9,826 research outputs found
An exploration of embeddedness : with special reference to Japan : a thesis presented in partial fulfilment of the requirements for the degree of Master of Arts in Economics at Massey University
This thesis utilises the economic sociology concept of embeddedness as the theoretical underpinning to provide an alternative perspective to traditional explanations of economic growth. In general, the advantages of social embeddedness have been the main focus in the literature on the topic. The main purpose of this study is to explore, with special reference to Japan, how embedded relationships could both enable and hinder growth. The study examines the operation of embedded ties in four key areas: inter-firm interaction with an emphasis on the auto-industry; embedded relationships within the financial sector; networks in the internationalisation of firms and embeddedness between government and business, including a case study of the construction industry. It finds that while embedded ties have several advantageous facets, they also have the potential to be an impediment to growth, flexibility and adaptability to change. Network ties can expand and become so rigidly structured, especially in a Confucian society like Japan, as to become obstacles particularly in the face of changing economic circumstances. They can atrophy. This finding led to the development of the concluding notion of "atrophied embeddedness"
Emission of reactive oxygen species during degradation of iron gall ink
Iron gall inks are characterised by high contents of acids and transition metals, promoting degradation of cellulose due to hydrolysis and oxidation, respectively. Their chemical interaction with the environment is not well understood, especially in view of emissions of degradation products which could lead to spread of degradation processes.
In order to study the emissions, we employed gas chromatography/mass spectrometry following headspace micro-extraction, and liquid chromatography following hydroxyl radical scavenging with appropriate probes. We also studied chemiluminescence of cellulose affected by ink degradation.
We show that while the emissions of organic volatile degradation compounds by inks are less intense than those of surrounding paper, ink does promote the degradation of cellulose across big distances (from object to object). We were able to link this to emission of reactive oxygen species, probably hydrogen peroxide. Its emission from ink is considerably more intensive than from paper
Everything should be as simple as possible, but no simpler : towards a protocol for accumulating evidence regarding the active content of health behaviour change interventions
Supplemental data for this article can be accessed here: 10.1080/17437199.2013.848409Peer reviewedPublisher PD
A Review of Indigenous Food Crops in Africa and the Implications for more Sustainable and Healthy Food Systems
Indigenous and traditional foods crops (ITFCs) have multiple uses within society, and most notably have an important role to play in the attempt to diversify the food in order to enhance food and nutrition security. However, research suggests that the benefits and value of indigenous foods within the South African and the African context have not been fully understood and synthesized. Their potential value to the African food system could be enhanced if their benefits were explored more comprehensively. This synthesis presents a literature review relating to underutilized indigenous crop species and foods in Africa. It organizes the findings into four main contributions, nutritional, environmental, economic, and social-cultural, in line with key themes of a sustainable food system framework. It also goes on to unpack the benefits and challenges associated with ITFCs under these themes. A major obstacle is that people are not valuing indigenous foods and the potential benefit that can be derived from using them is thus neglected. Furthermore, knowledge is being lost from one generation to the next, with potentially dire implications for long-term sustainable food security. The results show the need to recognize and enable indigenous foods as a key resource in ensuring healthy food systems in the African continent
Complex maps without invariant densities
We consider complex polynomials for and
, and find some combinatorial types and values of such that
there is no invariant probability measure equivalent to conformal measure on
the Julia set. This holds for particular Fibonacci-like and Feigenbaum
combinatorial types when sufficiently large and also for a class of
`long-branched' maps of any critical order.Comment: Typos corrected, minor changes, principally to Section
Equilibrium states for potentials with \sup\phi - \inf\phi < \htop(f)
In the context of smooth interval maps, we study an inducing scheme approach
to prove existence and uniqueness of equilibrium states for potentials
with he `bounded range' condition \sup \phi - \inf \phi < \htop, first used
by Hofbauer and Keller. We compare our results to Hofbauer and Keller's use of
Perron-Frobenius operators. We demonstrate that this `bounded range' condition
on the potential is important even if the potential is H\"older continuous. We
also prove analyticity of the pressure in this context.Comment: Added Lemma 6 to deal with the disparity between leading eigenvalues
and operator norms. Added extra references and corrected some typo
The multipliers of periodic points in one-dimensional dynamics
It will be shown that the smooth conjugacy class of an unimodal map which
does not have a periodic attractor neither a Cantor attractor is determined by
the multipliers of the periodic orbits. This generalizes a result by M.Shub and
D.Sullivan for smooth expanding maps of the circle
Analisi della struttura spaziale e pianificazione del paesaggio agro-forestale: prospettive d’integrazione
L’ecologia del paesaggio offre un ampio spettro di tecniche d’analisi applicabili a cartografie di
uso e copertura del suolo per derivare informazioni quantitative su una varietà di aspetti della configurazione
spaziale del mosaico paesistico; tra gli altri, misure relative alla estensione, forma, e
livello di frammentazione spaziale delle superfici forestali (o di altre categorie di habitat naturali e
seminaturali) sono ritenute utili a rispondere a requisiti informativi tipicamente formulati nel contesto
di politiche di conservazione della biodiversità.
Analisi della struttura del paesaggio possono anche supportare l’individuazione di ambiti territoriali
omogenei per valore paesaggistico da individuare nel piano paesaggistico regionale, rispetto
ai quali pianificare obiettivi di qualità paesaggistica e prescrizioni per la tutela e l'uso del territorio
(vd. D. Lgs. 42/2004, Codice Urbani).
Le metodologie di analisi e il monitoraggio della struttura spaziale del paesaggio agro-forestale
sono ormai numerose e consolidate; tuttavia, solo di recente i risultati di questi studi hanno cominciato
a supportare e orientare politiche di pianificazione del territorio per la formulazione di strategie
di sviluppo territoriale differenziate in rapporto alle esigenze di conservazione degli habitat e
della biodiversità e di salvaguardia del paesaggio calibrate in base alle specificità dei singoli territori.
In particolare, il tema delle reti ecologiche, è divenuto oggetto specifico di pianificazione
all’interno degli strumenti di area vasta.
In questa prospettiva il presente contributo intende delineare alcune riflessioni su come raccordare
le conoscenze dell’ecologia del paesaggio alla formulazione di obiettivi di salvaguardia e valorizzazione
del paesaggio, tenendo conto della configurazione attuale del sistema delle pianificazioni
aventi competenza in materia di governo del paesaggio. Focalizzando l’attenzione su le problematiche
di governo del paesaggio più tipiche del paesaggio agro-forestale, vengono inoltre prospettate
alcune considerazioni sul possibile ruolo della gestione forestale come strumento
d’attuazione delle previsioni inerenti la tutela e la riqualificazione del paesaggio espresse dagli
strumenti di pianificazione di area vasta
Effects of NO2 and acetic acid on the stability of historic paper
This research investigates degradation of historic paper in polluted environments during long-term dark storage. In an innovative experiment, degradation rates at realistic pollution levels are compared with degradation rates in the absence of pollution, using a set of real historic papers. The most abundant pollutants in repositories in post-industrial environments are taken into account: acetic acid and nitrogen dioxide. Their action was assessed in terms of reduction of ‘handling’ (as defined by decrease in degree of polymerisation) and ‘display’ (as defined by discolouration) lifetimes. Extrapolations to room conditions enabled lifetime predictions in conditions that are comparable to a real archival or library repository environments while prediction uncertainties were analytically evaluated to assess the significance of conclusions. While 10 ppb of NO2 does reduce the handling lifetime of almost all types of paper, their predicted lifetimes were still assessed to be several millennia, with the exception of acidic paper. Acetic acid at concentrations that are typical for archival and library repositories (<100 ppb) has significantly less effect than NO2 while it does not affect display lifetimes. From a conservation management perspective, it needs to be addressed whether the predicted reductions in otherwise significant handling lifetimes are of real concern and whether air filtration in archival and library repositories is justified
A structured design technique for distributed programs
This report contains a non-formal motivation and description of ADL-d, a graphical design technique for parallel and distributed software. ADL-d allows a developer to construct an application in terms of communicating processes. The technique distinguishes itself from others by its use of highly orthogonal concepts, and support for automated code generation. Without being committed to one particular design method, ADL-d as a technique can be used from the early phases of application design through phases that concentrate on algorithmic design, and final implementation on some target platform. In this report, we discuss and motivate all ADL-d components, including recently incorporated features such as support for connection-oriented communication, support for modeling dynamically changing communication structures, and a formal semantical basis for each ADL-d component. Also, we discuss our ADL-d implementation, and place ADL-d in context by discussing some related work
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