Effects of Size, Section Pattern, and Material on the Tensile Performance of Filled Thin-Walled Tubes

The tensile performance of ductile tubes can be enhanced by the application of fillers. Research studies on the mechanical performance of filled tensile tubes have mainly focused on experiments and numerical simulations on concrete-filled steel tube (CFST) components, while the effects of factors such as size, section pattern, and material of filled tensile tubes on their performance have rarely been studied. In this research, the effects of size, section pattern, and material on the tensile performance of filled tubes have been evaluated through theoretical studies, simulations, and experiments. The tensile strength reinforcement and deformation weakening coefficients of filled circular thin-walled tubes corresponding to hollow tubes were theoretically deduced, and the influencing factors of the two were parametrically evaluated. Tensile performances of filled tubes with circular and square sections were compared with each other through numerical methods. In the current research, the circular section was optimized and prestressed circular hollow support section was proposed. Tensile fracture tests were performed on circular thin-walled tubes made of six different materials to determine material effects on the tensile performance of these structures. It was also found that metallic materials with good ductility significantly enhanced the tensile performance, fracture toughness, and energy consumption of test components containing prestressed filler.

The Influence of Leadership Style, Motivation, and Discipline on Employee Performance of PT Intikom Berlian Mustika

This study aims to determine what factors influence the Leadership Style, Motivation, and Discipline on Employee Performance. The method used in this research is quantitative research methods. The population in this study were all employees of PT Intikom Berlian Mustika in the Operation Support section with a sample of all employees of PT Intikom Berlian Mustika in the Operation Support section, except for a leader. The instrument in this study used an open questionnaire using a Likert scale to measure the attitudes, opinions and perceptions of a person or group of social events or symptoms. The results of this study were partially tested for leadership style variables with a statistical value of 1.585 <2.162, so Ho was accepted, meaning that there was no significant effect of the leadership style variable on employee performance. The partial test results for the motivation variable with a statistical value of 1.376 <2.162, then Ho is accepted, which means that there is no significant effect of the motivation variable on employee performance, so Ho is accepted, which means that there is no significant effect of the motivation variable on employee performance. The partial test results for the discipline variable with a statistical value of 5.969> 2.162, then Ho is rejected, which means that there is a significant effect of the discipline variable on employee performance. Simultaneous test results with a value of 19.288> 2.77, then Ho is rejected, which means that leadership style, motivation, and discipline simultaneously or jointly affect the performance of employees of PT Intikom Berlian Mustika.

Assessment of the resistance of monolithic reinforced concrete bearing systems to progressive collapse based on the principle of the level of permissible damage

The paper presents a method of using the reduction factor to ensure the stability of monolithic reinforced concrete bearing structures to progressive collapse. Studies have established the values of the reduction factor based on the accepted value of the relative deformation corresponding to the formation of an admissible zone of "destruction" of the support section of the overlap under the action of transverse forces, as the main criterion for asessing the stress-strain state of monolithic reinforced concrete structures for the failure mode of a vertical supporting structure. The accepted deformation criteria for a special limiting state correctly reflect the conditions for the formation of an admissible amount of damage to elements of bearing reinforced concrete systems. The reduction factor (K1) obtained in the framework of the research performed is the most important deformation characteristic of the special limiting state of monolithic reinforced concrete bearing systems of buildings and structures for an emergency design situation associated with the failure of a local structural element.

The many writing systems of Mansi: challenges in transcription and transliteration

The paper at hand presents the recently published COPIUS Orthographic Toolset’s Mansi module. This open-source software, part of the COPIUS drive to create necessary international infrastructures for teaching/learning and researching Uralic languages, allows for rule-based transcription between four basic writing systems historically used for Mansi: the Cyrillic alphabet, the Latin-based Unified Northern Alphabet (UNA), Finno-Ugric Transcription (FUT), and the International Phonetic Alphabet (IPA). The software aims to take variation in the usage of these respective writing systems into consideration as best possible in a purely rule-based approach currently lacking lexical support. Section 1 will give a short summary of the history of Mansi literacy and aims to elucidate how changing trends, both local and Russia-wide, influenced the manner in which Mansi was captured in writing by scientists and speakers throughout history. Section 2 will give an overview of (Northern) Mansi phonology and discuss how difficult aspects of it are handled in the writing systems under consideration. Finally, Section 3 will illustrate the transcription software, in its current version, in action, with a sample text transcribed from each of the four writing systems under consideration into the three other ones.

To improve the contact adaptability of mechanical roof support

The article proposes a constructive technical solution to increase the contact adaptivity of the mechanical roof support. The developed solution of the mechanized support section is able to adapt to changing mining and geological conditions in the process of excavation of the mining pillar, which increases the efficiency and safety of coal excavation in the longwall.

Evaluasi Kapasitas Elemen Struktur Eksisting Food Court Untuk Perencanaan Cinemaxx Mal Pekanbaru

[ID] Evaluasi Kapasitas Struktur Eksisting Area Food Court seluas 1024m2 yang dialihfungsikan sebagai Cinemaxx. Penelitian ini dimaksudkan untuk mengetahui kapasitas izin dari elemen struktur eksisting pada elemen balok dan pelat lantai dengan memberikan beban hidup beragam. Struktur dimodelkan dengan menggunakan bantuan program ETABS 2015 untuk menganalisis gaya dalam pada elemen balok. Sedangkan untuk menganalisis gaya dalam pada elemen pelat menggunakan bantuan program SAP 2015. Adapun area yang ditinjau pada evaluasi ini yaitu pelat lantai-3 As-J s/d As-R dan As-2 s/d As-5. Hasil evaluasi menunjukkan bahwa pelat lantai eksisting pada bentang X dengan dan tanpa memperhitungkan defleksi balok, dinyatakan aman (OK) untuk beban hidup 400 & 500 kg/m2, untuk beban hidup 600 kg/m2 dinyatakan KRITIS dan untuk beban hidup 700 kg/m2 dinyatakan tidak aman (NO-OK). Pada pelat lantai, pelat bentang Y hanya beban hidup 400 kg/m2 yang dinyatakan aman (OK), beban hidup 500 kg/m2 dinyatakan KRITIS, dan beban hidup 600 kg/m2 dinyatakan tidak aman (NO-OK). Pelat lantai tanpa memperhitungkan pengaruh defleksi dari balok sekelilingnya atau dengan asumsi pelat sebagai beban, untuk semua beban hidup nya mulai dari 400, 500 dan 600 kg/m2 dinyatakan aman (OK). Momen lentur balok induk 350 x 650 pada tumpuan dinyatakan aman (OK) untuk semua beban hidup mulai dari 500 kg/m2 s/d 800 kg/m2. Sedangkan area lapangan dinyatakan (OK) untuk beban hidup 500 & 600 kg/m2; untuk beban hidup 700 kg/m2 dinyatakan tidak aman (NO-OK). [EN] The evaluation of existing food court structural capacity with area size 1024m2 planned to be transformed to Cinemax. This research is purposed to determine permit capacity of existing structural elements on the beam and slab elements by providing various live loads. The structure is modeled using the ETABS 2015 program to analyze the internal forces on the beam elements. Then to analyze forces within slabs structures were modeled using the SAP 2015. The area covered in this evaluation is the floor slab-3 column centre J-R, and 2-5. The evaluation show for floor slab case in x-axis span, ignoring deflection of the beam, in response to 400 - 500 kg/m2 live load is considered to be safe (OK), 600 kg/m2 live load is considered to be critical, 700 kg/m2 live load is cosidered to be unsafe (NO-OK). In y-axis span, in response to 400 kg/m2 live load, it is considered safe (OK), 500 kg/m2 live load is considered critical, 600 kg/m2 live load is considered unsafe (NO-OK). All slabs assumed as its sole load without putting beam deflection into equation are considered safe in response to 500 - 600 kg/m2 live load. For main beams case (350x650), bending moment in support section is considered to be safe (OK) in all case of live load ranging from 500 - 800 kg/m2. While bending moment in midspan section, in response to 500-600 kg/m2 live load is considered to be safe (OK), 700 kg/m2 live load is considered to be unsafe (NO-OK).

A Multimodal Discourse Analysis of Political Speeches: The Case of Donald Trump’s 2016 Election Speeches

<p><em>This paper investigates the different verbal and non-verbal meaning making resources manifested in the speeches of Akron, Ohio and Phoenix, Arizona delivered by Donald Trump during his presidential campaign in 2016. The way verbal and non-verbal resources combine or interact intersemiotically unravels how Donald Trump attempts to affect his audience and reveal his populist leadership. For that end, the researcher carried out an analysis that is divided into two sections. Section one is devoted to a ‘themes’ analysis to isolate the overarching themes and illuminate the major topics addressed by President Donald Trump to seek his audience’s support. Section two follows SF-MDA which relies on Halliday’s systemic functional linguistics (Halliday, 1978, 1994; Halliday &amp; Matthiessen, 2004/2014) for the analysis of verbal meaning- making resources and Kress and Van Leeuwen’s visual grammar (1996/2006) for the analysis of non-verbal resources. The analysis reveals that both verbal and non-verbal meaning-making resources, in terms of representational, interactive and compositional meanings, work intersemiotically to deliver a full account of meaning and unravel Donald Trump's populist leadership.</em></p>

Contact grouting taken into account when calculating arched frame supports

One of the current trends in the technology of supporting capital and preparatory workings is the use of contact grouting. The contact grouting is designed to increase the bearing capacity of the frame supports. The paper considers a method for calculating the support pressure and the displacement of the support crown. The calculation method is based on the interaction of the system of blocks “support – filling layer - broken rock layer - undisturbed rock”. The following factors were taken into account in the method of calculating the frame arch support: depth of the roadway development, mine working cross-section, the support section, the width of the filling layer and its deformation characteristics, as well as the deformation and strength characteristics of the rock mass. Checking of the support strength state is done by comparing the calculated load versus the rated bearing capacity of the support. The developed technique allows making the choice of support in various mining conditions of the application.