scholarly journals The Effect of Subgrade Coefficient on Static Work of a Pontoon Made as a Monolithic Closed Tank

2021 ◽  
Vol 11 (9) ◽  
pp. 4259
Author(s):  
Anna Szymczak-Graczyk
Keyword(s):  
Minimum Energy ◽  
Floating Platform ◽  
Static Work ◽  
One Stage ◽  
Single Piece ◽  
Characteristic Points ◽  
Internal Partition ◽  
Conducting Research ◽  
Metacentric Height ◽  
Made In

This article presents the effect of taking into account the subgrade coefficient on static work of a pontoon with an internal partition, made in one stage and treated computationally as a monolithic closed rectangular tank. An exemplary pontoon is a single, ready-made shipping element that can be used as a float for a building. By assembling several floats together, the structure can form a floating platform. Due to the increasingly violent weather phenomena and the necessity to ensure safe habitation for people in countries at risk of inundation or flooding, amphibious construction could provide new solutions. This article presents calculations for a real pontoon made in one stage for the purpose of conducting research. Since it is a closed structure without any joint or contact, it can be concluded that it is impossible for water to get inside. However, in order to exclude the possibility of the pontoon filling with water, its interior was filled with Styrofoam. For static calculations, the variational approach to the finite difference method was used, assuming the condition for the minimum energy of elastic deflection during bending, taking into account the cooperation of the tank walls with the Styrofoam filling treated as a Winkler elastic substrate and assuming that Poisson’s ratio ν = 0. Based on the results, charts were made illustrating the change in bending moments at the characteristic points of the analysed tank depending on acting loads. The calculations included hydrostatic loads on the upper plate and ice floe pressure as well as buoyancy, stability and metacentric height of the pontoon. The aim of the study is to show a finished product—a single-piece pontoon that can be a prefabricated element designed for use as a float for “houses on water”.

scholarly journals Numerical Analysis of the Bottom Thickness of Closed Rectangular Tanks Used as Pontoons

2020 ◽  
Vol 10 (22) ◽  
pp. 8082
Author(s):  
Anna Szymczak-Graczyk
Keyword(s):  
Numerical Analysis ◽  
Residential Buildings ◽  
Bottom Plate ◽  
Bending Moments ◽  
Static Work ◽  
Hydrostatic Load ◽  
Characteristic Points ◽  
Floating Platforms ◽  
Metacentric Height ◽  
Made In

This paper concerns the numerical analysis of closed rectangular tanks made in one stage, used as pontoons. Such structures can be successfully used as floating platforms, although they primarily serve as floats for ‘houses on water’. Amphibious construction has fascinated designers for many years and is becoming, in addition to a great and prestigious location for many purposes, a practical global necessity. Severe weather phenomena that no country is safe from, i.e., heavy rains or floods, combined with the scarcity of space intended for the construction of residential buildings, encourage development at the contact of water and land or on water only. This paper contains an analysis of the static work of tanks with different bottom thickness subjected to hydrostatic load acting on tank walls and the bottom plate and evenly distributed load acting on the upper plate, i.e., major impacts that occur when tanks are used as pontoons. Calculations were made using the finite difference method in terms of energy, assuming the Poisson’s ratio ν = 0. Based on the solutions obtained, charts were made that illustrated the change in bending moments at the characteristic points of the analysed tanks depending on acting loads. The article also includes calculations of buoyancy, stability and the metacentric height for tanks with different bottom thicknesses, with the main purpose being to improve and share knowledge on their safe use as pontoons.

A study on a new criterion for minimum-energy perfect control in the state-space framework

2019 ◽  
Vol 233 (7) ◽  
pp. 779-787 ◽  
Author(s):  
Wojciech P Hunek ◽  
Marek Krok
Keyword(s):  
Energy Cost ◽  
Control Algorithm ◽  
Minimum Energy ◽  
Energy Performance ◽  
Control Law ◽  
Performance Simulation ◽  
New Approach ◽  
Energy Behavior ◽  
New Criterion ◽  
Made In

In this article, an advanced study concerning the energy cost of the perfect control algorithm is provided. An application of different nonunique matrix inverses into perfect control law has resulted in remarkable influence on both control and state signals. Following the newly obtained issues, covering the minimum-energy behavior, a new related criterion is proposed here. Based on deterministic norm we can, in a simple way, estimate the crucial energy performance. Simulation examples made in MATLAB/Simulink environment show the high potential of a new approach considered in the article.

scholarly journals Kewenangan Notaris dalam Pembuatan Akta Pernyataan Keputusan Rapat Umum Pemegang Saham Perseroan Terbatas di Kabupaten Badung

Acta Comitas ◽  
2019 ◽  
Vol 3 (3) ◽  
pp. 478
Author(s):  
Ida Ayu Karina Diantari
Keyword(s):  
Research Methods ◽  
Empirical Research ◽  
General Meeting ◽  
Empirical Research Methods ◽  
Notary Public ◽  
Conducting Research ◽  
Made In

General Meeting of Shareholders (GMS), in principle, is made in the form of an original deed carried out in front of a notary or included in the meeting minutes in the form of a deed under the hand wherein the deed is converted into an authentic deed. This study uses empirical research methods by conducting interviews with Notaries based on their experience in making the statement deed, so the formulation of the problem made to limit and make more focus in conducting research is about the notary's responsibility in making deeds related to the general meeting of shareholders, as well as reviewing aspects of protection obtained by a notary public regarding the deed. The conclusion obtained from the research is that according to Article 15 of Act Number 2 of 2014 concerning Notary Position, a Notary has the authority to make Deed of Decision of Limited General Meeting of Shareholders and will be an authentic deed if made in the form of a notarial deed called Decree of Decision General Meeting of Shareholders. Rapat Umum Pemegang Saham (RUPS), pada pokoknua dibuat dalam bentuk akta asli yang dibuat didepan seorang notaris atau disertakan pada notulensi rapat berupa akta dibawah tangan dimana selanjutnya akta tersebut diubah menjadi akta otentik. Penelitian ini menggunakan metode penelitian empiris dengan cara melakukan wawancara kepada Notaris berdasarkan pengalamannya dalam membuat akta pernyataan tersebut dengan demikian rumusan masalah yang dibuat untuk membatasi dan membuat lebih fokus dalam pelaksanaan penelitian adalah mengenai tanggung jawab notaris dalam hal pembuatan akta terkait dengan rapat umum pemegang saham, serta mengkaji aspek perlindungan yang diperoleh seorang notaris terkait pembuatan akta tersebut. Kesimpulan yang diperoleh dari penelitian adalah bahwa menurut Pasal 15 Undang-Undang Nomor 2 Tahun 2014 tentang Jabatan Notaris,  Notaris mempunyai kewenangan dalam membuat Akta Pernyataan Keputusan Rapat Umum Pemegang SahamPerseroan Terbatas dan akan menjadi akta otentik jika dibuat kedalam bentuk akta notariil yang disebut Akta Pernyataan Keputusan Rapat Umum Pemegang Saham.

scholarly journals A modification of the CABARET scheme for numerical simulation of one-dimensional detonation flows using a one-stage irreversible model of chemical kinetics

2017 ◽  
pp. 1-10
Author(s):  
А.В. Данилин ◽  
А.В. Соловьев ◽  
А.М. Зайцев
Keyword(s):  
Numerical Simulation ◽  
Chemical Kinetics ◽  
Order Of Approximation ◽  
Governing Equations ◽  
Physical Processes ◽  
Cabaret Scheme ◽  
One Dimensional ◽  
One Stage ◽  
The Right ◽  
Made In

Представлен алгоритм для численного моделирования задач одномерной детонации с использованием одностадийной необратимой модели химической кинетики. Дискретизация уравнений движения произведена согласно балансно-характеристической методике ``кабаре''. Аппроксимация источниковых членов выполнена без расщепления по физическим процессам с использованием неявного подхода с регулируемым порядком аппроксимации. Показано точное согласование параметров моделируемой детонации Чепмена--Жуге с аналитическим решением. Для неустойчивой детонации продемонстрирована зависимость результатов расчета от порядка аппроксимации правых частей. An algorithm for numerical simulation of one-dimensional detonation using a one-stage irreversible model of chemical kinetics is proposed. The discretization of the convective parts of governing equations is made in accordance with the balance-characteristic CABARET (Compact Accurately Boundary Adjusting-REsolution Technique) approach. The approximation of source terms is performed implicitly without splitting into physical processes with a regulated order of approximation. It is shown that the numerically obtained Chapman-Jouget detonation parameters are in exact agreement with the analytical solution. It is also shown that, in the case of unstable detonation, the numerical results are dependent on the order of approximation chosen for the right-hand sides of the governing equations.

scholarly journals Considerations for Planning and Conducting Clinic-Based Research in Physical Therapy

2001 ◽  
Vol 81 (8) ◽  
pp. 1446-1454 ◽  
Author(s):  
G Kelley Fitzgerald ◽  
Anthony Delitto
Keyword(s):  
Physical Therapy ◽  
Clinical Research ◽  
Clinical Setting ◽  
Patient Management ◽  
Physical Therapists ◽  
Factors Affecting ◽  
Conducting Research ◽  
Made In ◽  
Research Studies

Abstract There is growing demand to increase the volume of clinic-based research in physical therapy. Special considerations, unique to the planning and conduct of clinic-based research, need to be addressed to increase the likelihood that these studies will be completed successfully. The purposes of this perspective are to discuss factors affecting clinic-based research and to offer suggestions for addressing these problems when designing and conducting research studies in a clinical setting. This perspective discusses issues such as patient management, determining the availability of target patient populations, acquiring support from physical therapists and physicians, reporting and managing research-related injury or illness, and modifying or terminating projects. Some of the points made in this perspective are illustrated using examples from the authors' experiences in conducting clinical research.

Study of a Hybrid Renewable Energy Platform: W2Power

2018 ◽  
Author(s):  
María J. Legaz ◽  
Daniel Coronil ◽  
Pedro Mayorga ◽  
Javier Fernández
Keyword(s):  
Wave Energy ◽  
Coupled Model ◽  
Offshore Wind ◽  
Offshore Platforms ◽  
Floating Platform ◽  
Control Laws ◽  
Preliminary Study ◽  
Hybrid Renewable Energy ◽  
Fully Coupled ◽  
Made In

The trend in our days seems to drive to hybrid renewable offshore platforms. Several European projects have advanced in this sense. One of these hybrid configurations is obtained by combination of wind and wave energy which allows higher production of electric power. W2Power platform combines offshore wind and wave energy in a semi-submersible floating platform. In this work we present a preliminary study of platform W2Power carried by UCA and collaboration with EnerOcean. A first step of the study, is presented, in this first step the platform and the wave converter are separately studied. A model of these components is created in the software SeaFEM and they are calibrated in the software using previous experimental test tank results. Taking into account this preliminary work, a study of a complete fully coupled model of the W2Power including wind and WECs under different control laws [11] platform will be made in future works.

A Gold Vase of Early Helladic Type

1924 ◽  
Vol 44 (2) ◽  
pp. 163-165 ◽  
Author(s):  
V. Gordon Childe
Keyword(s):  
Cross Section ◽  
Rectangular Cross Section ◽  
Metal Workers ◽  
Single Piece ◽  
To Receive ◽  
Made In

The identification of the Early Helladic civilisation has been the most notable advance made in Greek prehistory since the war. Our knowledge of this earliest Aegean culture on the Mainland is still very fragmentary. But the Louvre has possessed for nearly fifty years a precious document which can now be assigned its true place and sheds an unexpected light on the epoch. It is a gold ‘sauce-boat’ of the form already so familiar in clay at Korakou and Tiryns. Thanks to the courtesy of M. Etienne Michon, Conservator of the Greek and Roman Antiquities, I am permitted to publish this remarkable object (Fig. 1).Save for the handle, our vase has been beaten out of a single piece of metal. The walls are exceedingly thin, not more than ·3 mm. thick, but, as with the gold beakers from Troy, measuring more at the rim, the edge being ·9 mm. across. The base is cupped to form a ring foot, a procedure also adopted by Trojan and Sumerian metal-workers. The handle is formed by a strip of gold with rectangular cross section, flattened at either end to receive the rivets which attach it to the vase. Its three outer sides are engraved with a herringbone pattern. The complete vessel weighs 125·2 grammes.

scholarly journals Journey of ethics – Conducting collaborative research with people with dementia

Dementia ◽  
2020 ◽  
pp. 147130122091988
Author(s):  
Diana Schack Thoft ◽  
Alison Ward ◽  
Jane Youell
Keyword(s):  
Collaborative Research ◽  
Power Relations ◽  
Ethical Framework ◽  
Ethical Considerations ◽  
Doctoral Research ◽  
Research Relationship ◽  
People With Dementia ◽  
Conducting Research ◽  
Made In

This paper explores some of the ethical considerations of working collaboratively with people with dementia within research based upon the experiences, challenges and learning from three doctoral research studies. Focus is on the research relationship with participants and gatekeepers, the importance of setting and access, the power relations within the research and ways in which people with dementia can be supported to be active and have a voice in research. This sits within an ethical framework of principalist ethics and ethics of care to guide not only how research is planned ethically and with consideration of participants, but also how this can support decisions made in situ. The aim is to share, based upon these three studies, ways of managing and working through some of the ethical consideration to support researchers in their decisions in planning and conducting research with people with dementia as active collaborators.

scholarly journals POTENSI DAN PENGEMASAN PAKET EKOWISATA DI KABUPATEN BERAU PROVINSI KALIMANTAN TIMUR

Jurnal IPTA ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 34
Author(s):  
Aji Muhammad Fariz ◽  
I Putu Sudana ◽  
N.G.A.S. Dewi
Keyword(s):  
Data Collection ◽  
Whale Shark ◽  
Literature Study ◽  
Tourist Attractions ◽  
East Kalimantan ◽  
Mirror Lake ◽  
Conducting Research ◽  
Full Day ◽  
Depth Interviews ◽  
Made In

This research was conducted to determine the potential of ecotourism in Berau Regency, East Kalimantan Province so that it can be packaged into an ecotourism package that covers the whole area of Berau Regencey starting from the urban zone, the inland zone and the water zone. This Research was conducted in Berau Regency because Berau Regency has 159 tourist attractions and also its location is close to the location of the new capital. The ecotourism package packaging made in this study is based on the lack of variety of products and tour packages circulating in Berau Regency so that this research is expected to add variety as well as introduce new potentials that can be found in Berau Regency. Data collection techniques used in this study are in-depth interviews, observation, documentation, and literature study. After conducting research in Berau Regency, there are 17 ecoutourism potentials which can be packaged into 4 kinds of ecoutourism packgaes, with details of theree full-day ecotourism packages and one 2-day 1 night ecoutourism packages and the ecotourism package itinerary in this study is made in the form of descriptions, tables, and graphs as well as the type of ecotourism package in this study is ready made tour. The titles of  the ecotourism packages in this study are (1) Berau Culture and City Tour, (2) Berau Mangrove and Sangalaki Island Tour, (3) Orangutan University and Merabu Forest Tour, (2) Mirror Lake and Whale Shark Tour.

scholarly journals Rat pinealectomy: a modified direct visual approach

2009 ◽  
Vol 24 (4) ◽  
pp. 321-324 ◽  
Author(s):  
Carla Cristina Maganhin ◽  
Ricardo Santos Simões ◽  
Luiz Fernando Portugal Fuchs ◽  
Ricardo Martins Oliveira-Filho ◽  
Manuel de Jesus Simões ◽  
...  
Keyword(s):  
Pineal Gland ◽  
Superior Sagittal Sinus ◽  
Subcutaneous Tissue ◽  
Female Rats ◽  
Bone Fragment ◽  
Sagittal Sinus ◽  
Sham Surgery ◽  
Single Piece ◽  
Visual Approach ◽  
Made In

PURPOSE: To report a new, direct visual approach for rat pinealectomy. METHODS: Eighty adult female rats (Rattus norvegicus albinus EPM-1 strain) were weighted and anesthetized intraperitoneally with 15 mg/kg xylazine and 30 mg/kg ketamine. The animal was fastened to a dissection table, an incision was made in the skin and the subcutaneous tissue, bringing the lambda into view. The skullcap was opened with a dental drill, bringing the cerebral hemispheres and the superior sagittal sinus into view. The pineal gland, located under the venous sinus, was removed in a single piece using tweezers. Next, the bone fragment was returned to its place and the surgical layers were sutured. RESULTS: This new technique is easy to be done, avoids bleedings and removes only the pineal gland without damage to the remaining encephalon. In addition it makes possible the achievement of a sham surgery, allowing the pineal gland to remain intact. CONCLUSION: The proposed technique intends to facilitate studies aiming to better understanding the complexity and importance of the pineal gland on reproductive and other body systems.

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