weide","doi":"10.1257/AER.98.4.1722","DOIUrl":"https://doi.org/10.1257/AER.98.4.1722","url":null,"abstract":"Although many materials have been used for osseous wound repair, no agent currently available provides the surgeon with a predictable level of bone regeneration. Because they do not elicit elicit immunologic responses, and because of the disadvantages of obtaining donor bone, ceramic compositions such as phosphate-bonded alumina and similar ceramics have been investigated as possible bone substitutes capable of promoting bone growth. Since ceramic tricalcium phosphate is biodegradable it has been the subject of considerable research. Despite the research effort, the use of tricalcium phosphate ceramic materials in the regeneration of bone is still subject to improvement. A distinctive form of ceramic beta tricalcium phosphate, modified to augment bone regeneration is provided herein. It is readily implantable in a bone cavity to promote formation throughout the cavity of new bone to replace that lost through trauma, disease, respective surgery, and birth defects.","PeriodicalId":56237,"journal":{"name":"ACM SIGecom Exchanges","volume":"9 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78771344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-01-01DOI: 10.1080/0893569032000091672
Inbal Talgam-Cohen, S. Weinberg
This issue of SIGecom Exchanges contains a letter from the SIGecom executive committee, the job candidate profiles for 2021, four research letters and a short note.
{"title":"Editors' introduction","authors":"Inbal Talgam-Cohen, S. Weinberg","doi":"10.1080/0893569032000091672","DOIUrl":"https://doi.org/10.1080/0893569032000091672","url":null,"abstract":"This issue of SIGecom Exchanges contains a letter from the SIGecom executive committee, the job candidate profiles for 2021, four research letters and a short note.","PeriodicalId":56237,"journal":{"name":"ACM SIGecom Exchanges","volume":"18 1","pages":"1 - 1"},"PeriodicalIF":1.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0893569032000091672","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59448422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The CrossFlow architecture provides support for cross-organisational workflow management in dynamically established virtual enterprises. The creation of a business relationship between a service provider organisation performing a service on behalf of a consumer organisation can be made dynamic when augmented by virtual market technology, the dynamic configuration of the contract enactment infrastructures, and the provision of fine-grained service monitoring and control.Standard ways of describing services and contracts can be combined with matchmaking technology to create a virtual market for such service provision and consumption. A provider can then advertise its services in the market and consumers can search for a compatible business partner. This provides choice in selecting a partner and allows the deferment of the decision to a point in time where it can be made on the most up-to-date requirements of the consumer and service offers in the market. The penalty for deferred decision making is the time to set up the infrastructure in each organisation for the dynamically established contract. Thus, a further aspect of CrossFlow was to exploit the contract in the dynamic and automatic configuration of the contract enactment and supervision infrastructures of the respective organisations and in linking them in a dynamic fashion. The electronic contract, which results from the agreement between the newly established business partners, completely specifies the intended collaboration between them. This includes fine-grained monitoring and control to allow tight co-operation between the organisations.
{"title":"CrossFlow: integrating workflow management and electronic commerce","authors":"Y. Hoffner, Heiko Ludwig, P. Grefen, K. Aberer","doi":"10.1145/844309.844311","DOIUrl":"https://doi.org/10.1145/844309.844311","url":null,"abstract":"The CrossFlow architecture provides support for cross-organisational workflow management in dynamically established virtual enterprises. The creation of a business relationship between a service provider organisation performing a service on behalf of a consumer organisation can be made dynamic when augmented by virtual market technology, the dynamic configuration of the contract enactment infrastructures, and the provision of fine-grained service monitoring and control.Standard ways of describing services and contracts can be combined with matchmaking technology to create a virtual market for such service provision and consumption. A provider can then advertise its services in the market and consumers can search for a compatible business partner. This provides choice in selecting a partner and allows the deferment of the decision to a point in time where it can be made on the most up-to-date requirements of the consumer and service offers in the market. The penalty for deferred decision making is the time to set up the infrastructure in each organisation for the dynamically established contract. Thus, a further aspect of CrossFlow was to exploit the contract in the dynamic and automatic configuration of the contract enactment and supervision infrastructures of the respective organisations and in linking them in a dynamic fashion. The electronic contract, which results from the agreement between the newly established business partners, completely specifies the intended collaboration between them. This includes fine-grained monitoring and control to allow tight co-operation between the organisations.","PeriodicalId":56237,"journal":{"name":"ACM SIGecom Exchanges","volume":"2 1","pages":"1-10"},"PeriodicalIF":1.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1145/844309.844311","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64168223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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