scholarly journals FLOATING BREAKWATER PERFORMANCE

1976 ◽  
Vol 1 (15) ◽  
pp. 158
Author(s):  
Bruce H. Adee
Keyword(s):  
Theoretical Model ◽  
The Other ◽  
The Pacific ◽  
Floating Breakwater ◽  
Friday Harbor ◽  
Rubble Mound ◽  
The Cost ◽  
The University ◽  
Floating Breakwaters ◽  
Rubble Mound Breakwaters

The Pacific Northwestern United States contains large areas of protected waters with abundant recreational boating opportunities. The area also supports many commercial fishermen who use small boats in their fishing operations . As a result, there is a large demand for sheltered moorage for all these vessels. Traditionally, this demand has been accommodated by constructing rubble-mound breakwaters for marina protection. At present, most of the sites where rubble-mound breakwater construction is economically feasible have been used. Conditions at many of the remaining areas"for marina development are unsuitable for traditional techniques of marina construction. In general, the cost is too great because the water is too deep, or the environmental degradation resulting from marina development is unacceptable. To satisfy the demand for moorage, while at the same time overcoming the other restrictions, floating breakwaters have been employed at many new marina facilities. In order to optimize the configuration of floating breakwaters and to overcome the problems which have been encountered with their use, the University of Washington has undertaken a continuing program of research. The aim of this research has been to monitor the performance of existing breakwaters and to develop a theoretical model to predict performance. Using the theoretical model supplemented with appropriate model-scale tests, a series of parametric variations will be tested to determine the effects of these variations on breakwater performance. At present, several comparisons of the theory with model tests and full-scale performance have been reported by Adee (1975a, 1975b, 1976). This report is a continuation of this effort incorporating data obtained at the Friday Harbor, Washington floating breakwater.

scholarly journals X.—The Aborigines of Tasmania. Part III. The Hair of the Head compared with that of other Ulotrichi and with Australians and Polynesians

1915 ◽  
Vol 50 (2) ◽  
pp. 309-347 ◽  
Author(s):  
William Turner
Keyword(s):  
New Guinea ◽  
The Other ◽  
Malay Peninsula ◽  
The Pacific ◽  
University Of Edinburgh ◽  
The Individual ◽  
The University

A number of years ago I began to form and arrange in the Anatomical Museum of the University of Edinburgh a collection of the hair of the head to illustrate the varieties in colour and character which exist in the Races of Men. In a classification of the races based on the colour and characters of the hair, anthropologists have usually adopted the suggestion made by Bory de St Vincent, and have divided them into two groups: Leiotrichi, with straight, smooth hair; and Ulotrichi, with woolly or frizzly hair. Each of these again is capable of subdivision.In this memoir I intend especially to examine the Ulotrichi, which comprise two well-marked subdivisions. In one the hair is very short, and is arranged in small spiral tufts, the individual hairs in which are twisted on each other, a mat-like arrangement of compact spiral locks closely set together being the result. In the other the hair is moderately long, the locks are slender, curled or spirally twisted in a part of their length and terminate at the free end in a frizzly bush-like arrangement. Ulotrichous hair is found in various African races, in the aborigines of Tasmania, New Guinea, the Melanesian Islands in the Pacific, in the Negritos of the Malay Peninsula and of some of the islands of the Asiatic Archipelago. The Leiotrichi are Australians, Polynesians, Mongols, Malays, Indians, Arabs, Esquimaux and Europeans.

scholarly journals PROTOTYPE EXPERIENCE WITH RUBBLE MOUND BREAKWATERS

1986 ◽  
Vol 1 (20) ◽  
pp. 153
Author(s):  
K.J. MacIntosh ◽  
W.F. Baird
Keyword(s):  
United States ◽  
Cost Savings ◽  
The United States ◽  
Cost Structure ◽  
Simple Construction ◽  
Significant Cost ◽  
Prototype Experience ◽  
Rubble Mound ◽  
The Cost ◽  
Rubble Mound Breakwaters

At the 19th ICE Conference in Houston in 1984 an alternative concept for the design of rubble mound breakwaters was introduced. This concept has the objective of providing a least cost structure by optimizing the use of locally available materials and utilizing simple construction procedures. Contractors' bids demonstrated that significant cost savings could be achieved, when compared to the cost of traditional designs. Considerable prototype experience has now been obtained with this concept of breakwaters. Breakwaters have been built using the concept in Canada, the United States, and Iceland since 1984 and have been subjected to storms and ice action. Prototype observations have supported the performance predicted during the design process. In this paper surveys of a breakwater taken after construction and after storm action are presented. In addition to wave action, this breakwater has also been subjected to extensive ice action. The response of the breakwater has been monitored and observed and is discussed.

scholarly journals DESIGN OF BREAKWATERS

2010 ◽  
Vol 1 (1) ◽  
pp. 24
Author(s):  
Kenneth Kaplan ◽  
Henry E. Pape
Keyword(s):  
San Francisco ◽  
Pacific Coast ◽  
Vertical Wall ◽  
Type A ◽  
Corps Of Engineers ◽  
Composite Type ◽  
Mound Construction ◽  
The Pacific ◽  
Rubble Mound ◽  
Rubble Mound Breakwaters

As the name implies, a breakwater is a barrier constructed to break up and disperse heavy seas, to shield the interior waters of a harbor from winds and waves, and to provide shelter and protection for ships, shipping facilities, and other harbor improvements. Breakwaters are structures used to improve a naturally protected (sheltered) harbor or to create a sheltered harbor at locations required for shipping, refuge, recreation, etc. Breakwaters may be roughly divided into two main groups, the vertical-wall type and the rubble-mound type. A possible third group, the composite type, consists of the wall-type placed upon a rubble-mound foundation. Since the experience of the San Francisco District, Corps of Engineers, has been limited to the construction of rubble-mound breakwaters and jetties in as much as practically all breakwaters on the Pacific Coast are of rubble-mound construction, the second half of this paper has been limited to the consideration of this type of structure. The first half of the paper discusses general subjects (choice of location and type of breakwater, etc.) relevant to both types. Until recently, the design and construction of breakwaters was largely an empirical "art" based mainly on the designer's observations of the performance of previously constructed breakwaters. Great latitude was given personal discretion and judgment, since those factors which might influence or standardize design were little understood.

A Brazilian study of the sustainability of telemedicine centres

2009 ◽  
Vol 15 (3) ◽  
pp. 159-159
Author(s):  
Rosângela Simões Gundim ◽  
Chao Lung Wen
Keyword(s):  
Primary Care ◽  
Theoretical Model ◽  
Pilot Study ◽  
Graphical Representation ◽  
Structured Interview ◽  
The Other ◽  
Clinical Services ◽  
Government Grants ◽  
The University

We have investigated the factors which make telemedicine centres sustainable. A pilot study was carried out at two university telemedicine centres in Brazil: the Faculty of Odontology and the Faculty of Medicine at the University of São Paulo. Both centres were supported by long-term government grants. One centre delivered clinical telemedicine services in audiology and odontology, and the other centre delivered clinical services in dermatology, surgery, cardiology, medicine and second-opinions for primary care. A semi-structured interview script was drawn up and after consensus among four referees, interviews were carried out with one telemedicine coordinator from each centre. Analysis of the results showed that telemedicine sustainability is a multidimensional matter, not simply a financial one. The results of the interviews led us to refine our construct of telemedicine sustainability into seven different macro-group perspectives. These were: Institutional, Functional, Scientific, Financial, Renovation, Relational and Social. This construct allowed us to convert strategic and logical factors into a graphical representation. This graphical representation provides a snapshot of the performance of a telemedicine centre at a particular moment. The next step is to create a theoretical model of sustainability for testing in ten other centres in different regions of Brazil, including Amazonia.

Is More Better? The Divide between Retailer’s and Manufacturers’ Preferences for Reviews and Review Monetization

MIS Quarterly ◽  
2021 ◽  
Vol 45 (3) ◽  
pp. 1349-1410
Author(s):  
Haozhao Zhang ◽  
◽  
Zhe (James) Zhang ◽  
Srinivasan Raghunathan ◽  
◽  
...  
Keyword(s):  
Theoretical Model ◽  
The Other ◽  
Product Reviews ◽  
Case Scenario ◽  
Large Numbers ◽  
Research Stream ◽  
Dominant Retailer ◽  
Product Sales ◽  
The Cost ◽  
The Impact

Research on online product reviews has examined a variety of issues ranging from reviewers’ motivation to write reviews to the impact of reviews on product sales. Implicit in this research stream is the notion that more reviews are better for sellers and consumers. However, it is unclear whether both retailers, who control the review platform, and manufacturers, whose products are reviewed, prefer more reviews over fewer reviews. Using a game theoretical model of a context in which a dominant retailer sells competing products from two manufacturers to consumers who are uncertain about product quality and fit, we show that the retailers’ and manufacturers’ preferences regarding the number of reviews are not always aligned. The nature of misalignment depends on whether the quality or the fit is more dominant in terms of consumers’ evaluation of products. If generating reviews do not cost anything, we found that additional reviews always benefit the retailer; however, if the number of reviews exceeds a threshold in the quality-dominates-fit case scenario, they may be harmful to the manufacturer. On the other hand, if the retailer incurs a sufficiently high cost to generate reviews, the retailer may prefer to have fewer reviews. We show that retailers can exploit the divide between retailers’ and manufacturers’ preferences for reviews and monetize reviews by charging a fee to the manufacturers in return for a guarantee on the number of reviews that they generate. We show that the product type and review platform design play a significant role in the attractiveness of review monetization for retailers. Even if reviews are monetized, we determined that retailers’ revenue from “selling” reviews to manufacturers does not exceed the cost of generating reviews, implying that the benefit from reviews is driven the positive impacts of reviews on the retailer’s core business of selling products to consumers. However, in the fit-dominates-quality case scenario, retailers do not prefer large numbers of reviews whereas manufacturers do. In this case, we found that retailers are unable to exploit the misalignment between retailers’ and manufacturers’ preferences for reviews through review monetization.

Editor's Introduction to Part Two, "Crossing the Rivers of Time and Oceans of Culture: The Uses of Film in American-East Asian Relations"

2011 ◽  
Vol 18 (1) ◽  
pp. 1-9
Author(s):  
Charles Hayford
Keyword(s):  
Cultural Difference ◽  
East Asian ◽  
Historical Change ◽  
The Other ◽  
Theme Issue ◽  
The Public ◽  
The Past ◽  
Analytic Truth ◽  
The Pacific ◽  
The Cost

AbstractThe Editor's Introduction to Part One of this two-part theme issue described the articles and offered thoughts on ways of looking at film in American-East Asian relations. This essay, the Introduction to Part Two, weighs the rewards and problems of using fiction film to represent history and other cultures. The dilemma inherent in fiction is that if we portray the past and foreign cultures as being "just like us," we gain immediacy and connection, but at the cost of ignoring cultural difference and historical change. On the other hand, if we respect the "strangeness of the past," we gain authenticity, analytic truth, and responsibility but invite sterility, academic solipsism, and isolation from the public. The essay concludes with a list of questions on how to learn about art, politics, and business when we compare film cultures and national projects across the Pacific.

scholarly journals DESTRUCTION CRITERIA FOR RUBBLE-MOUND BREAKWATERS

1968 ◽  
Vol 1 (11) ◽  
pp. 49 ◽  
Author(s):  
Adelkis J. Rogan
Keyword(s):  
General Purpose ◽  
Wave Action ◽  
The Other ◽  
Periodic Waves ◽  
Cover Layer ◽  
Storm Duration ◽  
Equilibrium Profile ◽  
Rubble Mound ◽  
The One ◽  
Rubble Mound Breakwaters

The general purpose of the author's research undertaken in the "Laboratoxre National d'Hydraulique" was to study wave action on rubble-mound breakwaters with regular (periodic) waves on the one hand and irregular (random) wind generated waves on the other, and to compare the effects of these two types of waves by use of the storm duration t. With a first series of periodic waves experiments we have obtained the destruction of the breakwater's cover-layer for different storm durations t, by varying H and T. The mass of armor units remained constant. The angle of the slope, according to the seaward equilibrium profile could be considered as constant.

scholarly journals OVERTOPPING OF RUBBLE-MOUND BREAKWATERS BY IRREGULAR WAVES

1976 ◽  
Vol 1 (15) ◽  
pp. 157
Author(s):  
Yvon Ouellet ◽  
Pierre Eubanks
Keyword(s):  
Wave Train ◽  
The Other ◽  
Irregular Waves ◽  
Regular Wave ◽  
Regular Waves ◽  
Irregular Wave ◽  
Wave Trains ◽  
Rubble Mound ◽  
The Stability ◽  
Rubble Mound Breakwaters

This paper describes the results of an experimental study on the effect of waves on rubble-mound breakwaters, wave transmission subsequent to wave overtopping, the stability of the three sides subjected to wave action and the effect of the breakwaters on waves. Two different rubble-mound breakwaters were tested, i. e. one with a rigid impermeable crest and the other with a flexible permeable crest. Tests were performed with both regular and irregular wave train systems. To obtain the simulated irregular wave trains, four theoretical spectra were chosen: Neumann, Bretschneider, Moskowitz, and Scott. Results obtained from tests with irregular wave trains were compared to those obtained from tests with regular wave trains. It was found that more information was obtained on the behaviour of the structure when it was submitted to the attack of irregular waves than when submitted to regular waves, and that the use of irregular wave trains gave more interesting results.

Integrating Legacy Laboratory Information Systems into a Client-Server World: The University of Minnesota Clinical Workstation (CWS) Project

1995 ◽  
Vol 34 (03) ◽  
pp. 289-296 ◽  
Author(s):  
B. H. Sielaff ◽  
D. P. Connelly ◽  
K. E. Willard
Keyword(s):  
Information Systems ◽  
Clinical Decision ◽  
Database Management System ◽  
University Of Minnesota ◽  
Client Server ◽  
Clinical Workstation ◽  
Future Hospital ◽  
The Cost ◽  
The University ◽  
Laboratory Information Systems

Abstract:The development of an innovative clinical decision-support project such as the University of Minnesota’s Clinical Workstation initiative mandates the use of modern client-server network architectures. Preexisting conventional laboratory information systems (LIS) cannot be quickly replaced with client-server equivalents because of the cost and relative unavailability of such systems. Thus, embedding strategies that effectively integrate legacy information systems are needed. Our strategy led to the adoption of a multi-layered connection architecture that provides a data feed from our existing LIS to a new network-based relational database management system. By careful design, we maximize the use of open standards in our layered connection structure to provide data, requisition, or event messaging in several formats. Each layer is optimized to provide needed services to existing hospital clients and is well positioned to support future hospital network clients.

Eurasian "Theory of Economy Management" as an Organic Part of the Russian Economic School

2003 ◽  
pp. 95-110
Author(s):  
M. Voeykov
Keyword(s):  
Economic Development ◽  
Theoretical Model ◽  
Initial Step ◽  
State Regulation ◽  
Soviet Economy ◽  
The Other ◽  
Large Share ◽  
Organic Part ◽  
Two Sides ◽  
Enterprise Activity

The original version of "the theory of economy management", developed in the 1920s by Russian economists-emigrants who called themselves "Eurasians" (N. Trubetskoy, P. Savitskiy, etc.) is analyzed in the article. They considered this theory to be the basis of the original Russia's way of economic development. The Eurasian theory of economy management focuses on two sides of enterprise activity: managerial as well as social and moral. The Eurasians accepted the Soviet economy with the large share of state regulation as the initial step of development. On the other hand they paid much attention to the private sector activity. Eurasians developed a theoretical model of the mixed economy which can be attributed as the Russian economic school.

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