bluuebunny/crossref_metadata_2025 huggingface dataset:
DIAGNOSIS OF BRIDGE BEARINGS BASED ON FIELD MEASUREMENTS
Authors: Shibasaki Naho , Ikeda Mariko , Sakano Masahiro
Published: March 2020

Bridge bearings are the structural members which are installed at the connection between superstructure and substructure in a bridge. They are expected to transfer load between superstructure and substructure, and to accommodate expansion and rotation of superstructure due to live load and temperature change. Bridges are designed based on whole structure models in which bearings show perfect performance. If bearings are deteriorated, the structure system of the whole bridge should be changed, and some damage may occur in superstructure and substructure. Therefore, it is of great importance to maintain bearings in good conditions. In this study, we try to establish quantitative evaluation method for required basic functions (load supporting, horizontal moving and rotating function) of bridge bearings as the structural member, through measuring displacement and stress in several highway bridges in the north area of Japan.
BUSINESS PROCESS THROUGH THE BUILDING LIFECYCLE USING BIM
Authors: Helmus Manfred , Kaufhold Matthias , Kelm Agnes , Khorrami Nahid , Meins-Becker Anica
Published: March 2020

BIM (building information modeling) describes a method to integrate and connect all relevant, building related data into a virtual data model over the whole lifecycle. The superior goal of all BIM-related research projects at the Chair of Construction Management and Economics is therefore to advance the efforts of data model standardization and the corresponding flow of information between all participants involved in a building project. To identify all relevant data, the focus of each project is hence directed to the question who needs which information from whom, how, when and what for. In this context the research project “Development of an ideal chain of process for using the BIM-method during the lifecycle of real estate” aims to develop and define a standardized and idealistic virtual chain of process using BIM. Therefore, the actual process structure (without BIM) will to be analyzed and defined in consideration of relevant regulations, interviews of experts etc. In this respect, the performance spectrum of each participant and the communication as well as information interface will be taken into account. Up from this point the process can be enriched with BIM-content to create an ideal BIM-process-chain. It will be important to develop a most general-purpose to include different variations of project organizations and market players. By doing so, it will be possible to transfer the BIM-method to all real estate and civil construction participants.
BIM-PROCESSES-HEALTH & SAFETY
Authors: Bodtländer Christoph , Helmus Manfred , Kelm Agnes , Meins-Becker Anica
Published: March 2020

BIM describes a method to integrate and connect all relevant, building related data into a virtual data model over the whole lifecycle. The superior goal of all BIM-related research projects at the Chair of Construction Management and Economics is therefore to advance the efforts of data model standardization and the corresponding flow of information between all participants involved in a building project. To identify all relevant data, the focus of each project is hence directed to the question that needs which information from whom, how, when and what for. The aim of the project is the application of the BIM-method and the use of RFID-technology to improve work safety in the real estate and construction industry is to identify, define and standardize information relevant to work safety, so that they can be used for prevention-measures with BIM. Initially therefore all work safety relevant processes have to be identified and defined in regard to the detail content and level of details. This will lead to the possibility of cross-company planning regarding work safety relevant processes with BIM as well as the optimization of work safety during the construction and operating phase in additional use of AutoID-Technologies.
SPIRAL PARABOLIC DOME: HISTORICAL STUDIES OF IRANIAN ARCHITECTURE
Authors: Turk Afshin , Shabani Mohammad , Ghanavatizadeh Shabnam
Published: March 2020

Ancient Dezful city is located in the SW of Iran (5000BC-2016AC) near Dez River. This spiral domes are used to demonstrate the symbolic special constructions which is similar to the construction of Denial’s holy shrine, the Jewish messenger (500BC), the Lion King Yaghob Saffari’s tomb (800AD) and the Rood-band Syd’s burial place (1409AD). These structures are made by simple local materials. The common materials used are bricks and Sarooj mixture. Sarooj is the main mortar, a man-made concrete. After thousands of years, it still stands all kinds of tension, pressure, wind, rain, conflicts and wars, weapons and rockets effects (1980-1988), and sewage exposure. All bricks were set to demonstrate the cubic elements around the spiral curve. It turns around circles with variable radiuses on the spiral path-line which makes a conic parabolic sharp dome. Two domes constructed in each parabolic dome. The first dome is fixed between the supports that are called the inner dome. It was erected on the semi sphere space. The second dome is constructed by the parabolic conic section to demonstrate a beautiful, cultural and architectural masterpiece of engineering. The Main materials are bricks, dolomite, canes, stone blocks and Sarooj, a special mortar. The height of the Spiral Parabolic Dome (SPD) is about 10m and the radius of the inner dome is measured about 2 m with a ratio of 2.5 that would vary with the Geo-technical conditions and the architectural considerations.
APPLICABILITY OF CULTURE PROFILE ON CONSTRUCTION ORGANIZATION
Authors: Willar Debby , Hombokau Chris , Waney Estrellita
Published: March 2020

While dealing with quality and unhealthy competition practices at national level, adaptation of Indonesian construction companies’ effectiveness strongly depends on the nature of the corporate culture. The purpose of this paper is to determine the current and preferred culture profiles of sample construction companies in Indonesia. The research has been conducted using the Organizational Culture Assessment Instrument (OCAI) in the construction companies located in North Sulawesi Province. The findings show that, on average, the sample contractors currently function with domination of the Market type of culture, while Clan has been identified as the preferred culture. A matrix has been developed with respect to the applicability of culture profiles as it relates to organizational leadership, organizational effectiveness, human resources management roles, and quality strategies of the respondents’ companies. The value of the paper is the novelty of findings regarding the existing and preferred culture profiles, which have the potential to strengthen competitive capabilities, employees’ motivation, and customers’ needs among the construction companies, and effectiveness of the contractors’ performance in the country with rich national culture. These findings should help reinforce the need for Indonesian contractors to end current bad practices, and gain benefits from the values of dominant culture profile as to become a reputable construction industry.
DESIGN FOR SAFETY KNOWLEDGE-BASED BIM-INTEGRATED RISK REGISTER SYSTEM
Authors: Hossain Md. Aslam , Abbott Ernest L. S. , Chua David K. H.
Published: March 2020

Safety is a major challenge in the Construction industry. Researchers have shown that many construction fatalities could have been avoided with proper design considerations. Design for safety (DfS) knowledge helps designers to identify how their design may pose a risk during the life cycle of a building facility. Hence, designers can use DfS knowledge to address these safety issues in the design phase. Nevertheless, identified risk and required mitigation of the risk must be noted in a risk register. Moreover, all the risks cannot be addressed or eliminated during design. Hence, residual risks must be addressed during actual construction, operation and maintenance. This study proposes a DfS knowledge-based risk register system that registers design deficient risk with mitigation action and the residual risks that must be addressed during actual construction. The risk register is integrated with the BIM so that the residual risks can be easily visualized in BIM compliant 3D model for further action in later phases. A structure of risk identification procedure incorporating DfS knowledge is described. Identified risks are stored in a database. Mitigation action along with residual risks and responsible persons/parties for a design element are linked with the BIM model. Such early identification of hazard would be very useful to be prepared for any potential risk in advance which can save significant time and cost for the constructor.
SUSTAINABLE ASSESSMENT OF RETAINING WALLS THROUGH AN ACTIVE LEARNING METHOD CONSIDERING MULTIPLE STAKEHOLDERS
Authors: Sierra-Varela Leonardo , Yepes Victor , Pellicer Eugenio
Published: March 2020

The sustainability approach has changed the modern society. Currently, the sustainability takes into consideration, not only the economic and environmental facets, but also the social facet. Taking into account the three facets of sustainability, this paper shows the application of a method of active learning to assess the sustainability of three real retaining walls. A group of 29 students of the Master of Science in Planning and Management in Civil Engineering at the Universitat Politècnica de València has experienced this assessment. The method followed was proposed by academics of the School of Civil Engineering of the Universitat Politècnica de València (Spain) and Universidad de La Frontera (Chile). An approach multi-criteria and a clusters analysis are part of method, which allows developing a participative process with different points of view about the sustainability. The outcomes show that of this way students can forecast impacts from of the integration of design, planning and the location context of the infrastructure. Result evidence that personal values of each student influences the election of the optimal alternative. The paper also identifies the need to strengthen the conceptualization of social criteria in the students training.
FROM PROTEGE TO CUSTOMER: INCREASING STUDENT INFLUENCE IN CIVIL AND STRUCTURAL ENGINEERING EDUCATION
Authors: Quapp Ulrike , Holschemacher Klaus
Published: March 2020

The increasing appearance of fee financed education offers in higher education result in a power shift from higher education institutions in Germany to their students. Thus, for example, students claim more involvement in university decision processes and the right to evaluate lecturers’ teaching skills. This paper is dealing with the development of student rights. It describes the students’ position at universities under higher education policy aspects. A closer look on the rights and duties of students gives an idea of their options to influence civil and structural engineering education. Furthermore, advantages and disadvantages of the increasing influence of students on universities’ decision making processes were examined. That issue is especially discussed under the perspective of the influence on civil and structural engineering education. The conclusion is that an increasing influence of students and customer orientation at universities may influence the working atmosphere at higher education institutions both in a positive as well as in a negative way. Sometimes students have inventive ideas but often they are not able to overview all aspects of university life. Universities must master the balance between the educational standards of a higher education institution and the increasing demands to involve students in institutional decision making processes.
IDENTIFYING BAD PRACTICES: A WAY TO INTRODUCE ETHICS IN THE CLASSROOM
Authors: Gimenez-Carbo Ester , Coll Hugo , Pelufo Mª Jose , Noguera Guillermo , Serna Pedro
Published: March 2020

According to the Civil Engineering Bachelor Degree program, students should have acquired, among other knowledge, the skill: “to understand and assume the ethical and professional responsibility of the activity of the Civil Engineer”. In order to do this, they can take an optional subject (not all the students enroll), called “ethics of civil engineering” and also the transversal skill “ethical, environmental and professional responsibility” is taught in several subjects of the degree program. This communication presents the methodology used in the subject “Constructions Materials” of second degree course to introduce this transversal skill. The great achievement of this methodology is to have this transversal skill present in all work sessions in the classroom, so the skill becomes part of the daily work of the student. Moreover, it presents additional advantages for the evaluation of the skill thanks to the continuous acquisition of evidence.
EXCEL BASED SETTLEMENT OF BEAMS ON ELASTIC FOUNDATIONS WITH FREE-ENDS AND ARBITRARY LOADING
Authors: Al-Khafaji Amir W. , Jacobs Robert
Published: March 2020

The deflection of long footings placed on homogeneous and isotropic soils involves soil-structure differential equations models whose solution may not be possible for most practical problems. The analytical solution of beams on elastic foundation problem involves soil modulus of subgrade reaction and simplifying assumptions relative to applied loading. The exact solutions are available in relatively simple cases of loading, uniform cross sectional properties of the footing and constant soil modulus of subgrade reaction. Therefore, the Finite Difference Method (FDM) or Finite Element Method (FEM), are typically used to compute the deformation of beams with variable loading and geometry resting on elastic foundations with variable modulus of subgrade reaction. The finite differences method was used to solve this problem for long beams with arbitrary loading and constant cross-sections using an Excel Workbook to compute beam deflections providing both numerical and graphical output. The foundation is modeled as a long beam with free ends and a constant modulus of subgrade reaction. The proposed solution presents an efficient method involving a complex ordinary differential equation model for beams on elastic foundations encountered in engineering practice.
AN ESTIMATING METHOD FOR LATERAL BEHAVIOR OF PILED-RAFT FOUNDATION
Authors: Yamamoto Haruyuki , Huang He
Published: March 2020

Some simplified design methods were proposed to predict behavior of lateral loaded piled-raft foundations on homogenous soil. One of them is the cone model method. However, only one average solution of pile behavior can be given by this method. It can’t evaluate the location factors of piles. Therefore, this paper describes a new simplified method to predict behavior of lateral loaded piled raft foundations covering the location factor of piles. At first, ground surface displacement is derived theoretically by Cerutti’s solution, then assuming that the raft foundation has rigid stiffness, these displacements are the same to calculation lateral loading distribution. Second, the ground displacement where pile placed could be estimated under calculated lateral loading. Third, the piles behavior are evaluated based on these lateral ground displacements. In addition, 3-D FEM numerical analysis were performed to compared with these solutions.
HEALTH OF GREEN BUILDING OCCUPANTS: BOTH INDOOR AND NEIGHBORHOOD ENVIRONMENTS MATTER CONTRACTS
Authors: Cha Isabelle Y.S. , Liu Anita M. M. , Tom Felix T.H.
Published: March 2020

Commonly adopted green building standards, such as LEED and BEAM PLUS, tend to focus on the sustainable performance of buildings. There is a lack of comprehensive consideration on the associations between building environment and health of occupants, let alone the impact of neighborhood environment on the occupants. This study thus aims to investigate the impact and interplay of indoor and neighborhood environment on health of green building occupants. To achieve this aim, two green buildings, which locate in contrasting neighborhood environment in Hong Kong, are selected for case study. Based on the data collected by post-occupancy evaluation (occupant health), indoor environment assessment (thermal comfort, indoor air quality, ventilation, visual comfort, and acoustic comfort) and neighborhood environment assessment (neighborhood building density, neighborhood building height, neighborhood green area, and neighborhood cleanliness) through questionnaire survey, the results reveal that the relationship between indoor environment and occupant health is significantly moderated by neighborhood building height. The results lay foundation on how the green building standards can be further developed to enhance occupant health by taking neighborhood environment into account.
CREEP CHARACTERISTICS OF CHALK MARL UNDER UNIAXIAL AND CONFINED COMPRESSION STATE STRESS
Authors: Al-Mohamadi Nuri
Published: March 2020

This paper studies the time-dependent deformation of chalk marl under uniaxial state of stress in a specially built creep rigs, and confined compression stress state. The tests carried out include: six uniaxial creep tests with vertical and lateral deformation measurements, at different stress levels which lasted for 75 to 268 days, six oedometer creep tests under different stress intensities and different loading conditions which lasted for 80 to 250 days. All tested samples were trimmed from 113 mm diameter cores. For uniaxial tests 0.5% axial strain occurred almost instantaneously in the first series subjected to a stress level of 80%. In the second series subjected to a stress level of 40%, the average initial strain was 0.25% which indicate clearly their stress level dependency. After 75 to 150 days creep period, the measured average creep strain was 0.33% for the first series, which represents 57% of the consolidation strain. For series 2 the average creep strain = 0.26%, which represents 54% of the consolidation strain. This implies that the proportional creep ratio Cr = (Et-E1) / E1 is independent of the applied stress level, where Et strain at any time t, E1 strain at one day. For 1-D creep tests E1 and the proportional strain (Et-E1) are not affected significantly by the intensity of applied creep stress, while both of them are highly influenced by the method of load application. From these results, it can be concluded that creep deformation constitutes an important part of the total deformation of chalk marl.
INFLUENCES ON INNER CITY CONSTRUCTION SITES: A COMPARISON OF THEORY AND PRACTICE
Authors: Bauer Bernhard , Haider Ulrike , Koppelhuber Jörg , Heck Detlef
Published: March 2020

In recent decades, social development and demographic changes have led to a significant decline of the number of new building constructions and an increase of refurbishments and building activities in projects in the built environment. Those changes force building companies and construction site managers to adapt their site management concepts due to inner city influences. Especially emissions like noise and dust, transports, and construction site waste should be limited to a minimum to prevent inhabitants and neighbors from surpassing inconveniences. To compare theory and practice in terms of efficient and environmental friendly construction site management in inner cities, qualitative interviews were taken, to figure out what actions are applicable to keep emissions on a minimum level and where the construction processes and logistic can be improved. The results show, that possibilities-like shifting the transports to railway-could be a proper approach, but are seldom applied. Due to cost and logistical reasons, most efforts are put into neighbor involvement, rather than changing the process of building itself.
CALCULATION OF THE LABOR CONSUMPTION RATE FOR SHUTTERING WORKS WHILST CONSIDERING UNCERTAINTIES
Authors: Hofstadler Christian , Kummer Markus
Published: March 2020

This paper focuses on the systematic consideration of uncertainties in calculating labor consumption rates for shuttering works. The magnitude of labor consumption rates results from a production system assessment. This paper outlines the basics of labor consumption rates and important factors that influence their level. A specific value must be selected at the end of any calculation. In labor-intensive activities, labor consumption rates are highly significant for calculating construction time and cost. To make important decisions, it is essential to know the chance/risk ratio relative to key parameters. For any quotation, this ratio illustrates the chances or risks associated with certain works and the entire project. To select the chance/risk ratio, existing uncertainties must be integrated into the probabilistic calculation (using Monte Carlo simulations) by distribution functions. The probabilistic calculation of labor consumption rates therefore creates the basis for any conclusions regarding chances and risks associated with specific costs or prices. Appropriate precautions can be taken as part of systematically managing chances and risks. As a result, the process of preparing and making decisions is characterized by a more systematic and target-driven approach. Furthermore, decision reliability and transparency are improved. An example of calculating the labor consumption rate for shuttering works demonstrates the influence of the selected distribution functions on results. It also illustrates its subsequent effect on the chance/risk ratio of adopted decisions.
EFFECT OF FLY ASH CONTENT IN MBC BONDER FOR SUSTAINABLE CFRP RETROFIT
Authors: Sainsbury Reece , Raghavendra Vasudeva Upadhyaya , Suntharavadivel T. G. , Duan Kai
Published: March 2020

The rehabilitation and strengthening of reinforced concrete structures have been attracting increasing attention due to various factors including increase in traffic volume and weight, structural aging and environmental impact. Various techniques such as grouting, guniting and external post-tensioning are being used to retrofit or strengthen deteriorated members. With recent developments in the application of fiber composites in structural engineering, externally bonded Fiber Reinforced Polymer (FRP) system has become one widely used repair techniques because of its durability and long-term cost-effectiveness. In the FRP bonded retrofit technique, epoxy is often used as the bonding material. Because of environmental impact and health issues, construction sector is always looking for sustainable alternative bonding materials for FRP retrofit. A new trend on using Mineral Based Composites (MBC) has garnered the attention for a possible alternative to replace the use of harmful epoxy in FRP retrofit. MBC is formed by mixing the cement with some other minerals together and some concrete admixtures. As a part of a project to investigate optimum mix for the MBC, a series of tests were carried out to study the effect of fly ash content in the MBC mix as a partial replacement of cement. This paper discusses the results from this experimental program and evaluates the optimum fly ash content for the MBC and its associated properties.
PROJECT MANAGEMENT METHODS FOR PUBLIC INFRASTRUCTURE PROJECTS
Authors: Borges Fernanda , Melhado Silvio
Published: March 2020

Given the importance of public infrastructure projects to the civil construction and considering the Brazilian context, the aim of this paper is to improve the management efficiency concerning project management methods applied to this kind of construction project. Using a multiple case study approach, the research has examined two large infrastructure projects and identified the critical points to achieve project's success. One project is from the sanitation sector and the other from the transportation sector, both developed in the Metropolitan Area of Sao Paulo and its surroundings. Public infrastructure projects normally have high levels of technical and management complexities. In recent years in Brazil, infrastructure projects have been showing increasing costs and a growing number of active companies. Moreover, these kinds of projects tend to interfere in the urban and rural areas in the cities, presenting many different influences and interests coming from several stakeholders and, consequently, bringing a high level of management complexity. This paper presents the initial results of the case studies carried out in order to identify guidelines for the application of project management methods in public infrastructure projects. Continually taking into account the context and the specific needs of each project, these guidelines intend to aid structuring, planning and maximizing the results, the final quality of the construction products and contribute with the improvement of project management practices adopted.
MULTI-OBJECTIVE OPTIMIZATION FOR CONFLICT RESOLUTION IN CONSTRUCTION PROJECTS
Authors: Lee Changjun , Han Seung Heon , Jang Woosik , Jang Wooyung
Published: March 2020

In construction projects, the different interests and objects of stakeholders can result in increased occurrences of conflict, which can bring negative effects or even project termination. In particular, understanding the causes and finding a solution get more difficult because of the larger and more complex projects. Thus, quantitative research should be conducted to find conflict alternatives. This study aims to find optimal alternative combinations for conflict resolution in public projects. To understand level of conflict and effect of conflict alternatives, the survey was conducted in three points of view: 1) economic; 2) social; and 3) environmental. After survey, the optimization process consists of two steps. First, weights of conflict factors are estimated through regression analysis. Second, multi-object functions which are each economic impact, social impact, environmental impact are optimized. For multi-objective optimization, optimal alternative combinations could be deducted and results present how alternatives affect to conflict level. Although there are some limitations, this result is significant in that it has found an optimal alternative considering three impacts in order to select a combination of alternatives for conflict resolution.
STUDY OF REPLACEMENT OF SAND BY EXPANDED POLYSTYRENE IN STRUCTURAL LIGHTWEIGHT CONCRETE
Authors: Tostes Mateus Titon , Hastenpflug Daniel
Published: March 2020

The search for more efficient concrete structures requires use of new materials in the developed of new concretes. With this objective, it was proposed in this study the substitution of Part of the medium sand of the lightweight structural concrete for expanded polystyrene (PS). It was replaced 5%, 10% and 20% of the sand to observe the changes in compressive strength, flowability, absorption, density and modulus of elasticity of these concretes. The results of the study show that there was an increase in the absorption and loss in the compressive strength and modulus of elasticity. Also, there was a significant increase in the flowability and reduction in the density of these concretes. Even with the replacement of part of the medium sand by expanded polystyrene, the concretes developed were classified as lightweight structural concretes, showing the applicability of this substitution in concrete designs.
BOND AND FLEXURAL BEHAVIOR OF SELF-CONSOLIDATING CONCRETE BEAMS REINFORCED WITH GFRP BARS
Authors: Krem Slamah , Soudki Khaled
Published: March 2020

Self-consolidating concrete (SCC) is widely used in the construction industry. SCC is a high-performance concrete with high workability and consistency allowing it to flow under its own weight without vibration. Despite the wide spread of SCC applications, bond behavior of FRP bars embedded in SCC beams has not been fully studied. This paper presents an experimental and analytical analysis of fifteen beams reinforced with glass fiber reinforced polymer (GFRP) bars. The test parameters were the concrete type, bar diameter, concrete cover thickness and embedment length. All beams were tested in four-point bending to failure. The average bond stresses of GFRP bars in SCC were found comparable to those in NVC. However, FRP bars embedded in SCC beams had higher bond stresses within uncracked region of the beams than those embedded in NVC beams. In contrast, GFRP bars in SCC had lower bond stresses than FRP bars in NVC within the cracked region. Results indicated that when cover concrete thickness dropped less than 2 db, the splitting bond failure is predominant.
Evaluation of Boat Lifting System Using A Multiple-Drum Winch
Authors: Asmara I Putu Sindhu , Yudo Hartono
Published: March 2020

Material handling equipment is designed or selected based on two factors, the aspects of technical and economic. Technical aspects of a boatlift are designated by technical specifications that can meet with the need to lift and move a boat from land to waterway and vice versa. Boatlift is a type of Rubber Tyred Gantry crane specifically designed for moving of small craft, small and medium vessels with a capacity of 10 tons to 600 tons. Boatlift with a capacity of 5 tons is very rarely to find and very different from other types of cranes such as overhead cranes that are easy to find. Boatlift with a capacity of 5 tons can be found at the Shipbuilding Institute of Polytechnic Surabaya, but it has a weakness. The boats experience an un-synchronize movement during the lifting process. This article provides the design of a boatlift pulley system with a capacity of 5 tons using a multiple-drum winch and is capable of lifting the boat at an even keel condition. The evaluation was carried out on the existing system to find the cause of the problem. The correction on the pulley system of the boatlift has been recommended without the replacement of wire rope, brakes, motor, and the multiple-drum of the winch. The weaknesses of boat lifting could be overcome by using a pulley system 8/2/2/1-DeBe + spreader.
An Analysis on the Spread Mooring of the Belida FSO Induced by Squall Loads
Authors: Murdjito M , Pravitasari Inneke Yulistanty , Djatmiko Eko Budi
Published: March 2020

Squall is the occurrence of a sudden sharp increase in wind speed, thus amplifies sea environmental loads. In the South of Natuna Sea, squall can reach an intensity of up to 50 m/s or close to 100 knots. In this water, the Belida FSO operates at a water depth of 77.0 m, tethered to the seabed by a spread mooring system. Squall’s impacts on the FSO mooring system has been examined by implementing time-domain simulations accommodated in a numerical model based on the 3-D wave diffraction theory. The simulations were performed by varying the squall duration of escalation, i.e. 2.5, 5.0, and 10.0 minutes, for the load cases of 1-year extreme operational and 100-year extreme survival conditions propagating at 0°, 45°, 90°, 135°, 180°. The three squall durations of escalation substantially increase the significant wave height Hs by averagely 60%, 50% and 34%, respectively. The largest of the maximum mooring tension due to the sea load directions is found to be brought about the 45° load when magnified by the squall with a 2.5-minute duration of escalation. In this respect, the largest intensities of the operational and survival tension loads may reach some 2,027 kN and 3,318 kN, respectively, which are eventually far below the MBL of 7,685 kN. The largest x-axis offsets in operational and survival conditions are 3.94 m and 10.21 m, respectively. Whereas the largest y-axis offsets for operational and survival loads are found to be 13.31 m and 15.48 m. These y-axis offset intensities are larger than the limiting criteria, i.e. 15% of the water depth or 11.55 m.
Artin L-functions of almost monomial Galois groups
Authors: Cimpoeaş Mircea , Nicolae Florin
Published: March 2020

If

K
/
ℚ

{K/\mathbb{Q}}

is a finite Galois extension with an almost monomial Galois group and if

s
0

∈

ℂ
∖

{
1
}

{s_{0}\in\mathbb{C}\setminus\{1\}}

is not a common zero for any two Artin L-functions associated to distinct complex irreducible characters of the
Galois group, then all Artin L-functions of

K
/
ℚ

{K/\mathbb{Q}}

are holomorphic at

s
0

{s_{0}}

. We present examples and basic properties of almost monomial groups.
An extension of the Muckenhoupt–Wheeden theorem to generalized weighted Morrey spaces
Authors: Mustafayev Rza , Kucukaslan Abdulhamit
Published: March 2020

In this paper, we find the condition on a function ω and a weight v which ensures
the equivalency of norms of the Riesz potential and the fractional maximal function in generalized weighted Morrey spaces

ℳ

p
,
ω

⁢

(

ℝ
n

,
v
)

{{\mathcal{M}}_{p,\omega}({\mathbb{R}}^{n},v)}

and generalized weighted central Morrey spaces

ℳ
˙

p
,
ω

⁢

(

ℝ
n

,
v
)

{\dot{\mathcal{M}}_{p,\omega}({\mathbb{R}}^{n},v)}

, when v belongs to the Muckenhoupt

A
∞

{A_{\infty}}

-class.
Uniqueness for the inverse fixed angle scattering problem
Authors: Barceló Juan Antonio , Castro Carlos , Luque Teresa , Meroño Cristobal J. , Ruiz Alberto , Vilela María de la Cruz
Published: March 2020

We present a uniqueness result in dimensions 3 for the inverse fixed angle scattering problem associated to the Schrödinger operator

-
Δ

+
q

{-\Delta+q}

, where q is a small real-valued potential with compact support in the Sobolev space

W

β
,
2

{W^{\beta,2}}

, with

β
>
0

.

{\beta>0.}

This result improves the known result [P. Stefanov,
Generic uniqueness for two inverse problems in potential scattering,
Comm. Partial Differential Equations 17 1992, 55–68], in the sense that almost no regularity is required for the potential.
The uniqueness result still holds in dimension 4, but for more regular potentials in

W

β
,
2

{W^{\beta,2}}

, with

β
>

2
/
3

{\beta>2/3}

.
The proof is a consequence of the reconstruction method presented in our previous work, [J. A. Barceló, C. Castro, T. Luque and M. C. Vilela, A new convergent algorithm to approximate potentials from fixed angle scattering data,
SIAM J. Appl. Math. 78 2018, 2714–2736].
Strongly s-dense injective hull and Banaschewski’s theorems for acts
Authors: Barzegar Hasan
Published: March 2020

For a class 𝓜 of monomorphisms of a category, mathematicians usually use different types of essentiality. Essentiality is an important notion closely related to injectivity. Banaschewski defines and gives sufficient conditions on a category 𝓐 and a subclass 𝓜 of its monomorphisms under which 𝓜-injectivity well-behaves with respect to the notions such as 𝓜-absolute retract and 𝓜-essentialness.

In this paper, 𝓐 is taken to be the category of acts over a semigroup S and 𝓜
sd
to be the class of strongly s-dense monomorphisms. We study essentiality with respect to strongly s-dense monomorphisms of acts. Depending on a class 𝓜 of morphisms of a category 𝓐, In some literatures, three different types of essentialness are considered. Each has its own benefits in regards with the behavior of 𝓜-injectivity. We will show that these three different definitions of essentiality with respect to the class of strongly s-dense monomorphisms are equivalent. Also, the existence and the explicit description of a strongly s-dense injective hull for any given act which is equivalent to the maximal such essential extension and minimal strongly s-dense injective extension with respect to strongly s-dense monomorphism is investigated. At last we conclude that strongly s-dense injectivity well behaves in the category Act-S.
Returning functions with closed graph are continuous
Authors: Banakh Taras , Filipczak Małgorzata , Wódka Julia
Published: March 2020

A function f : X → ℝ defined on a topological space X is called returning if for any point x ∈ X there exists a positive real number Mx
such that for every path-connected subset Cx
⊂ X containing the point x and any y ∈ Cx
∖ {x} there exists a point z ∈ Cx
∖ {x, y} such that |f(z)| ≤ max{Mx
, |f(y)|}. A topological space X is called path-inductive if a subset U ⊂ X is open if and only if for any path γ : [0, 1] → X the preimage γ
–1(U) is open in [0, 1]. The class of path-inductive spaces includes all first-countable locally path-connected spaces and all sequential locally contractible spaces. We prove that a function f : X → ℝ defined on a path-inductive space X is continuous if and only if it is returning and has closed graph. This implies that a (weakly) Świątkowski function f : ℝ → ℝ is continuous if and only if it has closed graph, which answers a problem of Maliszewski, inscribed to Lviv Scottish Book.
Filippov solutions of vector Dirichlet problems
Authors: Machů Hana
Published: March 2020

If in the right-hand sides of given differential equations occur discontinuities in the state variables, then the natural notion of a solution is the one in the sense of Filippov. In our paper, we will consider this type of solutions for vector Dirichlet problems. The obtained theorems deal with the existence and localization of Filippov solutions, under effective growth restrictions. Two illustrative examples are supplied.
Hamiltonicity of a class of toroidal graphs
Authors: Maity Dipendu , Upadhyay Ashish Kumar
Published: March 2020

If the face-cycles at all the vertices in a map are of same type then the map is said to be a semi-equivelar map. There are eleven types of semi-equivelar maps on the torus. In 1972 Altshuler has presented a study of Hamiltonian cycles in semi-equivelar maps of three types {36}, {44} and {63} on the torus. In this article we study Hamiltonicity of semi-equivelar maps of the other eight types {33, 42}, {32, 41, 31, 41}, {31, 61, 31, 61}, {34, 61}, {41, 82}, {31, 122}, {41, 61, 121} and {31, 41, 61, 41} on the torus. This gives a partial solution to the well known Conjecture that every 4-connected graph on the torus has a Hamiltonian cycle.
“Tercer mundo global”: as várias identidades dos Secos & Molhados (1974)
Authors: Alecrim Thales Reis
Published: March 2020

O presente artigo objetiva compreender as várias identidades sobrepostas, por vezes contraditórias ou confluentes, na canção Tercer Mundo do conjunto Secos & Molhados. A canção é a primeira faixa do lado A do disco Secos & Molhados II (1974). A letra é um fragmento da Prosa del Observatório (1972) do escritor Julio Cortázar. A prosa trata, no plano metafórico, da insuficiência da razão para compreendermos o mundo. A canção, no rastro das ideias da prosa, mobilizou referências que se alinhavam a essa perspectiva, mesclando elementos estético-ideológicos de ideias que previam uma união latino-americana, ibérica, terceiro mundista e ligada à contracultura. Dessa forma, diante desse quadro complexo, seguimos um caminho de análise que visa identificar o público consumidor e como essas identidades se configuravam e, dependendo do caso, se uniam ou excluíam.Palavras-chave: América latina. Terceiro mundo. Canção. Contracultura. Identidade.AbstractThe present article aims to understand the various identities, sometimes contradictory or confluent, in the song Tercer Mundo by the group Secos & Molhados. The song is the first track on side A of the album Secos & Molhados II (1974). The lyrics are a fragment of the Prosa del Observatorio (1972) by the writer Julio Cortázar. At the metaphorical level, the prose deals with the insufficiency of the rationalist paradigm to understand the world. The song, in the vein of prose ideas, mobilized references that aligned with this perspective, mixing aesthetic-ideological elements of ideas that foresaw a Latin American, Iberian, third wordlist, and linked to the counterculture union. Thus, in the face of this complex picture, we follow a path of analysis that aims to identify the consumer public and how these identities were configured and, depending on the case, were united or excluded.Keywords: Latin America. Third World. Song. Counterculture. Identity.
Foucault e Latour – a Revolução copernicana da historiografia: por uma desnaturalização dos objetos (o caso da história das doenças)
Authors: Ferreira Antonio Nelorracion Gonçalves
Published: March 2020

Este artigo analisa as contribuições do filósofo Michel Foucault e do sociólogo Bruno Latour na renovação do conhecimento histórico através de uma perspectiva radical que leva a desnaturalização dos objetos no processo do conhecimento. Por meio da abordagem de um campo específico, como o da história das doenças, demonstraremos a originalidade desses pensadores transversais e suas contribuições na produção de novos conceitos e métodos para o ofício do historiador.Palavras-chave: História; Doença; Conhecimento.Abstract This paper analyses the contributions of the philosopher Michel Foucault and of the sociologist Bruno Latour in renewal of historical knowledge through a radical perspective which leads to the denaturalization of objects in the process of knowledge. Through the approach of a specific field, such as the History of diseases, we will demonstrate the originality of these transversal thinkers and their contributions in the production of new concepts and methods for the work of the historian.Keywords: History; Disease; Knowledge.
História & Cidade – História Local: experiências de uma aula oficina
Authors: Pereira Bruno César , Ribas Fernanda
Published: March 2020

O presente trabalho tem por objetivo analisar os resultados de uma “aula-oficina” realizada entre os meses de outubro e novembro de 2018, com alunos (as) dos 3ºs anos do Ensino Médio da escola Antônio Xavier da Silveira, situado no município de Irati-PR. Esta atividade, intitulada “Projeto História & Cidade – História Local” foi vinculada ao Programa Residência Pedagógica e contou com a participação de 109 estudantes desta instituição de ensino. A atividade em questão contou com seis horas aulas presenciais para a realização da oficina, que se dividiu entre duas para explicações teórico-metodológicas sobre o tema central, duas horas aula para a apresentação dos (as) alunos (as) dos resultados de suas pesquisas e, por fim, duas para a devolutiva das pesquisas.Palavras-chave: Ensino de História, Residência Pedagógica, Aula-oficina.AbstractThe objective of this study is to analyze the results of a "workshop class" held between October and November, with students from the 3rd year of High School of the Antônio Xavier da Silveira school, located in the municipality of Irati- PR. This activity, titled "Project History & City - Local History" was linked to the Pedagogical Residence Program and had the participation of 109 students from this educational institution. The activity in question counted on five hours of face-to-face classes for the workshop, which was divided between two for theoretical-methodological explanations on the central theme, two hours for students to present their research results and, finally, one for the return of the research.Keywords: History teaching, Pedagogical Residence, Classroom-workshop.
O Julgamento do Diabo: análise da figura demoníaca em Nardo Di Cione e Michelangelo, entre a Peste Bubônica e o Inferno de Dante (1350 - 1550)
Authors: Schio Jordana Eccel
Published: March 2020

Este artigo apresenta alguns resultados de pesquisa que buscou analisar de que forma o Diabo foi representado em duas fontes pictóricas com temática escatológica, uma de meados do século XIV e outra de meados do século XVI. As fontes são analisadas através do método iconográfico e iconológico proposto por Erwin Panofsky (1892 – 1968), visto que os documentos são pinturas murais. Ademais, o estudo é perspectivado pela influência da Peste Bubônica na forma que a figura demoníaca é representada, além de estabelecer relações entre elas com outro tipo de expressão cultural do período, a obra literária A Divina Comédia, escrita por Dante Alighieri (1265 – 1321).Palavras-chave: Diabo, Peste Bubônica, Idade Média, Renascimento.Abstract This article presents some results from the study that sought to analyze how the Devil was represented in two pictorial sources with an eschatological theme, one from the middle of the 14th century and another from the middle of the 16th century. The sources were analyzed through the iconographic and iconological method proposed by Erwin Panofsky (1892 – 1968), since the documents are mural paintings. In addition, the study was projected by the influence of the Bubonic Plague in the form that the demonic figure is represented, besides establishing relations between them with another type of cultural expression of the period, the literary work The Divine Comedy, written by Dante Alighieri (1265 – 1321).Keywords: Devil, Bubonic Plague, Middle Ages, Renaissance.
Sobre a história que a história não conta: por contranarrativas epistemológicas
Authors: Souza Carll , Oliveira dos Santos Elisabeth Maria
Published: March 2020

A construção do conhecimento é muito diversa. Entre essa diversidade, acontecem historicamente disputas pela hegemonia do saber que por um longo tempo canonizaram nos anais da história uma perspectiva eurocêntrica e logo mais norte-americana. Sabendo disso, o presente trabalho pretende, a partir do estudo de três casos, evidenciar a materialidade do epistemicídio em nível estrutural. Neste ensaio apresenta-se a experiência de três mulheres negras inseridas em espaços de produção e promoção do saber, bem como suas respectivas tentativas por disputar um lugar na produção de conhecimento. Tais experiências são impactadas pela presença predominante da perspectiva branca e suas narrativas históricas no campo científico.Palavras Chave: Contranarrativas, Epistemicídio Racial, Descolonização.AbstractThe construction of knowledge is very diverse. Among this diversity, there are historically disputes over the hegemony of knowledge that for a long time canonized in the annals of history a Eurocentric and then more North American perspective. Knowing this, the present work intends, from the study of three cases, to evidence the materiality of epistemicide at a structural level. This article presents the experience of three black women inserted in spaces of production and promotion of knowledge, and their respective attempts to compete for a place in the production of knowledge. Such experiences are impacted by the predominant presence of the white perspective and its historical narratives in the scientific field.Keywords: Epistemological Counter-Narrative, Black Epistemicide, Decolonization.
Expediente
Authors: Ofícios de Clio Equipe
Published: March 2020

Dados da Revista e Expediente - Vol. 4, nº 6
Low protein diet and methyl-donor supplements modify testicular physiology in mice
Authors: Morgan Hannah L , Ampong Isaac , Eid Nader , Rouillon Charlène , Griffiths Helen R , Watkins Adam J
Published: March 2020

The link between male diet and sperm quality has received significant investigation. However, the impact diet and dietary supplements have on the testicular environment has been examined to a lesser extent. Here, we establish the impact of a sub-optimal low protein diet (LPD) on testicular morphology, apoptosis and serum fatty acid profiles. Furthermore, we define whether supplementing a LPD with specific methyl donors abrogates any detrimental effects of the LPD. Male C57BL6 mice were fed either a control normal protein diet (NPD; 18% protein; n = 8), an isocaloric LPD (LPD; 9% protein; n = 8) or an LPD supplemented with methyl donors (MD-LPD; choline chloride, betaine, methionine, folic acid, vitamin B12; n = 8) for a minimum of 7 weeks. Analysis of male serum fatty acid profiles by gas chromatography revealed elevated levels of saturated fatty acids and lower levels of mono- and polyunsaturated fatty acids in MD-LPD males when compared to NPD and/or LPD males. Testes of LPD males displayed larger seminiferous tubule cross section area when compared to NPD and MD-LPD males, while MD-LPD tubules displayed a larger luminal area. Furthermore, TUNNEL staining revealed LPD males possessed a reduced number of tubules positive for apoptosis, while gene expression analysis showed MD-LPD testes displayed decreased expression of the pro-apoptotic genes Bax, Csap1 and Fas when compared to NPD males. Finally, testes from MD-LPD males displayed a reduced telomere length but increased telomerase activity. These data reveal the significance of sub-optimal nutrition for paternal metabolic and reproductive physiology.