1,302 research outputs found
Corpus Juris Canonici
No full textSign.: [ ], a-n, o, A-Z, 2A-2Z, 3A-3Z, 4A-4LPort. con grav. calcTexto a dúas co
Una estensione equidistante di codici lineari di ordine variabile
No full textIn this paper we give a method to construct an «extension» C* of a linear variable order code C such that: i) C* is an equidistant code; ii) C* is MDS if (and only if) C is MDS
A construction of sets of pairwise orthogonal F-squares of composite order
No full textIn this note complete systems of orthogonal F-squares are constructed in which the number of symbols is variable and the order n is a prime power. Further, we give an extension of the MacNeish theorem by constructing systems of orthogonal F-squares of composite order n = (p1^e1)•(p2^e2)•...•(pm^em) having a variable number of symbols: such construction improves the results that have been reached so far
A new construction of doubly diagonal orthogonal Latin squares
No full textWe give a new simple construction of pairs of doubly diagonal orthogonal Latin squares of order n, DDOLS(n), for some n=3k including the case n=12
The impact of financial innovation
No full textFinancial innovation refers both to technological advances which facilitate access to information, trading and means of payment. The demand for money is very crucial in the conduct and determination of the effectiveness of monetary policy. This study attempts to analyse whether financial innovations that occurred in Nigeria after the Structural Adjustment Programme of 1986 has affected the demand for money in Nigeria using the Engle and Granger Two-Step Cointegration technique. Though the study revealed that demand for money conforms to the theory that income is positively related to the demand for cash balances and interest rate has an inverse relationship with the demand for real cash balances, it was also discovered that the financial innovations introduced into the financial system have not significantly affected the demand for money in Nigeria. Based on the results obtained, a policy of attracting more participants (non-government) and private sector funds to the money market is necessary as this will deepen the market and make the market more dynamic and amenable to monetary policy. Therefore, the study concludes that financial innovation has had no significant impact on the demand for money in Nigeria and the SAP era financial liberalization policies have had no indirect impact on the demand for money as well
A construction of pairs and triples of k-incomplete orthogonal arrays
No full textIn this note we construct pairs of orthogonal IA(q+hk,hk) where q is a prime power, k is a proper divisor of q-1 and h≤s+1 for a suitable integer s (depending on q). Further we construct triples of mutually orthogonal IA((3^u)+2h,2h) with h≤s+1 for a suitable integer s
P-type SiOx front emitters for Si heterojunction solar cells
No full textWe have applied p-type nanocrystalline silicon-oxide (p-SiOx) as front emitter in silicon heterojunction solar cells. The evolution of structural, optical, and electrical properties of p-SiOx as a function of the carbon-dioxide/silane flow rate ratio used in the gas mixture has been investigated, comparing also the film characteristics with those of p-type amorphous and nanocrystalline silicon thin films often used in the cells. Selected p-SiOx films with suitable electrical properties have been inserted in silicon heterojunction solar cells based on n-type FZ c-Si <100> wafers, passivated with ultrathin intrinsic a-Si:H buffers. Improvement of all the photovoltaic parameters has been observed with the emitter with higher oxygen content. The results have been correlated with the increased transparency and enhanced field-effect passivation obtained thanks to the presence of sufficient carbon dioxide in the gas mixture for the p-SiOx layer growth
Microservice Performance in Container- and Function-as-a-Service Architectures
No full textFunction-as-a-Service (FaaS) is a new cloud-based computing model that promises a more cost-efficient deployment of microservices with respect to other cloud paradigms, like Container-as-a-Service (CaaS). However, requests served under a FaaS approach often experience a cold start condition, that occurs when the execution of an inactive function occurs for the first time and a container environment has to be set up afresh. In such cases, performance deteriorates and response times increase. This paper proposes an analysis of the performance of the Function-as-a-Service model for two single offered microservices. Specifically, we carry out a performance evaluation of the Function-as-a-Service model, implemented through OpenWhisk, using as a baseline for comparison the Container-as-a-Service approach, implemented with Docker. Our analysis focuses on metrics related to the response time and to the usage of main server resources such as CPU and memory. For the performance comparison, we exploited two different microservices based on face recognition and image conversion, respectively, in order to evaluate the performance over popular and modern kinds of services included in artificial intelligence and multimedia applications
Analysis of peer-to-peer systems: workload characterization and effects on traffic cacheability
No full textPeer-to-peer file sharing networks have emerged as a new popular application in the Internet scenario. In this paper, we provide an analytical model of the resources size and of the contents shared at a given node. We also study the composition of the content workload hosted in the Gnutella network over time. Finally, we investigate the negative impact of oversimplified hypotheses (e.g., the use of filenames as resource identifiers) on the potentially achievable hit rate of a file sharing cache. The message coming out of our findings is clear: file sharing traffic can be reduced by using a cache to minimize download time and network usage. The design and tuning of the cache server should take into account the presence of different resources sharing the same name and should consider push-based downloads. Failing to do so can result in reduced effectiveness of the caching mechanism
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