Academic literature on the topic 'Tide guages'
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Journal articles on the topic "Tide guages"
1
Powell, George V. N. "Habitat Use by Wading Birds in a Subtropical Estuary: Implications of Hydrography." Auk 104, no. 4 (October 1, 1987): 740–49. http://dx.doi.org/10.1093/auk/104.4.740.
Full textAbstract:
Abstract The dynamics of foraging habitat use by long-legged wading birds was analyzed with respect to water-level fluctuation patterns in Florida Bay. Wading-bird presence at four sites situated to sample the heterogeneity of the bay was quantified by repeated surveys collected throughout the day and year. Models for habitat availability were generated using water-level data collected from continuous recorders, staff guages, and habitat profile maps. These models were tested against the survey data. Roseate Spoonbills (Ajaia ajaja) foraged on the study areas primarily at night. Great Blue Herons (Ardea herodias) fed both day and night, but primarily at night where the tidal range was small. Great Egrets (Casmerodius albus), Snowy (Egretta thula) and Reddish (E. rufescens) egrets, Little Blue (E. caerulea) and Tricolored (E. tricolor) herons, and White Ibis (Eudocimus albus) fed during daylight. Where tidal range was small (<5 cm) diurnal species fed throughout the day. Florida Bay has a pronounced annual water-level cycle that causes monthly mean water levels to vary by as much as 30 cm between October (high) and May (low). Models derived from hydrology data predicted that this seasonal variation in water level would have a major impact on habitat availability, particularly where tidal flux was small. The predictions were supported by survey data. At sites with minor tides, most wading-bird species had a cycle in seasonal abundance that correlated with seasonal changes in water level; only the tallest species, Ardea herodias, was uniformly present throughout the year. The large daily range in tide (x̄ = 80 cm) afforded year-round access to foraging habitat, and these abundance patterns did not exist. The seasonal variability in habitat availability has major management implications because the maintenance of stable wading-bird populations depends on the availability of alternative foraging sites when water levels are high. Historically, these sites have tended to be targeted for human development.
2
Pérez Molina, Alexandra. "Riesgo de Sodicidad en los Suelos de Cantón Milagro, Guayas-Ecuador en Época de Estiaje." Revista Politécnica 42, no. 2 (January 31, 2019): 15–22. http://dx.doi.org/10.33333/rp.vol42n2.899.
Full textAbstract:
Dada la importancia de la producción agrícola del suelo del cantón Milagro, en este artículo se plantea como objetivo estudiar el efecto de las bajas precipitaciones y el uso de riego complementario, en la concentración de sales en los suelos del cantón. El problema de las inundaciones y la sequía ponen en riesgo las actividades agrícolas de la zona que ocupan un 95,5% del suelo del cantón, ya que pueden provocar la pérdida de suelos fértiles . La determinación del RAS relación de adsorción de sodio en todas sus modificaciones, y el Índice de Saturación en los suelos, calculados a partir de las mediciones de la concentración de cationes, aniones, conductividad eléctrica (CE) y pH en muestras de aguas tomadas en 32 estaciones a lo largo de la microcuenca del río Milagro a juicio del experto y para los fines específicos de la investigación, en junio de 2013 con un promedio de precipitaciones de 74,5 mm, permitirá proponer alternativas para evitar la sodicidad de los suelos del cantón. En estudios realizados sobre la relación agua-suelo se ha demostrado que es posible predecir el riesgo de sodicidad de los suelos por el uso de aguas de alta salinidad, como es el caso de algunas muestras de aguas en el cantón Milagro. Los valores más críticos se obtuvieron con el RASaj, el río Belin tiene una clasificación S2 según Richard et. al. (1959), aguas provenientes de bananeras, lo que significa que la precipitación de la calcita es un factor influyente, son zonas de conos de esparcimiento. Existen zonas clasificadas como S3 y S4 en la zona de Banco de Arena, situación que indica una elevada cantidad de sodio en el agua de riego lo que puede causar que los suelos alcancen un nivel peligroso de sodio y para una agricultura sostenible se requiere de lavados y un muy buen drenaje.
3
Bédard-Rubin, Jean-Christophe. "Senate Reform and the Political Safeguards of Canadian Federalism in Québec." Constitutional Forum / Forum constitutionnel 28, no. 1 (March 20, 2019): 19–28. http://dx.doi.org/10.21991/cf29375.
Full textAbstract:
Unlike in Canada, the doctrine of political safe-guards of federalism is a tantalizing presence in American constitutional law that changing tides and moods have never completely submerged. The core idea is simple: political institutions in the United States have been designed to ensure that interests of the states are represented in the federal decision-making process. Thus, the judiciary does not need to intervene to police the federal division of powers.
4
Elton, Robb. "The Absentee Formal Education in Prison Guard Hiring Traditions: Extrapolating Pareto Distance to Inform Personnel Optimality for Corrections Agencies." Journal of Management and Strategy 13, no. 1 (May 10, 2022): 39. http://dx.doi.org/10.5430/jms.v13n1p39.
Full textAbstract:
The educated corrections officer/guard is sufficiently schooled in the relevant social science area and possesses sufficient theoretical knowledge such that the quality of work, purpose, and goals of incarceration could be met. Thus, the desire to bring professionalism into the field of corrections has been recognized for many decades, particularly after the Attica tragedy of 1971. However, in pursuit of adequate staffing levels many factors (geography, for example) diminish the ability of prisons and correctional facilities to obtain formally educated employees. This mixed-methods research aimed to first identify prison policies through random selection of state corrections agencies in the United States (n=20) that may allow certain years of service as a substitute for a bachelor’s degree in social sciences at hire. Secondly, there was a need to define how to calculate Pareto Distance (PD) as an indicator of incongruous education standards as to prison guards, and third, substantiate recommendations for benchmark employment to at least 1-in-5 guards with a baccalaureate. Unfortunately, the results were compelling. The majority of states permit teenagers to apply to work as prison guards. The incarceration rate is closely tied to the education level throughout the state. The Pareto Distance, however, represents a prospective benchmark for optimality where insufficient numbers of educated personnel are available to effectively operate a prison.
5
Gómez, Miguel-Ángel, Simcha Avugos, Miguel-Ángel Oñoro, Alberto Lorenzo, and Michael Bar-Eli. "Shaq is Not Alone: Free-Throws in the Final Moments of a Basketball Game." Journal of Human Kinetics 62, no. 1 (June 13, 2018): 135–44. http://dx.doi.org/10.1515/hukin-2017-0165.
Full textAbstract:
Abstract It has been previously observed that basketball free-throw (FT) shooting efficiency decreases towards the end of the game. The aim of the current study was to explore possible determinants for this distinctive pattern during close games (point differential of equal or under 2 points during the final minute of the game). A sample of shots attempted by 92 players in the Spanish professional basketball league (ACB) was collected. Several personal (age, experience, playing position and career FT percentage) and contextual (team ability, competition stage, game location, seconds remaining and score differential) variables were considered for the analysis of the data. The effects of the predictor variables on the players’ performance were analyzed according to two game contexts (FT attempted during the final minute or the last pair of FTs) using binomial logistic regression analysis. The results showed that during the final minute the only statistically significant variable was being in the center playing position (OR = 1.58), which decreased the FT shooting percentage compared to forwards and guards. In addition, the results during the last pair of FTs showed that the playing position of guards (OR = 1.70) and centers (OR = 2.22) was significant (a decrease in their FT percentage). Conversely, the score differential when tied (OR = -1.17) or losing (OR = -2.43) was significant, reflecting a lower probability of missing the shot. The results were interpreted and discussed from the viewpoints of crisis theory and the literature on choking in athletic performance.
6
Goman, Yu, and V. Liustei. "MILITARY AND POLITICAL CIRCUMSTANCES OF THE VICTORY OF THE MUSLIMS IN THE BATTLE OF AL-KAZIMA IN 633." Bulletin of Taras Shevchenko National University of Kyiv. History, no. 149 (2021): 11–17. http://dx.doi.org/10.17721/1728-2640.2021.149.2.
Full textAbstract:
The Battle of Kazima in 633 marked the beginning of a series of successful victories by General Khalid ibn al-Walid on the west bank of the Euphrates, which opened up opportunities for the Arab Caliphate to defeat the Iranian Sassanid Empire. The battle was a minor and secondary skirmish between Iranian border guards and nomadic robbers. The number of soldiers involved in the battle on both sides was not significant. In fact, the battle of Kazima was a clash between Arab Muslims and non-Muslim Arabs with the support of a small contingent of professional Iranian troops. The Iranian command followed passive and wait-and-see tactics, while the Arab military leader Khalid ibn al-Walid used mobile rapid maneuvering tactics to determine its course. The Iranian army and its allies were forced to fight after a long grueling march through the desert and weakened fighting spirit. At the beginning of the battle, the Arabs managed to trap and kill the Iranian commander Hormuzd, which further worsened the moral and psychological condition of the Arab Confederates allied with the Sassanids and led to their escape from the battlefield. The victory in the battle of Kazima had a largely moral and psychological significance for the Muslims, as it persuaded non-Muslim Arab tribes to join the Arab Caliphate. As a result of the victory at al-Kazimah, Muslims received significant material resources as military booty, which increased the influence of Muslims among the Arab leaders. It is not scientifically appropriate to call the battle of al-Kazimah a "battle of chained or tied" because of the absolute fiction of the plot about a load of iron chains in the convoy of the Iranian army. The fact that soldiers were tied up during combat formation was common in Iranian military practice, but its use was inappropriate in the Battle of Kazima.
7
Dionne, Danielle, and Elizabeth Coppock. "Tattoos as a window onto cross-linguistic differences in scalar implicature." Experiments in Linguistic Meaning 1 (July 30, 2021): 147. http://dx.doi.org/10.3765/elm.1.5013.
Full textAbstract:
This paper addresses the question of how to predict which alternatives are active in scalar implicature calculation, and the nature of this activation. It has been observed that finger implicates 'not thumb', and a Manner-based explanation for this has been proposed, predicting that if English had the simplex Latin word pollex meaning 'thumb or big toe', then finger would cease to have the implicature 'not thumb' that it has. It has also been suggested that this hypothetical pollex would have to be sufficiently colloquial in order to figure in scalar implicature calculation. This paper makes this thought experiment into a real one by using a language that behaves in exactly this way: Spanish has pulgar 'thumb' (< pollex), a non-colloquial form. We first use a fill-in-the-blank production task with both English and Spanish speakers to guage the likelihood with which a speaker will produce a given form as a way of describing a given digit. Production frequency does not perfectly track complexity, so we can then ask whether comprehension follows production frequency or complexity. We do so using a forced choice comprehension task, which reveals cross-linguistic differences in comprehension tracking production probabilities. A comparison between two RSA models -- one in which the speaker perfectly replicates our production data and a standard one in which the speaker chooses based on a standard cost/accuracy trade-off -- illustrates the fact that comprehension is much more closely tied to production probability than to the mere existence of sufficiently simple alternatives.
8
Heinsen, Johan. "Penal Slavery in Early Modern Scandinavia." Journal of Global Slavery 6, no. 3 (October 27, 2021): 343–68. http://dx.doi.org/10.1163/2405836x-00603005.
Full textAbstract:
Abstract In Scandinavia, a penal institution known as “slavery” existed from the sixteenth to the nineteenth centuries. Penal slaves laboured in the creation and maintenance of military infrastructure. They were chained and often stigmatized, sometimes by branding. Their punishment was likened and, on a few occasions, linked to Atlantic slavery. Still, in reality, it was a wholly distinct form of enslavement that produced different experiences of coercion than those of the Atlantic. Such forms of penal slavery sit uneasily in historiographies of punishment but also offers a challenge for the dominant models of global labour history and its attempts to create comparative frameworks for coerced labour. This article argues for the need for contextual approaches to what such coercion meant to both coercers and coerced. Therefore, it offers an analysis of the meaning of early modern penal slavery based on an exceptional set of sources from 1723. In these sources, the status of the punished was negotiated and practiced by guards and slaves themselves. Court appearances by slaves were usually brief—typically revolving around escapes as authorities attempted to identify security breaches. The documents explored in this article are different: They present multiple voices speaking at length, negotiating their very status as voices. From that negotiation and its failures emerge a set of practiced meanings of penal “slavery” in eighteenth-century Copenhagen tied to competing yet intertwined notions of dishonour.
9
Martin, Hannah Meszaros, and Oscar Pedraza. "Extinction in transition: coca, coal, and the production of enmity in Colombia's post-peace accords environment." Journal of Political Ecology 28, no. 1 (January 24, 2022). http://dx.doi.org/10.2458/jpe.4780.
Full textAbstract:
At the Paris Climate Summit in 2015, then Colombian president Juan Manuel Santos proposed constructing a multi-national biodiversity corridor that would extend from the Andes to the Brazilian Atlantic coast. Santos highlighted increased militarization of the territory as one advantage of the corridor. In this model, ecological conservation becomes a matter of national/natural security, in the form of counterinsurgency to counter illegal economies. Climate change and ecological disaster mean the forest needs the military power of the State to save it from destruction. We argue that such conservation entails a form of necropolitics lying in wait; because to conserve one part is to condemn the other – framed as the enemy – to certain destruction, as land is simultaneously designated for large-scale development projects. Conservation, in effect, becomes tied to a form of extinction. Our article examines two increasingly militarized frontiers that work through conservation in Colombia. The first is where the Andes meets the Amazon rainforest, an area that has seen an increase in deforestation following the 2016 Peace Agreement with the FARC. Deforestation is often attributed to the cultivation of coca (used to produce cocaine), and the solution posited by the government is to eradicate the plant. We argue that eradication of illicit crops is a form of enforced extinction that militarizes the forest, targeting both human and non-human inhabitants. The second frontier concerns coal mining on the Caribbean coast, where mass environmental devastation induced by the industry has led to a forced reorganization of life in the region. The military guards the sites of extraction and those who oppose coal mining become targets for elimination. We bring these two cases – coal and coca – into dialogue, to trace the extinction-driven expansion of extractive economies, a process intertwined with armed conflict, narcotrafficking, and now with transitional politics.
10
Cooke, Grayson. "A Spam Scam Slam." M/C Journal 6, no. 4 (August 1, 2003). http://dx.doi.org/10.5204/mcj.2238.
Full textAbstract:
The spam, the spam…like a meteor shower it comes, unceasing like the tides, unrelenting in its desire to save me, to lift me from my slumber, misfit that I am, sitting in the darkness waiting to be delivered from my faltering biology, my feeble credit rating, my meagre education. It comes every day, unbidden, from the Outside, from the Interior, from some networked techno-Badland where the righteous fear to tread. I don’t know who it comes from, they have never met me, they will never meet me. Their addresses are botched, their names are fake, Orientalized, Africanized, garbled beyond decryption. Their websites are down, their phones are off the hook, they route their missals through hapless foreign email servers whose gatekeepers have foolishly left their relays open. As soon as I set up filters to innoculate myself, their algorithms mutate and new strains develop, more wily and Protean than the last. And now, the hybrids are everywhere. Hungry free-ranging email-bots blithely pillaging the websites of the world for valuable identity-capital. Virtual Nigerian millionaires, who despite their legitimate business practices have become trapped in hostile economic ghettos. HGH addicts, greedily sucking back, mugwump-like, the life-juices of virtual human nervous-systems produced in suburban hormone-banks across the United States and Eastern Europe. A revitalized Third-Age, the golf courses of the world reeling under the onslaught of this new breed of energized, radiant octogenarians. A vast and growing horde of new entrants to the ranks of the stupendously well-endowed. How many others are there like me, out there, weltering under the unceasing weight of this crazed cyborgian storm, this cornucopia of inventiveness and perversion? We number in our millions, we unwitting receivers of the raw and bleeding edge of quackery; we are an Us, and they are a Them. We span the globe, worlds virtual and real, from the towering heights of corporate monoliths to the crumbling edges of the Hotmail slums. It doesn’t matter who we are! We are all equal here, we are all equal under Spam. Spam is the Great Leveller. Together, we are end-points, we are destinations, we are enormous potential-capital, we are a great numbers-game, we are fantastic odds. Here we all sit, crammed together in identical folders on $49 CD-ROMs. We toil together at the coal-face of the Trash bin, fingertips worn bare, Delete buttons sticky with the blood of the unwanted. And you know what? We outnumber them millions to one! These blond beasts of prey, these feeders on the bandwidth of the oppressed, these wanton exploiters of Microsoft’s Achilles heels, these teenage manipulators of the inviolable principles of global finance. Their margins so low, their reach so vast, their frequency irrelevant; they hardly even need to exist to do their job, their numbers are so small. They could so easily just be a glitch in the system, a forgotten semicolon here, a missing bracket there, and suddenly WHAM, zinging across the datasphere; Increase Your Bust Size! Prevent Employment Stagnation! All Natural Pheromones, Attract Sex! But isn’t it about time I gave in? Surely I could do with a larger penis. 23-67% larger in 6 months. An extra ¾” of girth in 10 months. Shoot 16 feet! Impress your friends! Surely now is a good time to start imbibing daily doses of Human Growth Hormone, in some weirdly cannibalistic ritual of geno-pharmacology. Surely now is the time to deal with my incipient baldness. Surely now is the time to develop a taste for teen barnyard frolics. I want to meet them, these machine-writers , these Home Based Workers. I want to meet a spammer, I want to check their palms. I want to look into their eyes and guage the soul of this particular brand of Internet Entrepreneur. I want to meet them for their blatant idiocy. I want to meet them because their business model is perfect. I want to meet them because they want to rip me off and they’ve never even seen my face. I want to meet them because they seem to know my name. I want to meet them to see if anything they say is true: “I was approached many times before but each time I passed on it. I am so glad I finally joined just to see what one could expect in return for the minimal effort and money required. To my astonishment, I received total $610,470.00 in 21 weeks, with money still coming in.” “We have been on the spray for just 3 weeks now, and besides the tremendous energy we both feel, my husband’s allergies and spells of depression have lifted. I am healing extremely fast after an accident and have lost 7 lbs. without trying!” “Got to tell ya I really was impressed with the results after a month - I didn’t have any problems to speak of but was interested in improving my control and size. I went from a 6.5/7.0” length to a full 8.0” - the big deal was not the size increase but the improved circulation I received - the head increased a full inch in diameter and along with this more enjoyment with every stroke as it is hyper sensitive when erect due to the increased surface area. The program was worth every penny - feel sorry for those that don’t know about this information.” But who are these people? It’s getting very personal. They call me by name, they tell me stories about their lives, inspiring stories of amazing success, of against-all-odds, of business miracles, of youth regained, balding abated, penises sprouting anew like fresh corn from good soil. What kind of subjectivity can we assign to these chimeras, these fictions of a hopeful science? They materialize only on-screen, they inhabit a realm yet-to-come. Their hawking cries hail me from beyond the abyss of faith; they have already leapt, already broken through. Doppelgängers of the net.art avant-garde, these over-people, these reachers-forth, their lives played out on a lightning stage between the soaring peaks and the Trash bin. Are they authors? Are they artists? Are they…real? Pah! What was I thinking?! Reality is a tool of the bureaucrats, of the biologically homeostatic, of the devious puppetmasters of offline media. No reality for them, these dare-devils of the multi-level marketing scheme, re-programmers of genetic destiny, they who write the future of the Human in bold red 18-point font. And no reality for us either, the potential consumers, demographically profound, fundamentally troubled; aging, lonely, single, furiously masturbating, high cholestorol, high blood pressure, overweight, in debt, badly mortgaged, un-insured, uneducated, exercise hating, impotent, suspicious, broke, balding, poorly endowed, small breasted and dog, dog tired. So perhaps we are all a little fictional, all a little speculative. But so what! A full inch in diameter! $620,000 in 6 months! Who would not sacrifice a little verifiability for such riches? This magnificent spray that decelerates Time and accelerates Body and Mind. This mystical information that increases Control and Size. How could my current state not be found wanting? How can I ignore the call? And with such a mainline into the future, what need have I of the machinations of the mainstream dot-economy? What difference does it make to me whether the nano-agents busily connecting synapses in the Amazon.com brain-in-a-tank can predict my favourite books and music? What difference do any of these massively-funded personalisation programs make, when daily I receive exhortations to feed fetishes I never even dreamed I had? I am interpellated anew, I have received messages from the Enlightened, the joyful consumers of the Word; once cynical, once suspicious, now laughing. Take me, I’m yours, de-subject me, re-subject me, I’m bubbling over, I’m full to the brim, I’m ready to suck the juice out of life and stay on to get the marrow. I’m right around the corner from just handing over my credit card details to the first one who asks nicely: “Fill out all requested information. You need to enter your credit card number for age verification - this protects under 18's from accessing explicit hardcore pornography. We have only listed the largest, most publicly operated porn sites that we KNOW can be trusted with this information. YOU WILL NOT BE CHARGED FOR THE FREE PASSWORD. If you don't believe me, just read their terms and conditions.” Citation reference for this article Substitute your date of access for Dn Month Year etc... MLA Style Cooke, Grayson. "A Spam Scam Slam" M/C: A Journal of Media and Culture< http://www.media-culture.org.au/0308/08-spamscam.php>. APA Style Cooke, G. (2003, Aug 26). A Spam Scam Slam. M/C: A Journal of Media and Culture, 6,< http://www.media-culture.org.au/0308/08-spamscam.php>
Dissertations / Theses on the topic "Tide guages"
1
Zigic, Sasha, and n/a. "A Methodology to Calculate the Time-Varying Flow Through a Hydraulic Structure Connecting Two Water Bodies." Griffith University. School of Engineering, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060111.145655.
Full textAbstract:
Hydraulic lock structures have been used for hundreds of years to control and maintain water levels in waterways. The most common are gated water regulation structures used to catch and divert water, and form an essential and critical part of many flood control and agricultural schemes. Although there are clear economic advantages to building the structures, they can contribute to major water quality problems for the waterways they influence (i.e. increased residence times and a change in mixing ability). Further, in most cases, the methods previously used to assess how the structures and their operations influence the flow regimes between the two connected systems were limited, thus hydraulic designers rely on simple formulations, existing literature and experience. Consequently, the objectives of this thesis were to undertake a detailed field study and develop a methodology and computer simulation tool to calculate the flow through a hydraulic structure connecting two water bodies so that future designs can be undertaken based upon sound knowledge. To demonstrate the outcomes of this thesis, the methodology and model were applied to an existing hydraulic structure (referred to as Structure C). Structure C is used to connect and exchange water between the tidally dominated section of the Nerang River estuary and an artificial lake system (Burleigh Lakes) on the Gold Coast, Australia. The gates of this structure open four times each day (once during each semi-diurnal tidal phase) and remain open for a period of 2 hours, allowing alternative and partial exchange between the two water bodies. To gain a better understanding of the dynamics of each waterbody under the influence of the structure, a series of detailed field experiments were initially undertaken to understand and quantify the exchange of water and its mixing ability. Tide gauges deployed within the lake indicated a water level change during each opening of up to 22 cm, equating to 413,600 m3 of water entering the lake over the 2 hour discharge period. Salinity profiles showed that the structure permitted the exchange of saline and freshwater between the two systems, during each tidal cycle, in turn maintaining the lake system as a saline (brackish environment). However, the field study also revealed that the controlled exchange of water between the systems perpetuated a permanently stratified environment on both sides of the structure. To simulate the flow dynamics influenced by Structure C, new routines were incorporated into an existing hydrodynamic model (BFHYDRO) within the model's grid and computational code, as part of this thesis. To achieve this, the flow in and out of the hydraulic structure cell (used to represent the hydraulic structure's location within the model grid) was calculated entirely from the local water level gradients on either side of the structure at each time-step, and not prescribed. This was found to be essential for complex tidally-dominated systems, such as the Nerang River. Routines were also developed to replicate the opening and closing times of the gates. Following the development of the methodology, the hydraulic structure cells were tested and applied to simulate the flow through Structure C and the complex exchange between the estuary and lake, in 2 and 3-dimensions. Tests indicated that the opening and closing times of the gates and the calibration of the discharge coefficient (which forms part of the broad-crested weir formula) were the most sensitive parameters to ensure the correct volume of water exchange between the two systems. Statistically, the model-predicted results compared very well with available surface elevation data within the estuary and lake, and thus, quantified the ability of the hydraulic structure cells to simulate the flux between the estuary and lake for each opening. Following the model validation process, results from the existing configuration were compared with hypothetical design alternatives and are documented herein. Further, part of the thesis also explored a practical and effective computer based learning strategy to introduce and teach hydrodynamic and water quality modelling, to the next generation of undergraduate engineering students. To enhance technology transfer a computer based instructional (CBI) aid was specifically developed to assist with the setup, execution and the analysis of models' output, in small easy steps. The CBI aid comprised of a HTML module with links to recorded Lotus Screen cam movie clips. The strategy proved to be a useful and effective approach in assisting the students to complete the project with minimum supervision, and acquire a basic understanding of water quality modelling. Finally, it is anticipated that this new modelling capability and the findings detailed herein will provide managers with a valuable tool to assess the influence of these structures on water circulation for present and future operations within the region. This model can also be set up at other sites to pre-assess various design configurations by predicting changes in current flows, mixing and flushing dynamics that a particular design might achieve, and assist with the selection process before the final selection and construction.
2
Zigic, Sasha. "A Methodology to Calculate the Time-Varying Flow Through a Hydraulic Structure Connecting Two Water Bodies." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/365304.
Full textAbstract:
Hydraulic lock structures have been used for hundreds of years to control and maintain water levels in waterways. The most common are gated water regulation structures used to catch and divert water, and form an essential and critical part of many flood control and agricultural schemes. Although there are clear economic advantages to building the structures, they can contribute to major water quality problems for the waterways they influence (i.e. increased residence times and a change in mixing ability). Further, in most cases, the methods previously used to assess how the structures and their operations influence the flow regimes between the two connected systems were limited, thus hydraulic designers rely on simple formulations, existing literature and experience. Consequently, the objectives of this thesis were to undertake a detailed field study and develop a methodology and computer simulation tool to calculate the flow through a hydraulic structure connecting two water bodies so that future designs can be undertaken based upon sound knowledge. To demonstrate the outcomes of this thesis, the methodology and model were applied to an existing hydraulic structure (referred to as Structure C). Structure C is used to connect and exchange water between the tidally dominated section of the Nerang River estuary and an artificial lake system (Burleigh Lakes) on the Gold Coast, Australia. The gates of this structure open four times each day (once during each semi-diurnal tidal phase) and remain open for a period of 2 hours, allowing alternative and partial exchange between the two water bodies. To gain a better understanding of the dynamics of each waterbody under the influence of the structure, a series of detailed field experiments were initially undertaken to understand and quantify the exchange of water and its mixing ability. Tide gauges deployed within the lake indicated a water level change during each opening of up to 22 cm, equating to 413,600 m3 of water entering the lake over the 2 hour discharge period. Salinity profiles showed that the structure permitted the exchange of saline and freshwater between the two systems, during each tidal cycle, in turn maintaining the lake system as a saline (brackish environment). However, the field study also revealed that the controlled exchange of water between the systems perpetuated a permanently stratified environment on both sides of the structure. To simulate the flow dynamics influenced by Structure C, new routines were incorporated into an existing hydrodynamic model (BFHYDRO) within the model's grid and computational code, as part of this thesis. To achieve this, the flow in and out of the hydraulic structure cell (used to represent the hydraulic structure's location within the model grid) was calculated entirely from the local water level gradients on either side of the structure at each time-step, and not prescribed. This was found to be essential for complex tidally-dominated systems, such as the Nerang River. Routines were also developed to replicate the opening and closing times of the gates. Following the development of the methodology, the hydraulic structure cells were tested and applied to simulate the flow through Structure C and the complex exchange between the estuary and lake, in 2 and 3-dimensions. Tests indicated that the opening and closing times of the gates and the calibration of the discharge coefficient (which forms part of the broad-crested weir formula) were the most sensitive parameters to ensure the correct volume of water exchange between the two systems. Statistically, the model-predicted results compared very well with available surface elevation data within the estuary and lake, and thus, quantified the ability of the hydraulic structure cells to simulate the flux between the estuary and lake for each opening. Following the model validation process, results from the existing configuration were compared with hypothetical design alternatives and are documented herein. Further, part of the thesis also explored a practical and effective computer based learning strategy to introduce and teach hydrodynamic and water quality modelling, to the next generation of undergraduate engineering students. To enhance technology transfer a computer based instructional (CBI) aid was specifically developed to assist with the setup, execution and the analysis of models' output, in small easy steps. The CBI aid comprised of a HTML module with links to recorded Lotus Screen cam movie clips. The strategy proved to be a useful and effective approach in assisting the students to complete the project with minimum supervision, and acquire a basic understanding of water quality modelling. Finally, it is anticipated that this new modelling capability and the findings detailed herein will provide managers with a valuable tool to assess the influence of these structures on water circulation for present and future operations within the region. This model can also be set up at other sites to pre-assess various design configurations by predicting changes in current flows, mixing and flushing dynamics that a particular design might achieve, and assist with the selection process before the final selection and construction.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Engineering
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Mathers, Eunice Lucy. "Sea level response to atmospheric pressure and wind forcing in the global deep ocean." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367977.
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Tsang, Fan Cheong. "Advances in flood forecasting using radar rainfalls and time-series analysis." Thesis, Lancaster University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.481184.
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This thesis reports the use of a time-series analysis approach to study the catchment hydrological system of the River Ribble. Rain gauge records, radar rainfall estimates and flow data are used in the analysis. The preliminary study consists of the flow forecasting at Reedyford, Pendle Water (82 km2). Flow forecasts generated from the rain gauge records are better than the radar rainfall estimates over this small catchment. However, the catchment response to rainfall is quick and no clear advantages in extending the lead-time of the forecast can be introduced by using an artificial time delayed rainfall input. A non-linear rainfall-flow relationship has been studied using the rain gauge rainfall and flow records at the River Hodder catchment (261 km2). A calibration scheme is used to identify the non-linear function of the catchment as well as the rainfall-flow system model. Although a better time-invariant system model can be identified, the non-linear rainfall-flow process cannot be fully explained by a power law function of effective rainfall. Assuming the dynamic, nonlinear system characteristics of the catchment can be reflected by a time-varying model gain parameter, relationships between the parameter and the flow, and between the parameter and the rainfall can be evaluated. These relationships have been used to improve the flow forecast during storm events. The results indicate, however, that the approach failed to improve the flow forecast near the peak flow condition. Radar data have been incorporated to forecast the flow at Jumbles Rock (1053 km2) and Samlesbury (1140 km2), River Ribble. The radar data calibrated by the Lancaster University Adaptive Radar Calibration System appears to produce better flow forecasts than the standard radar data product calibrated by the Meteorological Office. The proposed flow forecasting scheme generates better forecasts than the current system operated by the National Rivers Authority, North West Region.
Books on the topic "Tide guages"
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Law, Felicia. The Emperor's guards: Concepts of time. New York: Alphabet Soup, 2010.
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ill, Spoor Mike, ed. The emperor's guards: Concepts of time. New York: Alphabet Soup, 2010.
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Baker, Maurice. A time of fireflies and wild guavas. Singapore: Federal Publications, 1995.
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Thomas, David Hurst. St. Catherines: An island in time. Atlanta, Ga: Georgia Endowment for the Humanities, 1988.
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Reilly, Robert. Life in prison: Eight hours at a time. Thomaton, Maine: Tilbury House, Publishers, 2014.
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St. Catherines: An island in time. 2nd ed. Athens: University of Georgia Press, 2010.
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ill, Staub Christine, ed. Guale. Savannah, Ga: American Efficiency Publications, 1993.
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Hennessey, Patrick. The Junior Officers' Reading Club: Killing time and fighting wars. New York: Riverhead Books, 2010.
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Hennessey, Patrick. The junior officers' reading club: Killing time and fighting wars. Rearsby: Clipper Large Print, 2010.
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Hennessey, Patrick. The Junior Officers' Reading Club: Killing time and fighting wars. London: Allen Lane, 2009.
Find full textBook chapters on the topic "Tide guages"
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Howie, Luke. "Guarding the Contact Zones: Security Guards in a Time of Terror." In Witnesses to Terror, 133–54. London: Palgrave Macmillan UK, 2012. http://dx.doi.org/10.1057/9781137271761_7.
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Bak, Stanley, Sergiy Bogomolov, and Matthias Althoff. "Time-Triggered Conversion of Guards for Reachability Analysis of Hybrid Automata." In Lecture Notes in Computer Science, 133–50. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-65765-3_8.
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Jian, Gong. "Evolution of the “Crescent Guard” in Chinese Swords." In Martial Culture and Historical Martial Arts in Europe and Asia, 151–82. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2037-0_5.
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AbstractIron and steel arms appeared in China during the late Warring States while guards on Han dynasty jian (double-edged sword) mainly continued Warring States designs. Single-edged ring-pommel sword (huanshoudao) which appeared during the same period did not have a guard. During the Jin dynasty, a type of V-shape sword guard appeared, which continued into the Southern and Northern dynasties. In the Tang dynasty, on the one hand, arms design continued Northern Zhou and Sui trends; at the same time, it absorbed Turkic and Sassanid influences from the west, which gave rise to a unique Tang sword aesthetic. From then on, V-shape guards started to gain popularity in China. Developments of this style were to have a major influence on sword guard designs during the Song, as well as among the Mongols and Tibetans until it finally attained the familiar form of zoomorphic guard during the Ming and Qing dynasties.
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Alshmrany, Kaled M., Mohannad Aldughaim, Ahmed Bhayat, and Lucas C. Cordeiro. "FuSeBMC v4: Smart Seed Generation for Hybrid Fuzzing." In Fundamental Approaches to Software Engineering, 336–40. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99429-7_19.
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AbstractFuSeBMC is a test generator for finding security vulnerabilities in C programs. In Test-Comp 2021, we described a previous version that incrementally injected labels to guide Bounded Model Checking (BMC) and Evolutionary Fuzzing engines to produce test cases for code coverage and bug finding. This paper introduces an improved version of FuSeBMC that utilizes both engines to produce smart seeds. First, the engines run with a short time limit on a lightly instrumented version of the program to produce the seeds. The BMC engine is particularly useful in producing seeds that can pass through complex mathematical guards. Then, FuSeBMC runs its engines with extended time limits using the smart seeds created in the previous round. FuSeBMC manages this process in two main ways. Firstly, it uses shared memory to record the labels covered by each test case. Secondly, it evaluates test cases, and those of high impact are turned into seeds for subsequent test fuzzing. In this year’s competition, we participate in the Cover-Error, Cover-Branches, and Overall categories. The Test-Comp 2022 results show that we significantly increased our code coverage score from last year, outperforming all tools in all categories.
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Felli, Paolo, Marco Montali, and Sarah Winkler. "CTL$$^*$$ Model Checking for Data-Aware Dynamic Systems with Arithmetic." In Automated Reasoning, 36–56. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-10769-6_4.
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AbstractThe analysis of complex dynamic systems is a core research topic in formal methods and AI, and combined modelling of systems with data has gained increasing importance in applications such as business process management. In addition, process mining techniques are nowadays used to automatically mine process models from event data, often without correctness guarantees. Thus verification techniques for linear and branching time properties are needed to ensure desired behavior.Here we consider data-aware dynamic systems with arithmetic (DDSAs), which constitute a concise but expressive formalism of transition systems with linear arithmetic guards. We present a CTL$$^*$$ ∗ model checking procedure for DDSAs that addresses a generalization of the classical verification problem, namely to compute conditions on the initial state, called witness maps, under which the desired property holds. Linear-time verification was shown to be decidable for specific classes of DDSAs where the constraint language or the control flow are suitably confined. We investigate several of these restrictions for the case of CTL$$^*$$ ∗ , with both positive and negative results: witness maps can always be found for monotonicity and integer periodicity constraint systems, but verification of bounded lookback systems is undecidable. To demonstrate the feasibility of our approach, we implemented it in an SMT-based prototype, showing that many practical business process models can be effectively analyzed.
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Blanchette, Jude. "Prologue—The Death of Mao Zedong." In China's New Red Guards, C02—C02.P88. Oxford University PressNew York, 2022. http://dx.doi.org/10.1093/oso/9780197577554.003.0002.
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Abstract This chapter discusses how Deng Xiaoping balanced two (often competing) goals since the beginning of the reforms in the late 1970s: modernizing China’s economy on the one hand and maintaining the unchallenged supremacy of the Communist Party on the other. When torn between the two, Deng always sided with Party supremacy. Yet when Party conservatives pushed too hard against the reforms, Deng would use his considerable authority and prestige to re-right the reform agenda. This story had played out again and again throughout the 1980s. To simplify what was a remarkable complex political time, two groups vied for control of economic policymaking: reformists, led by State Council premier Zhao Ziyang and CCP general secretary Hu Yaobang, and conservatives, a loose coalition of powerful senior-level officials, entrenched bureaucrats, aging revolutionaries, and die-hard Marxists. Pushback from conservatives began almost immediately after China began to move away from the planned economy. The People’s Liberation Army (PLA) was also unenthusiastic about the side effects of these reforms.
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Blanchette, Jude. "Bombard the Headquarters." In China's New Red Guards, 104—C4.P95. Oxford University PressNew York, 2022. http://dx.doi.org/10.1093/oso/9780197577554.003.0006.
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Abstract This chapter assesses how neo-Maoists viewed research on China’s contemporary history as a proxy battle for the country’s political future. There is no such thing as neutral history, they argued, and every utterance about Mao Zedong or the Communist Party’s historical legacy had the effect, intentional or not, of either supporting or attacking the regime. Xi Jinping brooks no tolerance for historical pluralism, and in his fight for conformity, he has presented a new mission for China’s neo-Maoists. Once in power, Xi revived Maoist tools of governance, including a one-year “mass line” campaign to rectify cadre work styles and bring the Party “closer to the people.” To combat historical nihilism, the Party under Xi set out to both crush deviationist historical interpretations and historians and, at the same time, rehabilitate historical figures who had been maligned and marginalized through outright neglect by the Party or worse, by their intentional dethroning for political purposes. While the campaign would penetrate into the deepest and most obscure reaches of Party historiography, it would begin with the PRC’s founding father, Mao Zedong.
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Blanchette, Jude. "Storm." In China's New Red Guards, 62—C2.P75. Oxford University PressNew York, 2022. http://dx.doi.org/10.1093/oso/9780197577554.003.0004.
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Abstract This chapter investigates how the March 4 conference of reform-minded officials and academics was a turning point for Utopia and the broadening coalition of leftist voices in China. For years, they had spoken of shadowy forces working on behalf of the capitalist class to influence, and eventually overthrow, the Communist Party. From this point on, Utopia, and an increasing cohort of competitors and copycats, would embrace a paranoid worldview that saw global conspiracies of Western domination, the infiltration of China and the Party by traitors and “hostile forces,” and a belief in an inevitable and unavoidable conflict with the United States. As they prepared for this coming struggle, they saw Mao Zedong as their secret weapon. The chapter then looks at the publication of Unhappy China: The Great Time, Grand Vision and Our Challenges in 2009, the success of which unnerved the Chinese government, which had long seen grassroots nationalism as a “double-edged sword.” One can imagine that the Party’s larger concern about Unhappy China was less the book itself than the part it played in an expanding populist nationalist and neo-Maoist movement.
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Dzenovska, Dace. "Repression and Redemption." In School of Europeanness. Cornell University Press, 2018. http://dx.doi.org/10.7591/cornell/9781501716836.003.0007.
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Chapter 6 shows how, in the process of becoming European, Latvian border guards struggled with the demand to both strengthen the border and to civilize it. Latvian migration officials and border guards were generally better at learning the repressive elements of Europe’s migration regime (that is, securing the border) than embracing the redemptive ones (that is, tolerance and compassion). Or, rather, their compassion was differently directed—just like former European colonial empires police their boundaries to keep out former colonial subjects while at the same time fighting racism and cultivating tolerance towards them, Latvian border guards policed Latvia’s boundaries to keep out former rulers (who are on occasion perceived as barbarians), while also exhibiting feelings of compassion and solidarity towards them. However, becoming European required that they turn their attention to Europe’s former colonial subjects as well—both in terms of keeping barbarians at the gate and treating them right.
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Gaznyuk, Lidiya, and Iryna Soina. "TEMPORALITY OF SOCIAL REALITY AND STRUCTURE OF LAN-GUAGE." In Integration of traditional and innovation processes of development of modern science. Publishing House “Baltija Publishing”, 2020. http://dx.doi.org/10.30525/978-9934-26-021-6-27.
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All human activity is associated with the need for interpersonal communication. The need and concern for other people, as for oneself, is a specific feature of the human race, in which biological necessity acts simultaneously, that is, a person's speech and the individuals themselves are necessarily included in the social and humanitarian context. Considering the linguistic reality of social life in the form of a text, we leave the person as the main object of research. Thus, the original text of modern society is formed, which includes the worldview of people and the features of the mental system of their interaction, the way and nature of existence, a kind of sign system in the form of fixed information. The understanding is presented that speech does not reflect the meaning of things and processes of a certain field of activity, but reveals their content and gives meaning within the framework of practical activity. The mechanism of the genetic application of concepts in a certain historical territory and the process of the formation of the semiotic space of social knowledge and the procedure for recognizing its words-signs are substantiated, thanks to which the sys-tem of understanding the mentality in intellectual discourse is built. The fundamental problem of the relationship between real time and language is analyzed, the fundamental foundations of the formation of the complete semantic structure of language: an immediate feature – an object – a mediating feature – an indirect feature, taking into account the specifics of human social activity. The existential relations of symbolic-semiotic structures in the plane of interaction of the subject field of signs and the place of the subject with the help of semantics are determined, which provides a differentiated modality of the specified relationship, the structure and levels of meanings, the moments of actualization of the designated and places the terms of the specified relationship in a specific social field of their existence; it is proved that a person acts as a signified and is partially included in the models that form his attitude to the surrounding social being, but at the same time he remains signified, that is, those on whom the formation of these models indirectly depends. The study allows us to comprehend the holistic representation of the linguistic reality of the modern architectonics of social and humanitarian knowledge in the process of globalization transformations of the world in its main dimensions and forms.
Conference papers on the topic "Tide guages"
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Knoke, M., and G. Hommel. "Dealing with global guards in a distributed simulation of colored Petri nets." In DS-RT 2005 Proceedings. Ninth IEEE International Symposium on Distributed Simulation and Real-Time Applications. IEEE, 2005. http://dx.doi.org/10.1109/distra.2005.15.
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Li, Chaolin, Xiongjun Wu, Songhua Shi, and Jialing Zhou. "A predictor feedback control method for time-delay systems using Guass-Legendre integration." In 2017 11th Asian Control Conference (ASCC). IEEE, 2017. http://dx.doi.org/10.1109/ascc.2017.8287434.
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Moreira, Daniel, José Macías, Ruben Hidalgo-León, and Guillermo Soriano. "Thermal Behavior of Soils Under Tidal Effect: A Case Study in Guayaquil, Ecuador." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87738.
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This research analyzes the tidal effect in the thermal properties of the ground for a case study in Guayaquil, Ecuador. A thermal response test (TRT) performed near the shore of the Guayas river presented periodic fluctuations in the thermal behavior concurrent with the tide cycle. First, an analytical solution for tide-induced water table fluctuations was used for the determination of the phreatic level for the days of the test. The analytical model accounted for the horizontal distance from the shore, the ground porosity, and permeability. Afterward, a geometric mean model was used to predict the thermal conductivity of soil considering the groundwater level fluctuations. Finally, a correlation between the effective thermal capacity of the ground and the phreatic level in the soil was found.
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Samale, Anil P., and El Mostafa El Ghazzani. "Investigation of Coupling Guard Temperature Rise Using Advanced CFD Analysis." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14110.
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Abstract Increasingly, the turbomachinery industry is facing issues related to high temperatures and oil misting inside coupling guards. This leads to machinery downtimes and loss of revenue. Many in the turbomachinery industry are investing significant time and effort to reduce heat generation inside coupling guards. The present computational fluid dynamics (CFD) investigation of Air+Oil flow and heat transfer in the coupling guard was conducted to investigate these issues. In prior investigations, the emphasis has been mostly placed on predicting temperature by modeling pure airflow in the coupling guard. This paper presents CFD simulations completed under two conditions: 1) with pure AIR -in a Single phase and 2) a multi-phase fluid combining Air+Oil. The coupling guard geometry is cylindrical in nature. Given the symmetry in the geometry, a 90-degree sector was modeled, allowing significantly smaller meshes and lower run times without compromising quality. In this paper, the modeled geometry includes both Fluid + Solid domains that do not contain an inlet or outlet. This work explains the CFD methodology for multiphase and conjugate heat transfer analysis. The objective of this paper is to predict the temperature on the coupling guard considering Air + Oil flow and heat transfer. The domain evaluated consists of several stationary and rotating components. The CFD domain used for the conjugate heat transfer analysis consists of fluid between the rotating shaft and the stationary cover. The solid domain includes the coupling guard cover. The commercially available software ANSYS CFX 18.1 was used. The mesh was created using Tetrahedral/Prism elements. Both steady-state and unsteady CFD analyses were completed. As noted, multiphase CFD analyses were carried out using Air and Oil VG68 as a homogenous type of mixture. Detailed flow field characteristics (total and static temperature, pressure, streamlines colored by Mach number, etc.) and CFD-predicted temperatures are compared between the Pure Air and Air+Oil simulations. Also, available measurements were used to validate the CFD results. Temperature results obtained from the CFD simulations were found to be in good agreement with the experimental data. The CFD modeling approach developed can be used to design coupling guards with lower surface temperatures.
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Barnett, Ralph L., and Theodore Liber. "A New Interlock System: Movable Interlocked Barrier Guards With Motorized Openers for Testing." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-1157.
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Abstract A unique system is introduced for monitoring the viability of conventional position switch interlocks on movable barrier guards. At closely spaced intervals a test device motor causes the guard to open slightly to check if the interlock will change state in an attempt to interrupt control power to the protected machine. The machine will not in fact shut down during the testing phase because the interlock system will be isolated from the machine operating motor contactors during the test duration. Testing of a guard is annunciated just before and during the automatic testing phase. Any failures of an interlock or its testing system will also be annunciated until their causes are corrected. When a latching system is used in conjunction with the guard, a faulty interlock will cause the guard to be locked closed until it is convenient to effect a repair. Production is not interrupted because the interlock remains bypassed during this period. If an interlock is temporarily circumvented or if the interlock guard is sabotaged, the test device motor will not cause a change in state of the interlock during the test phase; again, system malfunction will be annunciated and/or the guard will remain latched and/or the machine will be shut down. The proposed process provides the following advantages: • A quantum leap in system reliability and safety is obtained using even the most ordinary “limit switch” type interlocks. • The tamper-resistance of all known interlocks will be greatly enhanced; all popular forms of temporary interlock circumvention are eliminated. • Long term sabotage which involves simultaneous guard removal and interlock bypassing is addressed for the first time; to defeat the proposed process involves the most outrageous restructuring of the control system. • The system will safely endure adhesive environments that may cause interlock activators to stick in their “fail to danger” states. • The monitored machine is almost never shut down nor production interrupted during or after the testing phase even if mischief is uncovered. • The testing of large numbers of interlocks will not expose the machines’ electric power motors to the frequent restart demand associated with some conventional manual testing procedures. • Without compromising safety, maintenance of even multiple interlock failures may be deferred until their repair is convenient. • The assurance of working interlocks may enable OSHA to expand applications where maintenance is performed under “control stop” as opposed to the more elaborate “lock out.” • The design of the new test and monitoring system may be executed and implemented using straightforward hardware and software that are firmly entrenched technology.
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Liu, De-Shin, Nan-Chun Lin, Chao-Chin Huang, and Yin-Lee Meng. "Structural Design Optimization of Side/Rear Impact Guards Using a Coupled Genetic Algorithm Finite Element Method." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62270.
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Underride protective structure can reduce serious injures when passenger cars collide with the rear end or side of the heavy vehicle. This paper describes the use of Genetic Algorithm (GA) coupled with a dynamic, inelastic and large deformation finite element (FE) code LS-DYNA to search optimal design of the Side/Rear impact guards. In order to verify the accuracy of the FE model, the simulation results were compared with real experiments follow with the regulation ECE R73. The validated FE model then used to study the optimal design base on under running distance and total amount of energy absorbing capacity. The results from this study shown that this newly developed method not only can found multi-objective design parameters but also can reduce computational time significantly.
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Flander, Benjamin. "Varde: geneza in pregled novel Zakona o varstvu javnega reda in miru in Zakona o nadzoru državne meje." In Varnost v ruralnih in urbanih okoljih: konferenčni zbornik. Univerzitetna založba Univerze v Mariboru, 2020. http://dx.doi.org/10.18690/978-961-286-404-0.8.
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The article presents the genesis and content of the amendments to the Protection of Public Order Act and the State Border Control Act, which were proposed by the opposition and adopted by the National Assembly at the end of September 2020 to limit the operation of the vigilant guards. The amendments prohibited and sanctioned the carrying or display of imitations of weapons and weapons-like objects to create the appearance that a person is performing the duties of officials or military personnel. They also prohibited and sanctioned the wearing of uniforms or clothing similar to the uniforms of officials or military personnel if a person, by his or her conduct or presence in a particular public or private place, creates the appearance of performing the duties of officials or military personnel. Time will tell how the police will implement the amendment and what the adopted amendments mean in practice.
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Railsback, Ben T., Richard M. Ziernicki, Ricky L. Nguyen, Steve D. Knapp, and William H. Pierce. "Stand-Up Forklift Egress Times as a Function of Operator Compartment Guarding." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38847.
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A significant hazard related to the use of stand-up lift trucks, or stand-up forklifts, is the hazard of a lower limb crush injury or foot crush due to the opening across the rear of the operator compartment. According to one lift truck manufacturer’s statistics, there have been over 500 accidents that resulted in an injury to the lower limb of the operator in the last 30 years that involved their stand-up lift trucks. [1] Other manufacturers have had similar accidents. The injuries have occurred to the lower limb of the operator due to the close proximity of the operator’s lower limbs to the exterior of the lift truck, and the confined areas that stand-up lift trucks operate in. The operator’s lower limb can become pinned and crushed between the moving lift and another fixed object such as a rack system, a column or another lift truck. Objects, such as a fork tine, can also intrude into the operator compartment, injuring the operator’s lower extremities. The ANSI/ITSDF B56.1, Safety Standard for Low Lift and High Lift Trucks, encourages stand-up lift trucks to be designed with an open compartment to permit easy ingress and egress. [2] According to the standard, the open design allows an operator a free and easy egress from the truck in the event of a tip-over or off-the-dock accident. However, the standard permits the use of additional guarding and enclosure of the operator compartment. Spring loaded doors (or spring assisted closing guards) have been designed, implemented and are available from many manufacturers, but no data has been published regarding the time to open and egress from the operator compartment. Latching doors have also been designed and manufactured, but are not currently available on the market except in the case of trucks equipped with freezer cabs, for operation in refrigerated environments. However, latched doors have been criticized for extending the egress time duration by approximately 1/2 second. This study shows that a spring loaded door can be implemented on a stand-up forklift while only increasing egress time by a negligible amount, 0.05 seconds over an open compartment configuration. Furthermore, this study shows that an optimized latching door, designed by Knott Laboratory engineers, can also be implemented for a stand-up forklift while only increasing egress time by 0.09 seconds. The latching door designed by Knott Laboratory decreases the change in egress time associated with a latched door by a factor of 5. Therefore, the addition of a spring loaded door, or a latching door will not significantly increase operator egress time and provide additional protection to the operator in the event of a collision while still maintaining quick egress.
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Keuning, J. A., P. F. van Terwisga, and B. Nienhuis. "The Possible Application of an AXE Bow on a 5000 Ton Frigate." In SNAME 13th International Conference on Fast Sea Transportation. SNAME, 2015. http://dx.doi.org/10.5957/fast-2015-021.
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During some time now the application of the so called AXE Bow has proven very successful. Typical applications so far have been as Fast Crew Suppliers in the Offshore industry, as Patrol Boats with Coast Guards and SAR boats all in the range of 50 till 20 meter length overall and speeds ranging from 25 to 35 knots. Applying the AXE Bow Concept on smaller boats than 15 meter length overall is a challenge, because minimal stability requirements generally ask for a smaller L/B ratio and so beamier ships. On the other end application on frigate type hulls, which have generally a rather high L/B ratio and already fine bow could be considered less advantageous because high vertical accelerations, bow slamming and added resistance in head waves are already relatively small. In an earlier study commissioned by the Netherlands, Italian and Danish navies some 10 years ago (the THALES Project reported in Ref [1]) the application of the Enlarged Ship Concept and the AXE Bow Concept on a frigate type hull were already considered but only on a limited scale. Over the last decade a large amount of design information has been gathered from the experience gained from full scale measurements on board of real AXE Bow ships. This refers amongst others to increased directional stability particular in following waves by applying fixed skegs and so reduced rudder motions to be applied, the possibility to vary and increase the maneuverability at wish by making these skegs retractable (Ref [2]), a reduced added resistance in waves and considerably less shipping of green water when sailing in head waves. All these aspects led to the question raised when the replacement of the presently employed “M Frigate” of the Royal Netherlands Navy came in sight whether the application of the AXE Bow Concept on the new frigate would be a desirable and feasible option. The main question to be addressed by the present research was How does the Conventional Frigate hull type compare to the AXE Bow hull with respect to: the calm water resistance, taking on green water, the behavior in stern quartering waves, and the maneuverability. These research questions were formulated and the project commissioned by the DAMEN Shipyard at Gorinchem, Damen Schelde Naval Shipbuilding and the Defense Material Organization from the Ministry of Defense of the Netherlands to the Ship Hydromechanics Department of the Delft University of Technology. An extensive research plan including a large test program has been set up to investigate the behavior of both designs, both in the towing tank of the Delft University and from MARIN at Wageningen and also on open water on an estuary in the south with radio controlled models. Part of the measurements were conducted on open water to be able to carry out turning circles at various forward speeds and rudder angles. Also for the tests in following and stern quartering waves the addition of open water tests seemed essential to gather sufficient statistically reliable results on rarely occurring events such as broaching. The main results of this research project will be reported in this paper.