Journal articles: 'Service quantification'

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Hammami, Wiem, Ilhem Souissi, and Lamjed Ben Said. "A New Fuzzy-Based Approach for Anonymity Quantification in E-Services." International Journal of Information Security and Privacy 8, no. 3 (July 2014): 13–38. http://dx.doi.org/10.4018/ijisp.2014070102.

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In online services, making anonymous transactions is a crucial need in order to ensure the user's trust towards a particular service. In this context, anonymity quantification is required to provide at which level the e-service respects the user privacy regarding the link between his/her identity and actions. Most of the existing researches are limited to the anonymity quantification in a static way and based, mainly, on the user's set size. In this paper, the authors propose a new multi-agent based approach for anonymity quantification in e-services considering dynamic and mobile environment's characteristics. The authors' quantification is based on the fuzzy logic. It is based not only on the anonymity set size, which is always known in advance, but also on a set of other criteria such as the number of users and the priori and posteriori knowledge about internal and external attackers of an e-service. The carried out experimentations show competitive and better results when compared to other recently proposed anonymity quantification.

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Burkhard, Benjamin, Marion Kandziora, Ying Hou, and Felix Müller. "Ecosystem service potentials, flows and demands-concepts for spatial localisation, indication and quantification." Landscape Online 34 (June 2, 2014): 1–32. http://dx.doi.org/10.3097/lo.201434.

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The high variety of ecosystem service categorisation systems, assessment frameworks, indicators, quantification methods and spatial localisation approaches allows scientists and decision makers to harness experience, data, methods and tools. On the other hand, this variety of concepts and disagreements among scientists hamper an integration of ecosystem services into contemporary environmental management and decision making. In this article, the current state of the art of ecosystem service science regarding spatial localisation, indication and quantification of multiple ecosystem service supply and demand is reviewed and discussed. Concepts and tables for regulating, provisioning and cultural ecosystem service definitions, distinguishing between ecosystem service potential supply (stocks), flows (real supply) and demands as well as related indicators for quantification are provided. Furthermore, spatial concepts of service providing units, benefitting areas, spatial relations, rivalry, spatial and temporal scales are elaborated. Finally, matrices linking CORINE land cover types to ecosystem service potentials, flows, demands and budget estimates are provided. The matrices show that ecosystem service potentials of landscapes differ from flows, especially for provisioning ecosystem services.

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Paputungan, Irving Vitra, Akmal Kurniadi Denna, and Devi Rachmawati. "Towards Service Level Agreement Quantification on Service-Based Computing." Jurnal Ilmiah Teknik Elektro Komputer dan Informatika 8, no. 2 (August 17, 2022): 282. http://dx.doi.org/10.26555/jiteki.v8i2.23629.

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Arai, T., and Y. Shimomura. "Service CAD System - Evaluation and Quantification -." CIRP Annals 54, no. 1 (2005): 463–66. http://dx.doi.org/10.1016/s0007-8506(07)60145-0.

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Briaud, Stéphanie. "La sociologie et la quantification au service d’Isis." Cahiers d'histoire 31, no. 2 (November 6, 2013): 9–32. http://dx.doi.org/10.7202/1019282ar.

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L’isiacologie est un exemple de discipline étudiant l’Histoire de l’Antiquité, dont la méthodologie a connu de grands changements dans les années 1960-1970 conjointement à son institutionnalisation. Ici, deux grandes influences seront décrites : la sociologie et ses grands noms, comme P. Bourdieu, qui réfléchissent au concept de « science des religions » ; la quantification qui s’interroge sur l’application de cette méthode pour étudier des réalités — hautement — passées et l’histoire culturelle. La démonstration quantitative se fera en deux temps, avec une partie théorique puis pratique, à partir du catalogue SNRIS et privilégiant une étude des monnaies romaines isiaques.

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Wei, Wei, Xiwen Ren, and Shiyi Guo. "Evaluation of Public Service Facilities in 19 Large Cities in China from the Perspective of Supply and Demand." Land 11, no. 2 (January 18, 2022): 149. http://dx.doi.org/10.3390/land11020149.

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The equalization of urban public service facilities is important to the daily lives of urban residents. Spatial quantification of the supply and demand of public service facilities can reveal relationships between supply and demand agents and provide a foundation for the planning of urban public service facilities. This study proposed a comprehensive framework to assess the current state of supply (accessibility of facilities) and demand (population carrying pressure) of various public services in cities and determine patterns between different public service facilities. This framework contains three elements: (a) multi-scale spatial quantification of the matching of supply and demand, (b) spatial matching of supply and demand, and (c) spatial clustering analysis of the supply and demand balance. This study analyzed 19 major cities in China from a supply and demand perspective and examined implications for matching the supply and demand of public service facilities. The results indicated that education service facilities had the most appropriate supply and demand relationship. Areas where public service facilities had a good matching of supply and demand demonstrated a strong pattern of clustering. There were significant differences in the level of matching of the supply and demand of public service facilities among various regions in China. The limitations of the framework and future directions are discussed.

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González-Díaz, Patricia, Paloma Ruiz-Benito, Jorge Gosalbez Ruiz, Gregorio Chamorro, and Miguel A. Zavala. "A Multifactorial Approach to Value Supporting Ecosystem Services in Spanish Forests and Its Implications in a Warming World." Sustainability 11, no. 2 (January 11, 2019): 358. http://dx.doi.org/10.3390/su11020358.

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Carbon storage and sequestration are key ecosystem services critical to human well-being and biodiversity conservation. In a warming context, the quantification and valuation of carbon storage and sequestration is important in ensuring that effective incentives are put in place to tackle climate change. The quantification and valuation of ES such as carbon storage and sequestration requires the calculus of actual values and prediction, however, it usually does not include key processes that can indirectly influence carbon dynamics (i.e., risk, conservation or management). Here, we define a multifactorial approach to value ecosystem services based on two stages: (1) a biophysical approximation that integrates yearly supporting ecosystem services (i.e., quantification of carbon storage and sequestration) and (2) a weighing approach including factors that indirectly influence carbon storage and sequestration or that deserve specific attention (i.e., risk, conservation or management factors). The quantification of carbon storage and sequestration indicated that Spanish forests store on average 43 Mg C ha−1 and sequestrate on average 1.02 Mg C ha−1 year−1. Forest structure was a strong determinant of carbon storage and sequestration in Iberian forests, hence there was a strong spatial variation in the carbon sink. We adapted the weighting values to a financial cap and the monetary value of carbon increased more than four times when the weighting factors were taken into account. Finally, we argue that a multifactorial approach to value supporting ecosystem services incorporating aspects related to conservation and risk prevention can facilitate ecosystem service valuation and assist policy makers and stakeholders to establish payment service policies.

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Reymov, Temurbek. "ECONOMIC ASSESSMENT OF CROP PRODUCTION ECOSYSTEM SERVICES OF KARAKALPAKSTAN AND TASHKENT REGION." JOURNAL OF AGRO PROCESSING 6, no. 2 (June 30, 2020): 19–25. http://dx.doi.org/10.26739/2181-9904-2020-6-3.

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The given research work aims to analyze Ecosystem Services of crop production area of Uzbekistan, mainly in two regions: Republic of Karakalpakstan and Tashkent Province. After analysis, I will try to give proper assessment of ecosystem service using socio-economic quantification of Ecosystem Services. Mainly the market price valuation method is applied in this research.

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Ryglová, Kateřina, and Ondřej Dufek. "The Evaluation of the Congressional Service Provider’s Potential." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 54, no. 3 (2006): 183–90. http://dx.doi.org/10.11118/actaun200654030183.

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This paper deals with the evaluation methodology of the service provider’s potential in the area of the congressional tourist trade where the provider means the owner of the congressional ground. In this contribution, the progress of creating the methodology is described; from quantification and ordering particular evaluating factors through levelling their importance with the aid of the weights up to the quantification of the congressional service provider’s potential through indexes. The suggested methodology is put into practice by testing on an existing congressional service provider. The given subject reached the value of index of congressional service provider’s potential ICP = 81,64 %, which ranked him into the category of excellent potential.

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Březina, David, Jakub Michal, Zdeněk Adamec, and Jana Burdová. "Quantification of the economic value of the recreational function of forests in the territory of Městské lesy Hradec Králové a.s." Journal of Forest Science 65, No. 5 (May 31, 2019): 161–70. http://dx.doi.org/10.17221/38/2019-jfs.

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This article aims at the valuation of the potential and economic significance of the recreational ecosystem services of forests. The research was conducted in the area of Městské lesy Hradec Králové a.s. in 2018. A part of the questionnaire survey assessed by means of statistical analysis was based on the travel cost method and the contingent valuation method, which investigate the respondents’ willingness to pay for services resulting from the recreational ecosystem service of forests. The research specifically dealt with the visitors’ willingness to pay for the services resulting from the use of forest logging roads, forest clearings, and small structures of forest infrastructure. The questionnaires were created using foreign publications and case studies. The findings of the questionnaire survey indicated that visitors prevailingly believed that the recreational service provided by the area of interest should not be chargeable. The reason for this opinion was mainly the fact that the visitors perceive the forests in the territory of Městské lesy Hradec Králové a.s. as public goods, hence the access to them should be free of charge.

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Sznajderman, Lucas, Matías Coppa, Juan F. Martiarena, and Oscar Díaz Olariaga. "QUANTIFICATION MODEL OF AIRPORT GROUND SUPPORT EQUIPMENT EMISSIONS." Aviation 26, no. 4 (November 29, 2022): 195–208. http://dx.doi.org/10.3846/aviation.2022.17967.

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Emissions of aircraft support vehicles (called Ground Support Equipment or GSE) are produced by a series of factors depending mostly on the following: aircraft arrivals and departures and time spent in parking stands, aircraft type, operation type (traditional, with scale or low cost), geometrical arrangement of the apron and fleet charactistics, including power and years of use, among others. The aim of this work is to develop an integrated model identifying the required GSEs and the gaseous emissions produced by them due to apron traffic and aircraft service. In order to do this, in the case of service, the model proposes considering loading and unloading and dividing them into the following stages: wait, connection, service and disconnection. The advantage of the proposed model over other proposals is that this model aims at copying the real movements of support vehicles in service according to the aircraft and its corresponding operation (Full-Service, Low-Cost or scale). In order to do that, the program discretizes GSE movements into loading and unloading processes through different stages and for circulation where the tool itself sets the parameters of the apron.

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Jiang, Xin Kuang, and Xu Chen. "Research on Prediction Model of the Impact of New Telecom Services Tariff Based on the Customer Choice Behavior." Advanced Materials Research 765-767 (September 2013): 3249–52. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.3249.

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This paper studies the impact of new telecom services tariff on the customers inside (customers who have ever chosen the original telecom service packages) and the revenue variation from the perspective of utility and customer choice behavior. On the basis of the quantification of telecom services tariff, a measurement model is built through multi-nominal logit (MNL) choice rule to predict the impact. Important indicators such as utility of service packages, transfer probability of the customers inside and expected change of revenue are obtained, which are useful for market orientation, revenue prediction and optimization management of the new telecom services tariff.

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Rebelo, Alanna J., Willem-Jan Emsens, Karen J. Esler, and Patrick Meire. "Quantification of water purification in South African palmiet wetlands." Water Science and Technology 78, no. 5 (September 5, 2018): 1199–207. http://dx.doi.org/10.2166/wst.2018.389.

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Abstract Despite the importance of water purification to society, it is one of the more difficult wetland ecosystem services to quantify. It remains an issue in ecosystem service assessments where rapid estimates are needed, and poor-quality indicators are overused. We attempted to quantify the water purification service of South African palmiet wetlands (valley-bottom peatlands highly threatened by agriculture). First, we used an instantaneous catchment-scale mass balance sampling approach, which compared the fate of various water quality parameters over degraded and pristine sections of palmiet wetlands. We found that pristine palmiet wetlands acted as a sink for water, major cations, anions, dissolved silicon and nutrients, though there was relatively high variation in these trends. There are important limitations to this catchment-scale approach, including the fact that at this large scale there are multiple mechanisms (internal wetland processes as well as external inputs) at work that are impossible to untangle with limited data. Therefore, secondly, we performed a small field-scale field survey of a wetland fragment to corroborate the catchment-scale results. There was a reasonable level of agreement between the results of the two techniques. We conclude that it appears possible to estimate the water purification function of these valley-bottom wetlands using this catchment-scale approach.

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Modrak, Vladimir, Slavomir Bednar, and Pavol Semanco. "Decision-Making Approach to Selecting Optimal Platform of Service Variants." Mathematical Problems in Engineering 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/9840679.

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Nowadays, it is anticipated that service sector companies will be inspired to follow mass customization trends of industrial sector. However, services are more abstract than products and therefore concepts for mass customization in manufacturing domain cannot be transformed without a methodical change. This paper is focused on the development of a methodological framework to support decisions in a selection of optimal platform of service variants when compatibility problems between service options occurred. The approach is based on mutual relations between waste and constrained design space entropy. For this purpose, software for quantification of constrained and waste design space is developed. Practicability of the methodology is presented on a realistic case.

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百, 晓莹. "Quantification and Driving Factors of Carbon Sequestration Service Flow Paths." Advances in Geosciences 12, no. 05 (2022): 654–67. http://dx.doi.org/10.12677/ag.2022.125066.

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Halabi, Talal, and Martine Bellaiche. "Towards quantification and evaluation of security of Cloud Service Providers." Journal of Information Security and Applications 33 (April 2017): 55–65. http://dx.doi.org/10.1016/j.jisa.2017.01.007.

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Machchhar, Raj Jiten, Omsri Kumar Aeddula, Alessandro Bertoni, Johan Wall, and Tobias Larsson. "SUPPORTING CHANGEABILITY QUANTIFICATION IN PRODUCT-SERVICE SYSTEMS VIA CLUSTERING ALGORITHM." Proceedings of the Design Society 3 (June 19, 2023): 3225–34. http://dx.doi.org/10.1017/pds.2023.323.

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AbstractThe design of Product-Service Systems (PSS) is challenging due to the inherent complexities and the associated uncertainties. This challenge aggravates when the PSS being considered has a longer lifespan, is expected to encounter a dynamic context, and integrates many novel technologies. From systems engineering literature, one of the measures for mitigating the risks associated with the uncertainties is incorporating means in the system to change internally as a response to change externally. Such systems are referred to as value-robust systems, and their development largely relies on Tradespace exploration and synthesis. Tradespace exploration and synthesis can be challenging and a time-consuming task due to dimensionality. In this light, this paper aims to present an approach that enables the population of the Tradespace and then, supports the synthesis of such a Tradespace using a clustering algorithm for support changeability quantification in PSS. The proposed method is also implemented on a demonstrative case from the construction machinery industry.

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Menezes, Liziane Silva, Miguel Afonso Sellitto, Tatiane Pereira Librelato, Miriam Borchardt, and Giancarlo Medeiros Pereira. "Identification and quantification of influent factors in perceived quality of the e-service provided by a university." Business Process Management Journal 22, no. 3 (June 6, 2016): 438–57. http://dx.doi.org/10.1108/bpmj-07-2015-0100.

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Purpose – The purpose of this paper is to develop a multiple item scale for measuring perceived quality in e-service provided by a university. Design/methodology/approach – The authors used a two-step methodology: a qualitative part to identify relevant dimensions and indicators in e-service and a numerical survey to assess preferences and evaluations of 252 users, regarding indicators of e-service quality, as well as a global degree of satisfaction with the overall e-service. Multivariate and structural techniques helped extracting guidelines for improving perceived quality. Findings – The authors refined a scale by factor analysis, remaining five dimensions and 15 items. The five dimensions are: trust, convenience, responsivity, empathy and personalization. The authors found out that trust, responsivity and empathy, at a 0.01 level, are directly related with the overall satisfaction with e-service. Research limitations/implications – Specific results are not generalizable to others universities, but the method can be replicated in others e-service providers. For continuity, the authors recommend multicriterial methods for prioritizing indicators. For confirmatory analysis, the authors suggest a new survey with a larger sample, aggregating new indicators by more qualitative research. Practical implications – The method can help universities to evaluate and eventually reformulate their strategies in dealing with e-services users. Originality/value – The paper helps clarify how to structure and organize indicators related to e-service perceived quality and how to identify those activities that can help managers to improve it.

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Cui, Xiaodong, and Ching-Ter Chang. "Matching and Coordination among Elderly Services, Aging, and Economy in China." Mathematical Problems in Engineering 2021 (April 10, 2021): 1–11. http://dx.doi.org/10.1155/2021/5552644.

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Under the background of China getting old before getting rich, the elderly service, as a public project, should be coordinated with the degree of aging and economic level to avoid the improper allocation of public resources. This article aims to investigate whether an insufficient or overthreshold phenomenon exists in China. Firstly, based on the “active aging theory,” the elderly service index is constructed, and then matching and coordination models are proposed to obtain coordination degrees among aging, the elderly service, and the economy. In terms of coordination, elderly service-aging is at a low level and elderly service-economic level shows an agglomeration of high in the east and low in the west, while the elderly service-aging-economic level is quite different among provinces. In provinces with high coordination (e.g., Beijing and Guangdong), the elderly services are appropriate. In comparison, in provinces with low coordination, the elderly services may either lag behind the aging degree (e.g., Sichuan) or exceed the local economic level (e.g., Shannxi). Therefore, the development of aging services should focus on coordination rather than quantification and scale. Considering the regional heterogeneity, we can formulate soft constraints allowing a lower minimum limit and greater flexibility range.

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Rao, Sridevi S., Ray Eberts, M. U. Thomas, and Robert Plante. "A Fuzzy Set Approach in the Quantification of Technical Support Service Quality." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 42, no. 6 (October 1998): 564–68. http://dx.doi.org/10.1177/154193129804200609.

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Consumers' perceptions of service quality are highly qualitative as well as subjective. Individual variation exists in the meaning of “low,” “medium,” or “high” levels of service quality. A framework for quantifying the service quality dimension levels for technical support service is presented in the current study. Results are combined with the utility values of the dimension levels obtained through conjoint analysis. Customers' behavioral intentions subsequent to the quality of the technical support they experience are also found empirically. The methodology presented in this research can be used in improving the comprehensibility and quantification of service quality.

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Jagwani, Priti, and Saroj Kaushik. "Entropy-Based Quantification of Privacy Attained Through User Profile Similarity." International Journal of Information Security and Privacy 15, no. 3 (July 2021): 19–32. http://dx.doi.org/10.4018/ijisp.2021070102.

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Location-based services refer to services that use location as primary input. But accessing user's location by an adversary invites issues of privacy breach. Instead of specific location coordinates, its surrounding area known as cloaking region is revealed in order to get the service. K anonymity technique of location privacy ensures that at least K-1 users should be included within a specific cloaked region. Researches have established that on combining K anonymity with the idea of including similar users together in a cloaked region provides stringent privacy (especially from background and heterogeneity attacks). This work quantifies the amount of privacy gain attained through, opting-for users with similar profiles instead of random users. The quantification is done by using KL divergence. Values of KL divergence of user profiles have been calculated for different cloaking regions containing similar and random users. Low KL divergence values depict privacy gains up to 33% for users with similar profiles.

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Merson, S., P. Tyrer, D. Carlen, and T. Johnson. "The cost of treatment of psychiatric emergencies: a comparison of hospital and community services." Psychological Medicine 26, no. 4 (July 1996): 727–34. http://dx.doi.org/10.1017/s0033291700037740.

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SynopsisThis study aimed to compare the costs of treatment by community-based and hospitalbased psychiatric services. The design entailed random allocation of patients presenting with psychiatric emergencies over a subsequent 3-month period to one of two services, followed by retrospective quantification of service use and its cost for each group. One hundred patients with emergency presentations to the psychiatric service via the Accident and Emergency Department, liaison psychiatrist and approved social worker were included in the study. Their use of a range of items of service was recorded and disaggregated costings of these items of service was calculated. The use of non-psychiatric services was similar for both groups, but the use of psychiatric services differed, with the hospital group making greater use of in-patient beds and the community group employing more frequent home-based interventions. The total cost of treatment for the community group (£56000) was much lower than for the hospital group (£130000), although the median patient cost was 50% higher in the community group (£938 v. £610), and a greater proportion of the community service expenditure (10% v. 2%) was due to failed contacts. Taken together with clinical outcome, which showed no advantages for the hospital-based service over the community-based service, our findings suggest that this form of community psychiatric service is a cost-efficient alternative to hospital-based care for this group of patients.

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Eldeeb, Gamal, and Moataz Mohamed. "Understanding the Transit Market: A Persona-Based Approach for Preferences Quantification." Sustainability 12, no. 9 (May 9, 2020): 3863. http://dx.doi.org/10.3390/su12093863.

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The study aims at utilizing a persona-based approach in understanding, and further quantifying, the preferences of the key transit market groups and estimating their willingness to pay (WTP) for service improvements. The study adopted an Error Component (EC) interaction choice model to investigate personas’ preferences in a bus service desired quality choice experiment. Seven personas were developed based on four primary characteristics: travel behaviour, employment status, geographical distribution, and Perceived Behavioural Control (PBC). The study utilized a dataset of 5238 participants elicited from the Hamilton Street Railway Public Engagement Survey, Ontario, Canada. The results show that all personas, albeit significantly different in magnitude, are negatively affected by longer journey times, higher trip fares, longer service headways, while positively affected by reducing the number of transfers per trip and real-time information provision. The WTP estimates show that, in general, potential users are more likely to have higher WTP values compared to current users except for at-stop real-time information provision. Also, there is no consensus within current users nor potential users on the WTP estimates for service improvements. Finally, shared and unique preferences for service attributes among personas were identified to help transit agencies tailor their marketing/improvement plans based on the targeted segments.

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Higgins, Colleen B., Kurt Stephenson, and Bonnie L. Brown. "Nutrient Bioassimilation Capacity of Aquacultured Oysters: Quantification of an Ecosystem Service." Journal of Environmental Quality 40, no. 1 (January 2011): 271–77. http://dx.doi.org/10.2134/jeq2010.0203.

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Hanna, Dalal E. L., Stephanie A. Tomscha, Camille Ouellet Dallaire, and Elena M. Bennett. "A review of riverine ecosystem service quantification: Research gaps and recommendations." Journal of Applied Ecology 55, no. 3 (December 17, 2017): 1299–311. http://dx.doi.org/10.1111/1365-2664.13045.

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Delgado-Rodriguez, M., A. Cueto-Espinar, R. Rodriguez-Contreras, and R. Galvez-Vargas. "Quantification of risk factors in Hospital infection at a surgical service." European Journal of Epidemiology 4, no. 2 (June 1988): 235–41. http://dx.doi.org/10.1007/bf00144759.

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Wei, Lijun, Yuhan Yang, Jing Wu, Chengnian Long, and Yi-Bing Lin. "A Bidirectional Trust Model for Service Delegation in Social Internet of Things." Future Internet 14, no. 5 (April 29, 2022): 135. http://dx.doi.org/10.3390/fi14050135.

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As an emerging paradigm of service infrastructure, social internet of things (SIoT) applies the social networking aspects to the internet of things (IoT). Each object in SIoT can establish the social relationship without human intervention, which will enhance the efficiency of interaction among objects, thus boosting the service efficiency. The issue of trust is regarded as an important issue in the development of SIoT. It will influence the object to make decisions about the service delegation. In the current literature, the solutions for the trust issue are always unidirectional, that is, only consider the needs of the service requester to evaluate the trust of service providers. Moreover, the relationship between the service delegation and trust model is still ambiguous. In this paper, we present a bidirectional trust model and construct an explicit approach to address the issue of service delegation based on the trust model. We comprehensively consider the context of the SIoT services or tasks for enhancing the feasibility of our model. The subjective logic is used for trust quantification and we design two optimized operators for opinion convergence. Finally, the proposed trust model and trust-based service delegation method are validated through a series of numerical tests.

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Zheng, Yujie, Meiyan Li, and Jiakun Liu. "A Two-Sided Stable Matching Model of Cloud Manufacturing Tasks and Services considering the Nonlinear Relationship between Satisfaction and Expectations." Complexity 2021 (October 7, 2021): 1–11. http://dx.doi.org/10.1155/2021/6735210.

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To improve the satisfaction of both service demanders (SDs) and service providers (SPs) in the matching of cloud manufacturing (CMfg) tasks and services, a two-sided stable matching model of CMfg tasks and service considering the nonlinear relationship between satisfaction and expectations is proposed. As the expectations of SDs and SPs are difficult to be quantified directly, an evaluation method based on interval-valued hesitant fuzzy linguistic sets (IVHFLSs) is first presented. Next, a nonlinear model of satisfaction and expectations is built to quantify the satisfaction, which achieves accurate quantification of satisfaction. Then, a two-sided stable matching model of CMfg tasks and service is built, which takes the satisfaction of SDs and SPs as the optimization goals and considers the individual rationalities and blocking pairs. Finally, an adaptive genetic algorithm (AGA) is designed to solve the proposed two-sided matching model. A practical application and comparison analysis is used to verify the effectiveness and superiority of the research.

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Yang, Yang, Mengju Wei, Zhao Liu, Yongli Wang, Yumeng Qin, Zhen Liu, and Xiangyi Zhou. "Electric vehicle charging station planning method based on charging service capacity quantification and distribution grid acceptance capacity constraints." Journal of Physics: Conference Series 2237, no. 1 (March 1, 2022): 012011. http://dx.doi.org/10.1088/1742-6596/2237/1/012011.

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Abstract The planning of EV charging stations that integrates the quantification of charging service capacity and distribution grid acceptance capacity constraints is of great significance for the synergistic development of EVs and distribution grids. The charging service capacity quantification of the charging network is analyzed to derive the basis for judging whether the electric vehicle traffic on the path can be captured; with the objective of minimizing the total cost of construction and operation, a charging facility planning model is established, and the distribution grid acceptance capacity constraint is set, and the genetic algorithm is used to solve the problem, and the best planning scheme for electric vehicle charging stations is finally derived.

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Paul Rajan, R. Arokia. "Service Request Scheduling based on Quantification Principle using Conjoint Analysis and Z-score in Cloud." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 2 (April 1, 2018): 1238. http://dx.doi.org/10.11591/ijece.v8i2.pp1238-1246.

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Service request scheduling has a major impact on the performance of the service processing design in a large-scale distributed computing environment like cloud systems. It is desirable to have a service request scheduling principle that evenly distributes the workload among the servers, according to their capacities. The capacities of the servers are termed high or low relative to one another. Therefore, there is a need to quantify the server capacity to overcome this subjective assessment. Subsequently, a method to split and distribute the service requests based on this quantified server capacity is also needed. The novelty of this research paper is to address these requirements by devising a service request scheduling principle for a heterogeneous distributed system using appropriate statistical methods, namely Conjoint analysis and Z-score. Suitable experiments were conducted and the experimental results show considerable improvement in the performance of the designed service request scheduling principle compared to a few other existing principles. Areas of further improvement have also been identified and presented.

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Marchwinski, Thomas. "Economic Impact of Existing and New Commuter Rail Service on Retail and Recreational Spending in the Vicinity of Station Areas." Transportation Research Record: Journal of the Transportation Research Board 1623, no. 1 (January 1998): 135–43. http://dx.doi.org/10.3141/1623-18.

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A quantification is provided of the impact of both existing and new commuter rail services on the economies of local jurisdictions, and selectively on direct state government revenues. Specifically, an investigation and documentation have been conducted on increased spending by rail riders on retail services in local station areas and increased spending by recreational rail travelers in resort areas as a result of the presence of rail service. Actual ridership surveys conducted on three commuter rail lines in New Jersey during 1995 and 1996 are used to establish relationships between increased spending in local station areas, as well as other economic impacts, such as induced ridership and relocation of residents as a result of improved commuter rail service. The three surveys were large-scale surveys of two entire rail lines, the Morris and Essex Lines and the Atlantic City Line, and a weekend survey during the summer tourist season of the coastal portion of the North Jersey Coast Line. With a 40–60 percent return rate, these surveys represented a rich database for estimating the impact of commuter rail service on local economies.

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dos Santos, Manuel P., Tiago G. Morais, Tiago Domingos, and Ricardo F. M. Teixeira. "Valuing Ecosystem Services Provided by Pasture-Based Beef Farms in Alentejo, Portugal." Land 11, no. 12 (December 8, 2022): 2238. http://dx.doi.org/10.3390/land11122238.

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This work aims to measure and value the ecosystem services of grasslands and croplands covered by pasture-based beef farms in Alentejo. It combines pixel-level data from the Portuguese Mapping and Assessment of Ecosystem Services study and farm-level data from 40 farms. Five ecosystem services were considered: soil protection, carbon sequestration, support to extensive animal production, plant food production and fiber production. Two different approaches for service quantification were used: an “average class” method and a “buffer” approach. Double counting issues were avoided by applying a specific methodology developed for this study. The results obtained were similar for both approaches in the case of grasslands, with an average value between 146 and 176 €/ha/year. For croplands, the average service value oscillated between 40 and 166 €/ha/year. Soil protection was the most valuable service, with over 90% of the total value. Extrapolating these results for the entire region, the five ecosystem services were estimated to be worth between 173 M€ (class method) and 223 M€ (buffer approach). These results suggest that pasture-based beef farms in Alentejo help to provide a significant number of ecosystem services with positive environmental effects that are currently not remunerated by the market.

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Le Roy, Anne, and Claudine Offredi. "La quantification au service de l?observation sociale locale : à quelles conditions ?" Revue Française de Socio-Économie 7, no. 1 (2011): 191. http://dx.doi.org/10.3917/rfse.007.0191.

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Fall, Doudou, Takeshi Okuda, Youki Kadobayashi, and Suguru Yamaguchi. "Security Risk Quantification Mechanism for Infrastructure as a Service Cloud Computing Platforms." Journal of Information Processing 23, no. 4 (2015): 465–75. http://dx.doi.org/10.2197/ipsjjip.23.465.

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Dragan, Krzysztof, and Piotr Synaszko. "In-Service Flaw Detection and Quantification in the Composite Structures of Aircraft." Fatigue of Aircraft Structures 2009, no. 1 (July 26, 2009): 37–41. http://dx.doi.org/10.2478/v10164-010-0003-0.

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In-Service Flaw Detection and Quantification in the Composite Structures of Aircraft Taking into consideration the increased usage of composites for aircraft structures there is a necessity for gathering information about structural integrity of such components. During the manufacturing of composites as well as during in service and maintenance procedures there is a possibility for damage occurrence. There is a large number of failure modes which can happen in such structures. These failure modes affect structural integrity and durability. In this work modern approach for detection of composites damage detection such as: delaminations, disbonds, foreign object inclusion and core damage has been presented. This detection is possible with the use of advanced P-C aided Non Destructive Testing methods. In the article nondestructive testing results for the composite vertical tail skins on MiG-29 aircraft will be delivered as well as some results of F-16 horizontal stabilizer and W-3 helicopter main rotor blades. Moreover some results of the composite honeycomb and sandwich structures will be presented based on the materials used in the construction of gliders and small aircraft. Factors affecting structural integrity and durability of the composites will be highlighted as well as necessity of the inspection with the use of modern NDT techniques. At the end some effort with Structural Health Monitoring connected with possibility of condition monitoring of composites will be presented.

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Tipple, Craig, Soonita Oomeer, Olamide Dosekun, and Nicola Mackie. "Service impact of a change in HIV-1 viral load quantification assay." Journal of the International AIDS Society 17 (November 2014): 19677. http://dx.doi.org/10.7448/ias.17.4.19677.

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Choi, Young B., Hyewon Seo, and Jonathan M. Blackburn. "A quantification model using P3P in privacy control for telecommunications service management." International Journal of Services and Standards 1, no. 4 (2005): 426. http://dx.doi.org/10.1504/ijss.2005.007470.

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Vendrell-Herrero, Ferran, Esteban Lafuente, and Yancy Vaillant. "Territorial servitization: Conceptualization, quantification and research agenda." Investigaciones Regionales - Journal of Regional Reserach 48 (July 24, 2020): 5–15. http://dx.doi.org/10.38191/iirr-jorr.20.017.

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Territorial servitization is the analysis of how manufacturing firms and knowledge-intensive business service (KIBS) sectors collaborate in working towards a renaissance of manufacturing competitiveness within regions of developed economies. This editorial note provides four insights. First, it sums up the existing body of knowledge on the topic. Second, it quantifies and maps the territorial servitization activity in Spanish regions. Third, it presents and reflects on the collection of five papers in this special issue, which bring new insights into how geographical proximity, innovation systems, and KIBS heterogeneity benefit our understanding of territorial servitization. Finally, the study provides a number of yet unresolved topics that deserve further academic attention.

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Kirey, Vladimir V., and Olga I. Morozova. "METHODS OF QUANTITATIVE VALUATION OF ECOSYSTEM SERVICES." EKONOMIKA I UPRAVLENIE: PROBLEMY, RESHENIYA 8/2, no. 139 (2023): 158–66. http://dx.doi.org/10.36871/ek.up.p.r.2023.08.02.017.

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The process of harmonization of economic and environmental principles of nature management is to identify areas of interaction and optimize the parameters of interaction. One of the elements of the harmonization system is the process of quantifying ecosystem services generated by natural ecosystems. The importance of integrating the quantitative assessment of ecosystem services into the decision-making process on the nature of environmental management is due to the process of integrating various ecosystems and the flow of ecosystem services they generate into the global economic system. Several methods have been developed to quantify ecosystem services that successfully cover almost the entire range of ecosystem services provided by different ecosystems. The purpose of this article is to describe the existing methods for quantifying ecosystem services. The author notes that when choosing a method for assessing ecosystem services, the researcher must take into account a combination of various factors influencing the results of the assessment. When choosing in favor of the reliability of economic methodology, the researcher will be forced to abandon the analysis of all parameters of the ecosystem service. Each of the described methods for quantifying ecosystem services has both Advantages and disadvantages. The process of choosing a method of quantification can be optimal if the goals and subject of quantification of ecosystem services are correctly determined.

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Nam, Ki, Bo Kim, and Bruce Carnie. "Service Open Innovation; Design Elements for the Food and Beverage Service Business." Journal of Open Innovation: Technology, Market, and Complexity 4, no. 4 (November 1, 2018): 53. http://dx.doi.org/10.3390/joitmc4040053.

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Despite the well-recognised contribution of design to business, practitioners still find it challenging to manage design assets. Given that one cannot manage a business without measuring these assets, researchers and practitioners deem that the lack of a practical measuring tool for design is the cause of this unfavorable situation. Hence, establishing relevant criteria for measuring design effectiveness is essential for developing the tools. However, criteria must anticipate key business outcomes in order to demonstrate effectiveness, and to propose actionable items. Whether the outcome is sales figures or customer satisfaction survey results, the criteria should clearly link with business goals. Also, the technologies in the Fourth Industrial Revolution facilitate the quantification of customer behaviour related to business performance, such as lingering time on the website for shopping. In this context, statistical understanding of design elements is critical for determining appropriate strategies in the era of digitalised data. By utilising a Service Blueprint, this study also proposes a novel approach to tackle current challenges regarding the open innovation process. Since appropriately-developed design elements are the prerequisite of successful measurement, this study extracts the elements through in-depth interviews, and examines them quantitatively with existing business theory. As a result, design elements for the food and beverage service business are confirmed by using the Structural Equation Modeling.

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Johns, Gemma, Bethan Whistance, Anna Burhouse, Sara Khalil, Megan Whistance, Saiba Ahuja, Mike Ogonovsky, and Alka Ahuja. "Benefits, challenges and sustainability of digital healthcare for NHS Wales: a qualitative study." BMJ Open 13, no. 5 (May 2023): e069371. http://dx.doi.org/10.1136/bmjopen-2022-069371.

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IntroductionDigital healthcare in the UK was adopted out of necessity rather than choice during the COVID-19 pandemic. However, as we move forward, UK governments and healthcare services have acknowledged its evident benefits for patients, staff and the National Health Service (NHS), and are keen to sustain its improvements in the long term.ObjectiveTo understand the benefits, challenges and sustainability of a future-proof digital healthcare.DesignA semi-structured interview study was conducted.SettingIn NHS services in Wales, UK.ParticipantsWith clinical and non-clinical staff across a mix of clinical specialties.Outcome measuresSemi-structured interviews were conducted to address benefits, challenges and sustainability of a national video consulting (VC) service, and thematically coded using a quantification method of qualitative work.ResultsA total of 203 interviews were conducted and 3 dominant domains emerged, with 7 themes and 26 categories.LimitationsIt is important to acknowledge that these findings were captured during a pandemic.ConclusionsNHS Wales has demonstrated that currently there are an equal measure of benefits and challenges to a national digital healthcare. However, with ongoing government and service support, improvement and evaluation, it has potential for a sustainable digital future, in which the benefits can outweigh the challenges.

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Zhu, Xiaorong, Xiaodi Gong, and Danny H. K. Tsang. "The optimal macro control strategies of service providers and micro service selection of users: quantification model based on synergetics." Wireless Networks 24, no. 6 (January 28, 2017): 1991–2004. http://dx.doi.org/10.1007/s11276-016-1436-3.

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Santhosh, S., K. Rajkumar, M. Menaka, and B. Venkataraman. "Flaw Quantification in Colmonoy Overlays Using Immersion Ultrasonic Testing." Applied Mechanics and Materials 787 (August 2015): 912–16. http://dx.doi.org/10.4028/www.scientific.net/amm.787.912.

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Corrosion, wear and galling resistance under high temperature service conditions are highly essential in nuclear components such as grid plate and diverse safety rod drive mechanism. In order to protect the components from these worst service conditions, hard facing alloys like colmonoy are overlaid on the nuclear components using plasma transfer arc and Gas Tungsten Arc Deposition techniques. Typical defects that occurred during deposition include lack of bonding between substrate and overlay, cracks and porosities. Hence the characterization of such defects is highly essential before using it for the intended application. Conventionally radiography, liquid penetrant testing and ultrasonic testing are used. Radiography cannot detect debonds which are parallel to the surface of the specimen. Though liquid penetrant testing is used for detecting surface cracks, ultrasonic testing could be effectively used in order to characterize highly planar defects which are parallel to the surface. This paper highlights the successful application of immersion ultrasonic testing for characterization of colmonoy overlays. The sample consisted of Colmonoy coating (4-5 mm) on a 316 LN substrate. Ultrasonic examination was carried out using the Immersion Ultrasonic flaw detector. Typical A scans of good region and debonded regions were considered and compared in order to predict the actual location of the defect. In addition B and C scans were also considered for exact characterisation of the defects. Results clearly indicated the superior defect detectability by the use of immersion ultrasonic testing on colmonoy overlays.

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Ye, Zhengqiang, Quan Wang, Gang Chen, and Ming Jin. "Research on the Construction of Modern Medical Information Service Model under the Background of Artificial Intelligence." Wireless Communications and Mobile Computing 2022 (June 17, 2022): 1–12. http://dx.doi.org/10.1155/2022/4501495.

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In the era of the Internet, artificial intelligence (AI) and other emerging technologies leading the industrial revolution, on the basis of comprehensive analysis of modern medical information services and analysis of the content of some hospital websites, from the perspective of the public, the expert scoring method is applied to establish medical information on hospital websites. Service comprehensive evaluation index system, at the same time quantification and assignment of indicators, combined with the theoretical research platform of information service quality. The comprehensive evaluation model of the medical information service function and quality of the hospital website was constructed by the comprehensive scoring method, and an empirical study was carried out. After comparing the data results of the model simulation with the actual data, it can be seen that the deviation between the actual data and the simulated data is not significant, that is, between 0.12% and 15.93%, which is within a reasonable range. Therefore, we have reason to believe that the model is an effective and reasonable use of the system dynamics method. On the basis of previous theoretical research and historical yearbook data, plus innovative theoretical assumptions, the Internet+healthcare embedded in the Internet+healthcare is constructed. The model of the traditional medical information service system can help clarify the role of Internet+health and medical information service in the overall medical information service system.

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Ostermayer, Gerald, Christian Backfrieder, and Manuel Lindorfer. "Dynamic Vehicular Traffic Load: Definition and Quantification." Journal of Telecommunications and the Digital Economy 7, no. 2 (June 30, 2019): 74–91. http://dx.doi.org/10.18080/jtde.v7n2.191.

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In this paper, we introduce a method that quantifies the amount of traffic over time by the help of a cloud calculation service and vehicular communication. Furthermore, the approach is applicable also in vehicular traffic simulations, which are widely used in research to demonstrate the effects of proposed solutions to traffic problems. As unused road segments strongly influence the overall traffic load (i.e. used vs full road capacity), we propose a methodology that dynamically calculates the load over time and considers whether specific parts of the road network are used. We introduce two possibilities to filter out distortion of the created statistics due to variation in usage over time. Our novel approach is both simple but widely configurable to fit individual needs. The approach is proven by simulations and application of the load calculation in combination with an intelligent route optimization approach by comparing the optimization gain with the calculated traffic load.

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Ramisetty-Mikler, PhD, MPH, Suhasini, Armin R. Mikler, PhD, Martin O’Neill, PhD, and Jared Komatz, MPH, CPH, GISS. "Conceptual framework and quantification of population vulnerability for effective emergency response planning." Journal of Emergency Management 13, no. 3 (May 1, 2015): 227. http://dx.doi.org/10.5055/jem.2015.0236.

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Objective: The study focused on the methodological advancement and analytical approach of using multilevel data to define population vulnerability and risk in bioemergency disaster planning.Methods: The authors considered two types of vulnerabilities, transportation vulnerability that stems from lack of access to transportation (public or private) and communication vulnerability that stems from unavailability of needed language-specific communication resources. The authors used Transit Authority general transit feed data and the American Community Survey 5-year estimate data (2006-2010 summary files) to quantify these vulnerabilities. These data were integrated with Topologically Integrated Geographic Encoding and Referencing (TIGER) data for spatial analysis. A response plan was generated for Tarrant County, TX, and deemed feasible before consideration of vulnerable populations.Results: The results point to the importance of integrating geographical and population demographic features that represent potential barriers to the optimum distribution and utilization of resources into the analysis of response plans. An examination of transportation vulnerabilities indicate that, of those vulnerable in Tarrant County, nearly 23,000 individuals will be at-risk of not being able to reach the Point Of Dispensing (POD) to obtain services as they are beyond walking distance to the POD and lack access to transportation resources. The analysis of language vulnerability depicts an uneven distribution resulting in nonuniform demand at PODs for translation resources. There are more than 11,000 at-risk households in the South East region of Tarrant County alone that are truly in need of translation services.Conclusions: The authors demonstrated that multiple vulnerabilities at each POD can be quantified by aggregating the vulnerability at the available granularity (ie, all blocks or block groups) in a given service area. The quantification of vulnerability at each service area facilitates a POD-based at-risk analysis for the response plan. Disparities stemming from social, behavioral, cultural, economic, and health characteristics of diverse subpopulations could induce the need for additional targeted resources to support emergency response efforts.

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Ghosh, Puspendu, and Mala De. "Probabilistic Quantification of Distribution System Resilience for an Extreme Event." International Transactions on Electrical Energy Systems 2022 (June 1, 2022): 1–13. http://dx.doi.org/10.1155/2022/3838695.

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The occurrence of natural disasters such as cyclones, earthquakes, and floods has increased worldwide, and their effect is most intense in localized regions. These events expose weaknesses in the power system infrastructures and show how well-prepared the system is to operate its services in a resilient way. During and after an extreme event, the outage and service disruption happens due to the inability of the affected part of the grid to cope with disruptions, which leads to insufficient resilience of the system. It is becoming more critical to enhance the resilience of electrical networks to extreme weather occurrences through suitable hardening processes and smart operational techniques. A reliable prevention approach necessitates a quantitative resilience metric that can estimate the effects of the future extreme events on distribution systems and assess the possible benefits of various planning strategies. This study aims to address the issue of lack of resilience metrics and proposes probabilistic metrics for evaluating the performance of distribution systems resilience in case of extreme weather events. Specifically, this study introduces active and passive resilience concepts to provide insights into system response. The proposed resilience metrics for various weather scenarios are quantified for the IEEE 33-bus system. The simulation framework also analyzes the effects of different operational and structural resilience improvement approaches on the proposed resilience metrics.

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Teplý, Břetislav, Tomáš Vymazal, and Pavla Rovnaníková. "Methodology for the quantification of concrete sustainability." MATEC Web of Conferences 174 (2018): 01006. http://dx.doi.org/10.1051/matecconf/201817401006.

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Efficient sustainability management requires the use of tools which allow material, technological and construction variants to be quantified, measured or compared. These tools can be used as a powerful marketing aid and as support for the transition to “circular economy”. Life Cycle Assessment (LCA) procedures are also used, aside from other approaches. LCA is a method that evaluates the life cycle of a structure from the point of view of its impact on the environment. Consideration is given also to energy and raw material costs, as well as to environmental impact throughout the life cycle - e.g. due to emissions. The paper focuses on the quantification of sustainability connected with the use of various types of concrete with regard to their resistance to degradation. Sustainability coefficients are determined using information regarding service life and "eco-costs". The aim is to propose a suitable methodology which can simplify decision-making in the design and choice of concrete mixes from a wider perspective, i.e. not only with regard to load-bearing capacity or durability.

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Solano, Carlos, Pedro Castro-Rebollo, Antonio Pérez-Martínez, Lucia López-Corral, Pere Barba-Suñol, Mi Kwon, Valentín Ortiz, et al. "Quantifying the available capacity and resource needs for provision of CAR-T therapies in the National Health Service in Spain: a survey-based study." BMJ Open 13, no. 7 (July 2023): e071371. http://dx.doi.org/10.1136/bmjopen-2022-071371.

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ObjectivesTo estimate the readiness of Spanish National Health Service (NHS) hospitals to provide chimeric antigen receptor T cell (CAR-T), and to identify and quantify the different resources needed to provide CAR-T considering three scenarios defined by 10, 25 and 50 patients per centre per year.DesignTargeted literature review and quantitative study using a questionnaire and telephone interviews. An algorithm was created to determine hospitals’ readiness based on their capacity and capability. All the requirements for quantification were assessed and validated by the steering committee, formed by members of the Spanish Group of Haematopoietic Transplantation and Cell Therapy. A weighting system (from 0 to 1) was established for capability quantification. For resources quantification, a scoring system was established, with 0 points representing the minimum and 3 points the maximum of additional resources that a hospital indicated necessary.Setting40 Spanish hospital centres that perform allogeneic haematopoietic stem cell transplantation were invited to complete the questionnaire for capacity quantification, 28 of which provided valid responses. Nine hospitals participated in the interviews for resource quantification, eight of which had previously been designated by the Ministry of Health (MoH) to provide CAR-T.Outcome measureCurrent capacity of NHS Spanish sites to administer CAR-T under different theoretical scenarios with varying numbers of procedures, and the potential healthcare resources that would be needed to realise the theoretical capacity requirements.ResultsFour hospitals were optimally ready, 17 were somewhat ready and 7 were not ready. The actual extrapolated capacity of the currently designated MoH CAR-T sites would allow treatment of approximately 250 patients per year. Regarding healthcare resource needs, the numbers of haematologists, nurses and beds were the most important limiting factors, and those requiring further growth as patient numbers increased.ConclusionsIncreasing the number of CAR-T-qualified centres and/or increasing resources in the current designated sites are two potential strategies that should be considered to treat CAR-T-eligible patients in Spain.

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Souza, Sílvia Roberta, Abner Araújo Fajardo, Ivana Maria Soares de Camargos, Mateus Felipe Barbosa Lopes, Maria Teresa Gomes Barbosa, Dayana Cristina Silva Garcia, and White José dos Santos. "Non-Destructive Testing in the Strategic Research on the Performance of Bridges." Journal of Management and Sustainability 13, no. 1 (February 17, 2023): 81. http://dx.doi.org/10.5539/jms.v13n1p81.

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The main purpose of bridges is to overcome physical obstacles and improve territorial mobility, therefore, knowledge of their particularities is required, such as project design, inspection and execution, maintenance service plans and others. The aim of the research is to carry out a survey of the main pathological manifestations in three reinforced concrete highway bridges (HB) – built in different years, namely: 1927, 1960 and 2018. The qualification and quantification of the anomalies were carried out and, after that, the prioritization matrix was used, which allows obtaining strategies to ensure the safeguard of the HBs. The methodology used, data collection and detailed inspection of the structure, i.e., non-destructive testing, proved to be appropriate to assess the conditions of the HBs, and also allowed to present results related to recovery services and the necessary maintenance. The pathological manifestations in older bridges are the result of project and building errors, as well as lack of maintenance service.

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Journal articles on the topic 'Service quantification'

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