Search results for "differentiated"
showing 10 items of 67 documents
Performance Evaluation of a new Adaptive Packet Marking Scheme for TCP over DiffServ Networks
2004
In differentiated services (DiffServ) networks, packets may receive a different treatment according to their differentiated services code point (DSCP) label. As a consequence, packet marking schemes can be devised to differentiate packets belonging to the same TCP flow, with the goal of improving the experienced performance. The paper presents an extensive performance evaluation of a new adaptive packet marking scheme, applied to a traffic scenario composed of TCP flows with different lengths. The proposed marking scheme is most efficient when applied to a scenario composed of all long-lived flows. In a realistic mixed traffic scenario, composed of both long-lived and short-lived TCP flows,…
Fuzzy-neural Web switch supporting differentiated service
2006
New designs of the Web switches must incorporate a client-and-server-aware adaptive dispatching algorithm to be able to optimize multiple static and dynamic services providing quality of service and service differentiation. This paper presents such an algorithm called FNRD (Fuzzy-Neural Request Distribution) which operates at layer-7 of the OSI protocol stack. This algorithm assigns each incoming request to the server with the least expected response time estimated using the fuzzy approach. FNRD has ability for learning and adaptation by means of a neural network feedback loop. We demonstrate through the simulations that our dispatching policy is more effective than state-of-the-art layer-7…
Le origini del regionalismo differenziato di cui al 3 comma dell'art. 116 della Costituzione, rileggendo le carte di Gaspare Ambrosini
2021
The contribution traces the origins of the differentiated regionalism referred to in art. 116.3 of the Constitution in the original project by the Honorable Gaspare Ambrosini presented to the Constituent Assembly
Notazioni sul regionalismo differenziato tra aspirazioni autonomistiche e solidarietà economico-sociale
2020
Il regionalismo differenziato delineato dall’art. 116, co. 3, Cost. prevede la possibilità di una profonda revisione del sistema regionale attraverso un procedimento legislativo rinforzato, che richiede la stipula di una previa intesa tra lo Stato e la Regione interessata. Il contributo esamina i diversi problemi interpretativi che riguardano l’applicazione di questa norma costituzionale, alla luce delle iniziative avviate da alcuni Regioni a statuto ordinario. Dall’analisi delle diverse questioni giuridiche, politiche e finanziarie che sono collegate alla realizzazione del modello del regionalismo differenziato, si evince la necessità di superare un approccio settoriale, basato su autonomi…
‘More homework for me, too’. Meanings of differentiation constructed by elementary-aged students in classroom interaction
2012
Although the necessary role of differentiation in special education is well established in the literature, little is known about its social and peer interaction implications from the student perspective. The present qualitative study aims at offering detailed observational analyses of the meanings that 7- to 9-year-old students give to differentiated instruction in its initial phases in authentic classroom activities. The results were yielded from an ethno–methodological conversation analysis of the video-recordings of authentic classroom situations in a part-time Finnish special education setting (N = 12 lessons). The results revealed that whilst differentiation as a pedagogical solution s…
An analytical model of a new packet marking algorithm for TCP flows
2005
In Differentiated Services networks, packets may receive a different treatment according to their Differentiateo Services Code Point (DSCP) label. As a consequence, packet marking schemes can also be devised to differentiate packets belonging to a same TCP flow, with the goal of improving the performance experienced. This paper presents an analytical model for an adaptive packet marking scheme proposed in our previous work. The model combines three specific sub-models aimed at describing (i) the TCP sources aggregate, (ii) the marker, and (iii) the network status. Preliminary simulation results show quite accurate predictions for throughput and average queue occupancy. Besides, the research…
The relation between tumor cell proliferation and vascularization in differentiated and undifferentiated colon carcinomas in the rat.
1982
Tumor cell proliferation and tumor vascularization were investigated in differentiated and undifferentiated colon carcinomas of the rat. The following results were found: 1, in both tumor types, vascularization is developed equally well; 2, both in the differentiated and in the undifferentiated carcinomas, the number of proliferating tumor cells decreases with increasing distance from the capillaries; at a distance of about 80 microns, there is no longer any noteworthy tumor cell proliferation; 3, the differentiated and undifferentiated carcinomas differ both in the level of the mitosis index and 3H-thymidine labeling index as well as in their local proliferation pattern despite equal vascu…
Zróżnicowana integracja w Europie - źródła, mechanizmy, konsekwencje
2018
Kwestia zróżnicowanej integracji stanowi przedmiot ożywionej debaty zarówno wśród polityków, publicystów, jak również naukowców. Niewątpliwie zaawansowanej eksploracji wymaga jej pełne zrozumienie naukowe, dlatego celem niniejszego tekstu jest ustalenie źródeł i natury samego zjawiska zróżnicowanej integracji, przegląd głównych koncepcji analitycznych i wskazanie podstawowych mechanizmów nim rządzących. Tekst, metodą analizy deskryptywnej, oferuje również wnioski na temat potencjalnych konsekwencji postępujących procesów zróżnicowania integracji europejskiej.
Competition and horizontal integration in maritime freight transport
2010
This paper develops a theoretical model for freight transport characterized by competition between means of transport (the road and maritime sectors), where modes are perceived as differentiated products. Competitive behavior is assumed in the road freight sector, and there are constant returns to scale. In contrast, the freight maritime sector is characterized by oligopolistic behavior, where shipping lines enjoy economies of scale. The market equilibrium where the shipping lines behave as profit maximizers, provides a first approximation to the determinants of market shares, profits, and user welfare. We then characterize the equilibrium when horizontal integration of shipping lines occur…
Semantic Web Services for Smart Devices in a “Global Understanding Environment”
2003
Various Web resources and services are usually assumed to be used and accessed by human users (current Web) or by software agents on behalf of human users (emerging Semantic Web). However industry emerges also a new group of “users”, which are smart industrial devices, robots or any other objects, which can be adapted to the (Semantic) Web environment. They would need special services for e.g. online condition monitoring, information provisioning, remote diagnostics, maintenance support, etc. The goal of this paper is to specify main requirements to Web services that automatically follow up and predict the performance and maintenance needs of field devices. Semantic Web enabled services for…