Journal articles on the topic 'Flux de trading'

Transfer Entropy was applied to analyze the correlations and flow of information between 200,500 tweets and 23 of the largest capitalized companies during 6 years along the period 2013-2018. The set of tweets were obtained applying a text mining algorithm and classified according to daily date and company mentioned. We proposed the construction of a Sentiment Index applying a Natural Processing Language algorithm and structuring the sentiment polarity for each data set. Bootstrapped Simulations of Transfer Entropy were performed between stock prices and Sentiment Indexes. The results of the Transfer Entropy simulations show a clear information flux between general public opinion and companies’ stock prices. There is a considerable amount of information flowing from general opinion to stock prices, even between different Sentiment Indexes. Our results suggest a deep relationship between general public opinion and stock prices. This is important for trading strategies and the information release policies for each company.

U.S. trade policy is not what it used to be. Since the U.S. withdrawal from the Trans-Pacific Partnership in January 2017, Indo-Pacific trade relations have been in constant flux. It is not clear where U.S. trade policy will end up, particularly with regard to its relationship with China. However, the conclusion of two renegotiations of previous U.S. trade agreements can tell us generally about the new U.S. approach and what this means for our trading partners. I will discuss developments from the renegotiation of the Korea-U.S. free trade agreement (KORUS) and the U.S.-Mexico-Canada Agreement (USMCA) as a replacement for the North American Free Trade Agreement (NAFTA).

Forest carbon sequestration offset protocols have been employed for more than 20 years with limited success in slowing deforestation and increasing forest carbon trading volume. Direct measurement of forest carbon flux improves quantification for trading but has not been applied to forest carbon research projects with more than 600 site installations worldwide. In this study, we apply carbon accounting methods, scaling hours to decades to 28-years of scientific CO2 eddy covariance data for the Harvard Forest (US-Ha1), located in central Massachusetts, USA and establishing commercial carbon trading protocols and applications for similar sites. We illustrate and explain transactions of high-frequency direct measurement for CO2 net ecosystem exchange (NEE, gC m−2 year−1) that track and monetize ecosystem carbon dynamics in contrast to approaches that rely on forest mensuration and growth models. NEE, based on eddy covariance methodology, quantifies loss of CO2 by ecosystem respiration accounted for as an unavoidable debit to net carbon sequestration. Retrospective analysis of the US-Ha1 NEE times series including carbon pricing, interval analysis, and ton-year exit accounting and revenue scenarios inform entrepreneur, investor, and landowner forest carbon commercialization strategies. CO2 efflux accounts for ~45% of the US-Ha1 NEE, an error of ~466% if excluded; however, the decades-old coupled human and natural system remains a financially viable net carbon sink. We introduce isoflux NEE for t13C16O2 and t12C18O16O to directly partition and quantify daytime ecosystem respiration and photosynthesis, creating new soil carbon commerce applications and derivative products in contrast to undifferentiated bulk soil carbon pool approaches. Eddy covariance NEE methods harmonize and standardize carbon commerce across diverse forest applications including, a New England, USA regional eddy covariance network, the Paris Agreement, and related climate mitigation platforms.

Ancient evolutionary events are difficult to study because their current products are derived forms altered by millions of years of adaptation. The primary endosymbiotic event formed the first photosynthetic eukaryote resulting in both plants and algae, with vast consequences for life on Earth. The evolutionary time that passed since this event means the dominant mechanisms and changes that were required are obscured. Synthetic symbioses such as the novel interaction between Paramecium bursaria and the cyanobacterium Synechocystis PC6803, recently established in the laboratory, permit a unique window on the possible early trajectories of this critical evolutionary event. Here, we apply metabolic modelling, using flux balance analysis (FBA), to predict the metabolic adaptations necessary for this previously free-living symbiont to transition to the endosymbiotic niche. By enforcing reciprocal nutrient trading, we are able to predict the most efficient exchange nutrients for both host and symbiont. During the transition from free-living to obligate symbiosis, it is likely that the trading parameters will change over time, which leads in our model to discontinuous changes in the preferred exchange nutrients. Our results show the applicability of FBA modelling to ancient evolutionary transitions driven by metabolic exchanges, and predict how newly established endosymbioses, governed by conflict, will differ from a well-developed one that has reached a mutual-benefit state.

Combining ceramic membranes with ozonation and allowing ozone residual to contact the membrane surface is well known to control fouling, allowing for higher membrane fluxes. This means that the more robust, longer lasting and higher integrity ceramic material can potentially be used in water recycling in a cost competitive way. This paper presents additional results from a previously reported ozonation/ceramic membrane trial in Melbourne, Australia. The results assisted in understanding the cause of the high fluxes by quenching the residual ozone upstream of the membrane, to isolate its effects on organic species from those on the membrane. Ozone quenching was directly attributed to lost membrane performance which confirmed that ozone has a direct effect on the membrane which contributes to the higher fluxes. Tests to reduce cleaning chemical use (sodium hypochlorite) at high fluxes were also conducted. Sodium hypochlorite consumption generally was not significant, but trading better stability and higher fluxes for reduced chemical use needs to be justified. Ceramic membranes coupled with pre-ozonation exhibit unique properties in water treatment, offering potential advantages such as increased backwash disinfection, as well as higher flux rates or reduced chemical consumption.

At the heart of policies aimed at eliminating informal street trading seems to be a ‘marginalist’ perspective of the sector which does not see it as contributing to socio-economic development. What is not clear, however, is what underlies the financial dysfunctionality associated with the sector. Using a sample of 303 inner city street traders drawn from Johannesburg, a large South African city, tests of regression and mediated regression were used to test theory that predicts the existence of certain human capital relationships that may contribute to increased earnings for these traders. Findings suggest that certain human capital relationships in this sector may differ from those normally found in formal working contexts, in that although education is significantly associated with earnings, continuance satisfaction, experience and expenditure of effort, or hours worked per day, all do not mediate relationships between education and earnings. It is suggested that current policies might be keeping traders in a state of ‘flux’, where human capital transmission to financial performance might be unable to take root through seeking to ‘crack down’ on the sector instead of investing in the sector to enable its functionality, and hence its potential contribution to economic development.

AbstractTo overcome phosphorus (P) deficiency, about 80% of plant species establish symbiosis with arbuscular mycorrhizal fungi (AMF), which in return constitute a major sink of photosynthates. Information on whether plant carbon (C) allocation towards AMF increases with declining availability of the P source is limited. We offered orthophosphate (OP), apatite (AP), or phytic acid (PA) as the only P source available to arbuscular mycorrhiza (AM) (Solanum lycopersicum x Rhizophagus irregularis) in a mesocosm experiment, where the fungi had exclusive access to each P source. After exposure, we determined P contents in the plant, related these to the overall C budget of the system, including the organic C (OC) contents, the respired CO2, the phospholipid fatty acid (PLFA) 16:1ω5c (extraradical mycelium), and the neutral fatty acid (NLFA) 16:1ω5c (energy storage) at the fungal compartment. Arbuscular mycorrhizal (AM) plants incorporated P derived from the three P sources through the mycorrhizal pathway, but did this with differing C-P trading costs. The mobilization of PA and AP by the AM plant entailed larger mycelium infrastructure and significantly larger respiratory losses of CO2, in comparison with the utilization of the readily soluble OP. Our study thus suggests that AM plants invest larger C amounts into their fungal partners at lower P availability. This larger C flux to the AM fungi might also lead to larger soil organic C contents, in the course of forming larger AM biomass under P-limiting conditions.

“Unlike some Latin American mainland societies which still contain large numbers of indigenous peoples,” Jorge Duany observed, “Caribbean societies are immigrant societies almost from the moment of their conception.” Médéric-Louis-Élie Moreau de Saint- Méry likened the latter to “shapeless mixtures subject to diverse influences.” Their population, Dawn I. Marshall reminds us, “is to a large extent the result of immigration—from initial settlement, forced immigration during slavery, indentured immigration, to the present outward movement to metropolitan countries.” Throughout their history, David Lowenthal noted, limited resources and opportunities kept West Indian societies in a constant state of flux, impelling continuous transfers of people, technology, and institutions within the area. Despite the frequency and importance of these population movements, the bulk of scholarship on American migration history has traditionally concentrated on areas favored by European settlement. Moreover, the overwhelming quantity of research on immigration to the United States, Canada, Argentina, and Brazil has tended to overshadow the study of similar processes in other American regions. Due to its historical association with the arrival of involuntary settlers, migratory currents in the Caribbean have been too narrowly identified with bondage, penal labor and indentured workers. Nowhere is the imbalance more conspicuous than in the study of trans-Caribbean migratory streams during slavery. Discussions on pre-1838 population shifts have centered largely on inter-island slave trading and the exodus prompted by Franco-Haitian revolutionary activity in the Caribbean. The parallel legacy of motion hinted by Neville N.A.T. Hall's “maritime” maroons and Julius S. Scott's “masterless” migrants has attracted noticeably less attention.

Purpose This paper aims to describe the physical and numerical modeling of a new computational fluid dynamics solver for hypersonic flows in thermo-chemical non-equilibrium. The code uses a blend of numerical techniques to ensure accuracy and robustness and to provide scalability for advanced hypersonic physics and complex three-dimensional (3D) flows. Design/methodology/approach The solver is based on an edge-based stabilized finite element method (FEM). The chemical and thermal non-equilibrium systems are loosely-coupled to provide flexibility and ease of implementation. Chemical non-equilibrium is modeled using a laminar finite-rate chemical kinetics model while a two-temperature model is used to account for thermodynamic non-equilibrium. The systems are solved implicitly in time to relax numerical stiffness. Investigations are performed on various canonical hypersonic geometries in two-dimensional and 3D. Findings The comparisons with numerical and experimental results demonstrate the suitability of the code for hypersonic non-equilibrium flows. Although convergence is shown to suffer to some extent from the loosely-coupled implementation, trading a fully-coupled system for a number of smaller ones improves computational time. Furthermore, the specialized numerical discretization offers a great deal of flexibility in the implementation of numerical flux functions and boundary conditions. Originality/value The FEM is often disregarded in hypersonics. This paper demonstrates that this method can be used successfully for these types of flows. The present findings will be built upon in a later paper to demonstrate the powerful numerical ability of this type of solver, particularly with respect to robustness on highly stretched unstructured anisotropic grids.

Global concern over rising atmospheric CO2 concentrations has led to a proliferation of studies of carbon cycling in terrestrial ecosystems. Associated with this has been widespread adoption of the eddy covariance method to provide direct estimates of mass and energy exchange between vegetation surfaces and the atmosphere. With the eddy covariance method, fast-response instruments (10–20Hz) are typically mounted above plant canopies and the fluxes are calculated by correlating turbulent fluctuations in vertical velocity with fluctuations in various scalars such as CO2, water vapour and temperature. These techniques allow the direct and non-destructive measurement of the net exchange of CO2 owing to uptake via photosynthesis and loss owing to respiration, evapotranspiration and sensible heat. Eddy covariance measurements have a high temporal resolution, with fluxes typically calculated at 30-min intervals and can provide daily, monthly or annual estimates of carbon uptake or loss from ecosystems. Such measurements provide a bridge between ‘bottom-up’ (e.g. leaf, soil and whole plant measures of carbon fluxes) and ‘top-down’ approaches (e.g. satellite remote sensing, air sampling networks, inverse numerical methods) to understanding carbon cycling. Eddy covariance data also provide key measurements to calibrate and validate canopy- and regional-scale carbon balance models. Limitations of the method include high establishment costs, site requirements of flat and relatively uniform vegetation and problems estimating fluxes accurately at low wind speeds. Advantages include spatial averaging over 10–100ha and near-continuous measurements. The utility of the method is illustrated in current flux studies at ideal sites in northern Australia. Flux measurements spanning 3years have been made at a mesic savanna site (Howard Springs, Northern Territory) and semi-arid savanna (Virginia Park, northern Queensland). Patterns of CO2 and water vapour exchange at diurnal, seasonal and annual scales are detailed. Carbon dynamics at these sites are significantly different and reflect differences in climate and land management (impacts of frequent fire and grazing). Such studies illustrate the utility of the eddy covariance method and its potential to provide accurate data for carbon accounting purposes. If full carbon accounting is implemented, for ideal sites, the eddy covariance method provides annual estimates of carbon sink strength accurate to within 10%. The impact of land-use change on carbon sink strength could be monitored on a long-term basis and provide a valuable validation tool if carbon trading schemes were implemented.

St Helena Island, often regarded as one of the most remote places on earth, is an Overseas Territory of the United Kingdom and generally considered geographically as ‘part’ of Africa. Economically, the island is wholly dependent on British aid. Once important as a stop for trading ships for some 400 years, the island has suffered the same problems faced by many other small island economies: a lack of natural resources, diseconomies of scale, net outmigration, and a dependence on aid and remittances. Tourism has been earmarked as an important sector which has the potential to contribute significantly to the economy of St Helena, especially after the completion of the St Helena Airport. The purpose of this research reported here was to determine the level of tourism development on St Helena since its ‘opening up’ to the world after the first passenger flight touched down in 2017, by applying Butler’s tourism area life cycle model and Doxey’s irridex model. These models provided the framework for qualitatively determining the level of tourism development. An e-survey was conducted among residents about their expectations of tourism development. St Helena has been trapped in the involvement stage for decades while being inhibited by its remoteness and accessibility issues. It is clear from the evidence that some of the island’s tourism characteristics relate to the involvement stage, whereas others are synonymous with the development stage. It is thus reasonable to argued that St Helena currently lies in a flux between the involvement and development stages of the Butler model. The opening of the airport is conceivably the springboard necessary for leaving behind all the impeding features of the involvement stage.

In 1824, a group of London businessmen established the Australian Agricultural Company (AAC), Australia's oldest chartered company. Their prospectus listed amongst their objectives, after the raising of sheep and cattle, the production ‘at a more distant time, of Wine, Olive-Oil, Hemp, Flax, Silk, Opium, &c. as articles of export to Great Britain’. In 1828, a local manager reported that he thought that ‘if the labour of the Blacks can be procured for the operative part the culture [of opium] would likely prove profitable to the Company.’ And in 1833, the Australian manager of the company sent the London Board a sample of the first opium grown on company lands in the Hunter River area. The board had it evaluated by a pharmacist, who reported that it was ‘of fair, merchantable quality, about equal to Egyptian Opium. — It contains two thirds of the quantity of Morphia usually found in the best Turkey Opium. In this market, when Turkey Opium is worth 15s./ p lb., we have no doubt that such Opium as your Sample would sell for 14s/ p Ib. On the basis of this disappointing assessment, the Australian Agricultural Company abandoned opium growing — and opium growing was abandoned in Australia for another hundred and fifty years.

The global expansion in the development and cultivation of genetically modified (GM) crops has increased international concern about adventitious presence of GM materials in non-GM seeds and grains. GM events in canola, corn, soybean, cotton, flax, papaya, potato, squash, sugar beet, and tomato have received regulatory approval in Canada. However, GM cultivars are only in commercial production for canola, corn and soybean. More than 30 GM events have been approved in these three crops. Cases of unapproved adventitious presence of GM materials that have impacted grain trading and handling in Canada and other countries include StarLink™ corn, GT200 canola, GM canola in mustard and recently Bt10 corn. Some countries have established tolerance and traceability requirements for adventitious presence of GMOs, while others are in the process of developing or adopting legislation. The threshold for labeling of adventitious presence of approved GM material in non-GM grain varies from 0.9% (e.g., EU) to 5% (e.g., Japan). Progress has been made in the development of DNA- and protein-based GMO detection methods. However, only a limited number of these detection methods have been internationally validated. The challenges for detection methods include sampling, a lack of certified reference material, a lack of DNA sequence information for the design of event-specific primers, and the sheer number of individual events that may be present and tested for. Current efforts by ISO and CEN will be valuable for establishing harmonized and standardized GMO detection methods. Key words: List of GM events, cases of AP, tolerance, traceability, detection methods, challenges

The article describes the circumstances under which the Soviet Ukraine established trade relations with Czechoslovakian Republic in the early 1920’s. The analysis of historiography of this scientific problem recovered the absence of the researches in modern Ukrainian historical science on the relations between Czechoslovakia and Soviet Ukraine in the early 1920’s. It’s established that the source database, including archival documents, allows a comprehensive answer to the task in the study. The contractual legal framework, organizational forms of trade activities of the Soviet Ukraine in Czechoslovakia have been clarified. It is stated that the inability to compete with the Germans in the Russian market caused the Czechoslovakians’ great interest in the Ukrainian market. There was a positive experience of Czechoslovakian-Ukrainian economic relations even before the First World War, which was to guarantee the resumption of trade relations between the countries in the early 1920s. This had been facilitated by shipping on the Danube to the Black Sea. 'Trade Representative Office' considered the logistics of trade (demanded goods, ways of delivery, placement of warehouses, sanitary and technical control). Persons of sales representatives were established (Y. Novakovsky, M. Lomovsky, I. Girsa, V. Benesh). The role of the Soviet Ukraine 'Trade Representative Office' in Prague in the foreign trade activities of the Ukrainian Socialist Soviet Republic is revealed. The place of the Czechoslovakian market in the export and import operations of Soviet Ukraine has been determined. The interest of Czechoslovakian traders in Ukrainian raw materials, namely flax, hemp, wool and leather was noted. It is stated that the trade representatives of the Soviet Ukraine were exploring the possibility of selling other raw materials on the Czechoslovakian market, namely iron ore, coal, etc. It is found that the trading company has purchased in large quantities flour (wheat, rye), sugar (refinement, sand) and cereals (wheat, barley, rye, peas, oats). The Czechoslovakian traders and entrepreneurs were particularly interested in forming «mixed partnerships» with the Ukrainians (supplying railway equipment, making file sheets, production of medicines, glass and porcelain). Czechoslovakians also sought to obtain a concession for tractor cultivation of lands in Ukraine. At the same time, participation in the Ukrainian-Czechoslovakian trade «Vokoopspilka» was revealed. The participation of the Soviet Ukraine at the Prague International Exhibition in 1922 was covered, which became its first participation in international exhibitions.

AbstrakPesantren sebagai lembaga pendidikan yang menitikberatkan pada nilai-nilai keIslaman, sejak lama dikenal menjadi pusat pembinaan moral dan penjaga tradisi. Namun kini pesantren dihadapkan pada persoalan yang lebih kompleks seperti masuknya nilai-nilai asing sejalan dengan dinamika kebudayaan. Gagasan penelitian dimaksudkan untuk mengetahui model pembelajaran di Pesantren Dinniyah Puteri Padang Panjang dalam menyikapi persoalan multikultur dan perubahan nilai. Penelitian menggunakan teori eksplorasi, yakni menggali secara dalam berbagai cara dan model pembelajaran yang berlangsung di lingkungan pesantren dimaksud. Data dan informasi yang diperoleh melalui wawancara, observasi maupun studi pustaka menunjukkan bahwa kini pesantren tersebut tidak semata-mata menanamkan pendidikan moral dan etika keagamaan semata-mata, akan tetapi melakukan pembudayaan atau pengenalan pranata-pranata kebudayaan kepada santri sebagai upaya untuk membuka wawasan dan kesadaran akan pentingnya menguasai nilai-nilai budaya yang didukung oleh suku-suku bangsa sebagai landasan bagi pembangunan karakter. Keberhasilan Pesantren Dinniyah Puteri dalam mengembangkan pendidikan yang berbasis keagamaan (Islam), maupun pengenalan pranata kebudayaan, adalah cita-cita pendirinya Rahmah El Yunnusiyah yang ingin membuktikan bahwa perempuan itu punya peranan penting sebagai ibu pendidik, yang cakap dan adil, dan aktif serta bertanggungjawab dalam membangun ketahanan budaya masyarakatnya. AbstractAs an educational institution that focuses on Islamic values, pesantren (Islamic boarding school)has long been known to be the center of moral guidance and keeper of tradition. But now pesantren faces more complex issues such as the in flux of foreign values in line with the dynamics of culture. The study intends to acquire knowledge about learning model applied in Pesantren Dinniyah Puteri Padang Panjang in facing multicultural issues and changing values. The study uses the exploration theory, by digging up various ways and models of learning applied in the Pesantren. Data and information obtained through interviews, observation and bibliographic study indicated that today the Pesantren does not merely teach moral and religiousethics, but also introduce its pupils to cultural institutions as an effort to give an insight and to make them aware of the importance of mastering cultural values as a foundation fo rcharacter building. The success of Pesantren Dinniyah Puteri in developing Islam-based education and in introducing cultural institutions, are the ideals of its founder, Rahmah El Yunusiyah, who wants to prove that women have important role as competent, fair, active and responsible educator mothers inbuilding cultural resilience of their community.

Abstract: Advertising is the most visible element of modern marketing and an essential component of trading. However the activity is often accused by its critics of being intrusive and pervasive, and neither of these accusations can be refuted by a worldwide industry which spends billions of dollars each year reaching and persuading its target markets through daily bombardment of thousands of ads in most developed countries. However, when advertising does offend, mislead, or is untruthful, a structure needs to be in place in order to provide protection to all parties and, in most cases, a country's legal system is complemented by a self-regulatory scheme. The advertising self-regulatory scheme in Australia was dismantled at the end of 1996 and is currently in a state of flux as the industry grapples with the design of a new system. Canada's advertising self-regulation system, on the other hand, is unique, healthy, and successful; much can be learned from both failure and success. In this article a conceptual framework of "acceptable advertising'' is presented, discussed, and used to analyze the regulation of advertising in Australia and Canada, with a view to assisting in the formation of a new scheme in Australia. Résumé: La publicité est l'élément le plus visible du marketing moderne et une composante essentielle du commerce. Cependant, les critiques de cette activité l'accusent souvent d'être importune et omniprésente. Ces deux accusations sont difficiles à réfuter, étant donné qu'une industrie mondiale dépense des milliards de dollars à chaque année pour rejoindre et persuader ses marchés cibles, au moyen d'un bombardement quotidien de milliers de pubs dans la plupart des pays développés. C'est pourquoi, lorsque la publicité est offensive, trompeuse ou mensongère, il faut qu'une structure soit en place pour protéger toutes les parties en cause; en conséquence, dans la plupart des cas, un schéma d'auto-réglementation de la publicité complète le système légal d'un pays. L'Australie a démantelé son schéma d'auto-réglementation à la fin de 1996. Le pays se trouve actuellement dans une période transitoire, l'industrie s'efforçant de concevoir un nouveau système. Le système canadien d'auto-réglementation, quant à lui, est unique, bien portant et réussi. On peut beaucoup apprendre à partir de succès et d'échecs. Cet article présente et discute une conception de "publicité acceptable", qu'il utilise pour analyser la réglementation de la publicité en Australie et au Canada. L'objectif est d'aider à la formation d'un nouveau schéma en Australie.

<p>O artigo discute a alforria por substituição, modalidade em que o escravo trocava sua liberdade dando em troca outro escravo, tornando-se, pelo menos temporariamente, um senhor de escravos escravizado. Os dados derivam de mais de 400 casos de alforrias registradas nos tabeliães de Salvador, destacando a cidade como local no Brasil em que esse tipo de alforria foi mais usado. O artigo relaciona a substituição ao volume do tráfico transatlântico, à escravidão urbana e ao acesso a redes do tráfico pelos escravos que investiam em outros escravos. Uma das possíveis explicações para o fenômeno vem da natureza da escravidão na parte da África onde se originava a maioria dos cativos baianos, onde a posse de escravos por outros escravos era prática comum. Mas a relação senhor/escravo ganha o centro da cena. Sendo a concessão da alforria prerrogativa senhorial, da mesma forma o era a licença para cativos formarem uma poupança para comprar seus substitutos. Discute-se as negociações entre senhores e alforriados, apontando circunstâncias envolvidas. Vários aspectos da negociação são revelados através de exemplos concretos. O artigo traça, entre outros achados quantitativos, os perfis étnico (com predominância de nagôs) e por gênero (com predominância de mulheres), tanto entre substitutos como entre substituídos, vinculando esse resultado à direção do fluxo do tráfico e à dinâmica do trabalho de ganho na cidade.</p><p>“For Her Freedom, She Offers me a Slave”: Manumission by Substitution in Bahia, 1800-1850</p><p>The article discusses manumission by substitution, in which a slave bought his/her freedom giving another slave in exchange, thus becoming, temporarily at least, an enslaved slaveowner. The data derives from more than 400 letters of manumission registered by public notaries in Salvador, making the city a leader in this type of manumission in Brazil. The article relates substitutions to the volume of the transatlantic slave trade, to urban slavery, and access to slave trading networks by the slaves who acquired captives. A possible explanation for the phenomenon is that in the part of Africa where most Bahian slaves originated, possession of slaves by other slaves was a common practice. But in Bahia master-slave relations gains center stage. The concession of manumission was the master’s prerogative, and so was permission for a slave to amass savings and use them to buy another slave. Negotiations between masters and slaves are discussed on the basis of concrete cases. Among other quantitative findings, the article also traces the ethnic (predominantly Nagô) and gender (predominantly female) profiles of both the substitutes and those they substituted, linking the results to both the direction of the slave trade and the dynamics of urban slavery.</p>Slave trade and urban slavery | Manumission by substitution | Nineteenth-century Bahia, Brazil

A rhetoric of freedom characterises much of the literature dealing with online communities: freedom from fixed identity and appearance, from the confines of geographic space, and from control. The prevailing view, a combination of futurism and utopianism, is that the lack of order in cyberspace enables the creation of social spaces that will enhance personal freedom and advance the common good. Sherry Turkle argues that computer-mediated communication allows us to create a new form of community, in which identity is multiple and fluid (15-17). Marcos Novak celebrates the possibilities of a dematerialized, ethereal virtual architecture in which the relationships between abstract elements are in a constant state of flux (250). John Perry Barlow employs the frontier metaphor to frame cyberspace as an unmapped, ungoverned territory in which a romantic and a peculiarly American form of individualism can be enjoyed by rough and ready pioneers (“Crime” 460). In his 1993 account as an active participant in The WELL (Whole Earth ‘Lectronic Link), one of the earliest efforts to construct a social space online, Howard Rheingold celebrates the freedom to create a “new kind of culture” and an “authentic community” in the “electronic frontier.” He worries, however, that the freedom enjoyed by early homesteaders may be short lived, because “big power and big money” might soon find ways to control the Internet, just as they have come to dominate and direct other communications media. “The Net,” he states, “is still out of control in fundamental ways, but it might not stay that way for long” (Virtual Community 2-5). The uses of order and disorder Some theorists have identified disorder as a necessary condition for the development of healthy communities. In The Uses of Disorder (1970), Richard Sennett argues that “the freedom to accept and to live with disorder” is integral to our search for community (xviii). In his 1989 study of social space, Ray Oldenburg maintains that public hangouts, which constitute the heart of vibrant communities, support sociability best when activities are unplanned, unorganized, and unrestricted (33). He claims that without the constraints of preplanned control we will be more in control of ourselves and more aware of one another (198). More recently, Charles Landry suggests that “structured instability” and “controlled disruption,” resulting from competition, conflict, crisis, and debate, make cities less comfortable but more exciting. Further, he argues that “endemic structural disorder” requiring ongoing adjustments can generate healthy creative activity and stimulate continual innovation (156-58). Kevin Robins, too, believes that any viable social system must be prepared to accept a level of uncertainty, disorder, and fear. He observes, however, that techno-communities are “driven by the compulsion to neutralize,” and they therefore exclude these possibilities in favour of order and security (90-91). Indeed, order and security are the dominant characteristics that less idealistic observers have identified with cyberspace. Alexander Galloway explains how, despite its potential as a liberating development, the Internet is based on technologies of control. This control is exercised at the code level through technical protocols, such as TCP/IP, DNS, and HTM, that determine disconnections as well as connections (Galloway). Lawrence Lessig suggests that in our examination of the ownership, regulation, and governance of the virtual commons, we must take into account three distinct layers. As well as the “logical” or “code” layer that Galloway foregrounds, we should also consider the “physical” layer, consisting of the computers and wires that carry Internet communications, and the “content” layer, which includes everything that we see and hear over the network. In principle, each of these layers could be free and unorganized, or privately owned and controlled (Lessig 23). Dan Schiller documents the increasing privatization of the Net and argues that corporate cyberspace extends the reach of the market, enabling it to penetrate into areas that have previously been considered to be part of the public domain. For Schiller, the Internet now serves as the main production and control mechanism of a global market system (xiv). Checking into Habbo Hotel Habbo Hotel is an example of a highly ordered and controlled online social space that uses community and game metaphors to suggest something much more open and playful. Designed to attract the teenage market, this graphically intensive cartoon-like hotel is like an interactive Legoland, in which participants assemble a toy-like “Habbo” character and chat, play games, and construct personal environments. The first Habbo Hotel opened its doors in the United Kingdom in 2000, and, by September 2004, localized sites were based in a dozen countries, including Canada, the Unites States, Finland, Japan, Switzerland and Spain, with further expansion planned. At that time, there were more than seventeen million registered Habbo characters worldwide with 2.3 million unique visitors each month (“Strong Growth”). The hotel contains thousands of private rooms and twenty-two public spaces, including a welcome lounge, three lobbies, cinema, game hall, café, pub, and an extensive hallway. Anyone can go to the Room-O-Matic and instantly create a free guest room. However, there are a limited number of layouts to choose from and the furnishings, which must be purchased, have be chosen from a catalog of fixed offerings. All rooms are located on one of five floors, which categorize them according to use (parties, games, models, mazes, and trading). Paradoxically, the so-called public spaces are more restricted and less public than the private guest quarters. The limited capacity of the rooms means that all of the public spaces are full most of the time. Priority is given to paying Habbo Club members and others are denied entry or are unceremoniously ejected from a room when it becomes full. Most visitors never make it into the front lobby. This rigid and restricted construction is far from Novak’s vision of a “liquid architecture” without barriers, that morphs in response to the constantly changing desires of individual inhabitants (Novak 250). Before entering the virtual hotel, individuals must first create a Lego-like avatar. Users choose a unique name for their Habbo (no foul language is allowed) and construct their online persona from a limited selection and colour of body parts. One of two different wardrobes is available, depending on whether “Boy” or “Girl” is chosen. The gender of every Habbo is easily recognizable and the restricted wardrobe results in remarkably similar looking young characters. The lack of differentiation encourages participants to treat other Habbos as generic “Boys” or “Girls” and it encourages limited and predictable conversations that fit the stereotype of male-female interactions in most chat sites. Contrary to Turkle’s contention that computer mediated communication technologies expose the fallacy of a single, fixed, identity, and free participants to experiment with alternative selves (15-17), Habbo characters are permitted just one unchangeable name, and are capable of only limited visual transformations. A fixed link between each Habbo character and its registered user (information that is not available to other participants) allows the hotel management to track members through the site and monitor their behavior. Habbo movements are limited to walking, waving, dancing and drinking virtual alcohol-free beverages. Movement between spaces is accomplished by entering a teleport booth, or by selecting a location by name from the hotel Navigator. Habbos cannot jump, fly or walk through objects or other Habbos. They have no special powers and only a limited ability to interact with objects in their environment. They cannot be hurt or otherwise affected by anything in their surroundings, including other Habbos. The emphasis is on safety and avoidance of conflict. Text chat in Habbo Hotel is limited to one sixty-one-character line, which appears above the Habbo, floats upward, and quickly disappears off the top of the screen. Text must be typed in real time while reading on-going conversations and it is not possible to archive a chat sessions or view past exchanges. There is no way of posting a message on a public board. Using the Habbo Console, shorter messages can also be exchanged between Habbos who may be occupying different rooms. The only other narratives available on the site are in the form of official news and promotions. Before checking into the hotel, Habbos can stop to read Habbo Today, which promotes current offers and activities, and HabboHood Happenings, which offers safety tips, information about membership benefits, jobs (paid in furniture), contest winners, and polls. According to Rheingold, a virtual community can form online when enough people participate in meaningful public discussions over an extended period of time and develop “webs of personal relationships” (Virtual Community 5). By restricting communication to short, fleeting messages between individual Habbos, the hotel frustrates efforts by members to engage in significant dialogue and create a viable social group. Although “community” is an important part of the Habbo Hotel brand, it is unlikely to be a substantial part of the actual experience. The virtual hotel is promoted as a safe, non-threatening environment suitable for the teenagers is designed to attract. Parents’ concerns about the dangers of an unregulated chat space provide the hotel management with a justification for creating a highly controlled social space. The hotel is patrolled twenty-four hours a day by professional moderators backed-up by a team of 180 volunteer “Hobbas,” or guides, who can issue warnings to misbehaving Habbos, or temporarily ban them from the site. All text keyed in by Habbos passes through an automated “Bobba Filter” that removes swearing, racist words, explicit sexual comments and “anything that goes against the “Habbo Way” (“Bad Language”). Stick to the rules and you’ll have fun, Habbos are told, “break them and you’ll get yourself banned” (“Habbo Way”). In Big Brother fashion, messages are displayed throughought the hotel advising members to “Stay safe, read the Habbohood Watch,” “Never give out your details!” and “Obey the Habbo way and you’ll be OK.” This miniature surveillance society contradicts Barlow’s observation that cyberspace serves as “a perfect breeding ground for both outlaws and new ideas about liberty” (“Crime” 460). In his manifesto declaring the independence of cyberspace from government control, he maintains that the state has no authority in the electronic “global social space,” where, he asserts, “[w]e are forming our own Social Contract” based on the Golden Rule (“Declaration”). However, Habbo Hotel shows how the rule of the marketplace, which values profits more than social practices, can limit the freedoms of online civil society just as effectively as the most draconian government regulation. Place your order Far from permitting the “controlled disruption” advocated by Landry, the hotel management ensures that nothing is allowed to disrupt their control over the participants. Without conflict and debate, there are few triggers for creative activity in the site, which is designed to encourage consumption, not community. Timo Soininen, the managing director of the company that designed the hotel, states that, because teenagers like to showcase their own personal style, “self-expression is the key to our whole concept.” However, since it isn’t possible to create a Habbo from scratch, or to import clothing or other objects from outside the site, the only way for members to effectively express themselves is by decorating and furnishing their room with items purchased from the Habbo Catalogue. “You see, this,” admits Soininen, “is where our revenue model kicks in” (Shalit). Real-world products and services are also marketed through ads and promotions that are integrated into chat, news, and games. The result, according to Habbo Ltd, is “the ideal vehicle for third party brands to reach this highly desired 12-18 year-old market in a cost-effective and creative manner” (“Habbo Company Profile”). Habbo Hotel is a good example of what Herbert Schiller describes as the corporate capture of sites of public expression. He notes that, when put at the service of growing corporate power, new technologies “provide the instrumentation for organizing and channeling expression” (5-6). In an afterword to a revised edition of The Virtual Community, published in 2000, Rheingold reports on the sale of the WELL to a privately owned corporation, and its decline as a lively social space when order was imposed from the top down. Although he believes that there is a place for commercial virtual communities on the Net, he acknowledges that as economic forces become more entrenched, “more controls will be instituted because there is more at stake.” While remaining hopeful that activists can leverage the power of many-to-many communications for the public good, he wonders what will happen when “the decentralized network infrastructure and freewheeling network economy collides with the continuing growth of mammoth, global, communication empires” (Virtual Community Rev. 375-7). Although the company that built Habbo Hotel is far from achieving global empire status, their project illustrates how the dominant ethos of privatization and the increasing emphasis on consumption results in gated virtual communities that are highly ordered, restricted, and controlled. The popularity of the hotel reflects the desire of millions of Habbos to express their identities and ideas in a playful environment that they are free to create and manipulate. However, they soon find that the rules are stacked against them. Restricted design options, severe communication limitations, and fixed architectural constraints mean that the only freedom left is the freedom to choose from a narrow range of provided options. In private cyberspaces like Habbo Hotel, the logic of the market rules out unrestrained many-to-many communications in favour of controlled commercial relationships. The liberating potential of the Internet that was recognized by Rheingold and others has been diminished as the forces of globalized commerce impose their order on the electronic frontier. References “Bad Language.” Habbo Hotel. 2004. Sulake UK Ltd. 15 Apr. 2004 http://www.habbohotel.co.uk/habbo/en/help/safety/badlanguage/>. 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Hewlett-Packard. 1 Apr. 2004 http://www.cooltown.com/cooltown/mpulse/0302-habbo.asp>. “Strong Growth in Sulake’s Revenues and Profit – Habbo Hotel Online Game Will Launch in the US in September.” 3 Sept. 2004. Sulake. Sulake Corp. 9 Jan. 2005 http://www.sulake.com/>. Turkle, Sherry. Life on the Screen: Identity in the Age of the Internet. New York: Simon, 1997. Citation reference for this article MLA Style McGuire, Mark. "Ordered Communities." M/C Journal 7.6 (2005). echo date('d M. Y'); ?> <http://journal.media-culture.org.au/0501/06-mcguire.php>. APA Style McGuire, M. (Jan. 2005) "Ordered Communities," M/C Journal, 7(6). Retrieved echo date('d M. Y'); ?> from <http://journal.media-culture.org.au/0501/06-mcguire.php>.