Quantitative Analysis of Several Influencing Factors on TBM Advance Speed

2012 ◽  
Vol 594-597 ◽  
pp. 1318-1323
Author(s):  
Chao Li ◽  
Joachim Tiedemann ◽  
Hong Wei Zhou
Keyword(s):  
Compressive Strength ◽  
Quantitative Analysis ◽  
Rock Strength ◽  
Thrust Force ◽  
Compressive Test ◽  
Experiment System ◽  
Uniaxial Compressive Test ◽  
Csm Model ◽  
The Relationship ◽  
Advance Speed

Aiming at the problem of a difference between the TBM advance speed estimated by the NTNU and CSM model, and the actual advance speed, a quantitative analysis is carried out in the paper. Combining the experimental results of the uniaxial compressive test with the rock mechanics experiment system TAW-2000 and MTS815, the paper quantitatively characterizes the main parameters including the rock compressive strength, elastic modulus, abrasiveness, and the thrust force of cutterhead, corresponding to TBM advance speed by using the method of quantitative analysis of multi-factors. Moreover, the relationship between the TBM advance speed and the parameters was established. It is indicated that higher rock strength, abrasion and a smaller thrust force of cutterhead are reasons resulting in a lower TBM advance speed.

Influences of Temperature and Time on Concrete Compressive Strength after Water Cooling

2013 ◽  
Vol 639-640 ◽  
pp. 1021-1024
Author(s):  
Wei Zi ◽  
Zhi Wu Yu ◽  
Ya Chuan Kuang
Keyword(s):  
Compressive Strength ◽  
Water Cooling ◽  
Concrete Compressive Strength ◽  
Compressive Test ◽  
Failure Characteristics ◽  
Residual Compressive Strength ◽  
Concrete Failure ◽  
In Fire ◽  
The Relationship ◽  
Temperature Time

The concrete residual compressive strength after different burning temperature and time by water cooling was experimentally studied. A detailed review of experimental phenomena in fire and the concrete failure characteristics in compressive test were given, and the relationship between the compressive strength and temperature, time were discussed. It is found that with the exposure of temperature and time increasing, the concrete residual compressive strength tends to decrease generally, but when the temperature is low or time is short, the concrete residual compressive strength tends to increase on the contrary. According to analysis of the experiment results, the formula for concrete residual compressive strength and temperature-time relationship after the fire was built.

scholarly journals Test Study on Strength and Permeability Properties of Lime-Fly Ash Loess under Freeze-Thaw Cycles

2014 ◽  
Vol 8 (1) ◽  
pp. 172-176
Author(s):  
Zhiquan Zhang ◽  
Yufen Zhang
Keyword(s):  
Compressive Strength ◽  
Shear Strength ◽  
Fly Ash ◽  
Water Stability ◽  
Direct Shear ◽  
Compressive Test ◽  
Freeze Thaw ◽  
Coefficient Of Permeability ◽  
Test Study ◽  
Uniaxial Compressive Test

In order to study the application of lime-fly ash loess in permafrost subgrade engineering, uniaxial compressive test, fast direct shearing test and permeability tests were carried out on lime-fly ash loess under different curing ages and freeze-thaw cycles. Uniaxial compressive strength of lime-fly ash loess increases slowly with the curing ages, and can reach 3.5 Mpa after the curing ages of 90 days (This strength is called 90d strength). 14d strength of lime-fly ash loess has already reached 50% of 90d strength; later strength including 28d strength and 90d strength is basically stable under different freeze-thaw cycles, so lime-fly ash loess has good water stability and freeze-thaw stability. Fast direct shear strength decreases with the number of freeze-thaw cycles without consideration of moisture content; the coefficient of permeability increases with the number of freeze-thaw cycles．All test data show that lime-fly ash loess with good behaviors can be applied in permafrost subgrade engineering.

An evaluation of ECT sample height for small flute board grades and Box Manufacturer’s Certification compliance

TAPPI Journal ◽  
2009 ◽  
Vol 8 (6) ◽  
pp. 24-28
Author(s):  
CORY JAY WILSON ◽  
BENJAMIN FRANK
Keyword(s):  
Compressive Strength ◽  
Compressive Load ◽  
Test Sample ◽  
Test Methods ◽  
Test Method ◽  
Initial Development ◽  
Sample Height ◽  
Relationship Of ◽  
The Relationship ◽  
Corrugated Fiberboard

TAPPI test T811 is the specified method to ascertain ECT relative to box manufacturer’s certification compliance of corrugated fiberboard under Rule 41/ Alternate Item 222. T811 test sample heights were derived from typical board constructions at the time of the test method’s initial development. New, smaller flute sizes have since been developed, and the use of lighter weight boards has become more common. The T811 test method includes sample specifications for typical A-flute, B-flute, and C-flute singlewall (and doublewall and triplewall) structures, but not for newer thinner E-flute or F-flute structures. This research explores the relationship of ECT sample height to measured compressive load, in an effort to determine valid E-flute and F-flute ECT sample heights for use with the T811 method. Through this process, it identifies challenges present in our use of current ECT test methods as a measure of intrinsic compressive strength for smaller flute structures. The data does not support the use of TAPPI T 811 for ECT measurement for E and F flute structures, and demonstrates inconsistencies with current height specifi-cations for some lightweight B flute.

Peranan Whistleblowing Dalam Meningkatkan Integriti Anggota Polis Diraja Malaysia (Pdrm): Kajian Ke Atas Kontinjen Perak

Sains Insani ◽  
2018 ◽  
Vol 2 (1) ◽  
pp. 17-27
Author(s):  
Megat Ayop Megat Arifin ◽  
Abd. Halim Ahmad
Keyword(s):  
Quantitative Analysis ◽  
Demographic Factors ◽  
Positive Perception ◽  
External Threats ◽  
Positive Practices ◽  
The Impact ◽  
The Relationship

Whitsleblowing is one of the positive practices in organizations that are able to raise the level of integrity among the members of an organization. However, the roles of whistleblowing also inevitably invites a response, especially among members of the organization itself. This is because such practices are viewed as one factor that may be detrimental to the organization in addition to revealing the reporter (whistleblower) to some external threats and intimidation of discrimination within the organization. This paper is an attempt to examine the relationship between perceptions of members of the Royal Malaysian Police (RMP) Contingent of Perak through the role of whistleblowing practices to increase the perception of the integrity of the members. Next, identify the purpose of the whistleblowing and its effect on the integrity of the members of the organization. This study used a descriptive quantitative analysis to identify patterns of relationship that exists between the perception of whistleblowing practices with perceptions of increased integrity based on three basic variables of demographic factors, response to whistleblowing and the impact of making the report. The results showed that members of the Perak’s police have a positive perception of whistleblowing practices which are seen to be done in improving the integrity of the members.Keywords: whistleblowing, perception, RMP members, culture, integrity, organization, influence. ABSTRAK: Whitsleblowing merupakan salah satu amalan positif dalam organisasi yang mampu untuk meningkatkan tahap integriti ahli-ahli dalam sesebuah organisasi. Namun begitu, amalan whistleblowing juga turut tidak dapat mengelak daripada mengundang pelbagai respon khususnya dalam kalangan ahli organisasi itu sendiri. Amalan sebegini turut dilihat sebagai salah satu faktor yang boleh memudaratkan organisasi di samping mendedahkan pelapor (whistleblower) kepada beberapa bentuk ancaman ugutan dari luar dan diskriminasi dalam organisasi. Kertas ini merupakan satu upaya untuk melihat perkaitan antara persepsi anggota Polis Diraja Malaysia (PDRM) Kontinjen Perak melalui peranan amalan whistleblowing terhadap persepsi peningkatan integriti anggota. Seterusnya, mengenalpasti maksud whistleblowing dan pengaruhnya terhadap tahap integriti anggota dalam organisasi. Kajian ini menggunakan analisis kuantitatif berbentuk deskriptif bagi mengenalpasti corak hubungan yang wujud antara persepsi terhadap amalan whistleblowing dengan persepsi terhadap peningkatan integriti berdasarkan tiga pembolehubah asas iaitu faktor demografi, tanggapan terhadap whistleblowing dan kesan daripada tindakan membuat laporan. Dapatan kajian menunjukkan bahawa anggota PDRM Perak mempunyai persepsi yang positif terhadap whistleblowing yang mana ianya dilihat perlu dilaksanakan dalam meningkatkan integriti anggota.Kata kunci: whistleblowing, persepsi, amalan, anggota PDRM, budaya, integriti, organisasi, pengaruh.  

scholarly journals Geocomputing, New Technologies and Historical Analysis: Tools for a Changing Planet

Proceedings ◽  
2019 ◽  
Vol 30 (1) ◽  
pp. 9
Author(s):  
Sebastiano Trevisani
Keyword(s):  
Quantitative Analysis ◽  
Philosophy Of Science ◽  
New Technologies ◽  
Historical Analysis ◽  
Holistic Approach ◽  
Research Topic ◽  
The Other ◽  
Historical Records ◽  
The Earth ◽  
The Relationship

Modern Earth Scientists need also to interact with other disciplines, apparently far from the Earth Sciences and Engineering. Disciplines related to history and philosophy of science are emblematic from this perspective. From one side, the quantitative analysis of information extracted from historical records (documents, maps, paintings, etc.) represents an exciting research topic, requiring a truly holistic approach. On the other side, epistemological and philosophy of science considerations on the relationship between geoscience and society in history are of fundamental importance for understanding past, present and future geosphere-anthroposphere interlinked dynamics.

Effects of Elevated Temperatures on the Compressive Strength of HFCC

2011 ◽  
Vol 261-263 ◽  
pp. 416-420 ◽  
Author(s):  
Fu Ping Jia ◽  
Heng Lin Lv ◽  
Yi Bing Sun ◽  
Bu Yu Cao ◽  
Shi Ning Ding
Keyword(s):  
Compressive Strength ◽  
Elevated Temperature ◽  
Fly Ash ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Relative Strength ◽  
Ordinary Concrete ◽  
Residual Compressive Strength ◽  
Fly Ash Concrete ◽  
The Relationship

This paper presents the results of elevated temperatures on the compressive of high fly ash content concrete (HFCC). The specimens were prepared with three different replacements of cement by fly ash 30%, 40% and 50% by mass and the residual compressive strength was tested after exposure to elevated temperature 250, 450, 550 and 650°C and room temperature respectively. The results showed that the compressive strength apparently decreased with the elevated temperature increased. The presence of fly ash was effective for improvement of the relative strength, which was the ratio of residual compressive strength after exposure to elevated temperature and ordinary concrete. The relative compressive strength of fly ash concrete was higher than those of ordinary concrete. Based on the experiments results, the alternating simulation formula to determine the relationship among relative strength, elevated temperature and fly ash replacement is developed by using regression of results, which provides the theoretical basis for the evaluation and repair of HFCC after elevated temperature.

Size Effect on Mechanical Properties of LVL

2014 ◽  
Vol 887-888 ◽  
pp. 824-829
Author(s):  
Qing Fang Lv ◽  
Ji Hong Qin ◽  
Ran Zhu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Size Effect ◽  
Tensile Test ◽  
Compression Test ◽  
Test Results ◽  
Laminated Veneer Lumber ◽  
Object Of Study ◽  
The Relationship

Laminated veneer lumber is taken as an object of study, and use LVL specimens of different sizes for compression test and tensile test. The goal of the experiment is to investigate the size effect on compressive strength and tensile strength as well as the influence of the secondary glued laminated face, which appears in the secondary molding processes. The results show that both compressive strength and tensile strength have the size effect apparently and the existence of the secondary glued laminated face lower the compressive strength of LVL specimens. Afterwards, the relationship between compressive strength and volume along with tensile strength and area are obtained by the test results.

Decreased glucagon binding and glucagon-stimulated lipolysis in adipocytes from streptozotocin-diabetic rats

1989 ◽  
Vol 121 (5) ◽  
pp. 705-713 ◽  
Author(s):  
Nobuyuki Sato ◽  
Minoru Irie ◽  
Hiroshi Kajinuma ◽  
Kazuo Suzuki
Keyword(s):  
Quantitative Analysis ◽  
Cyclic Amp ◽  
Adrenergic Receptors ◽  
Marked Reduction ◽  
Diabetic Rats ◽  
Down Regulation ◽  
Streptozotocin Diabetic Rats ◽  
Β Adrenergic Receptors ◽  
Glucagon Receptors ◽  
The Relationship

Abstract. Adipocytes from streptozotocin-diabetic rats showed a markedly reduced lipolytic response to glucagon concomitant with a 90% or greater decrease in the number of glucagon receptors per cell. In contrast, β-adrenergic receptors assessed by [3H]dihydroalprenolol binding and lipolysis stimulated by isoproterenol, dibutyryl 3′5′-cyclic AMP and 3-isobutyl-1-methylxanthine were reduced by only 10–25% in diabetic rats compared with controls. Furthermore, quantitative analysis of the relationship between the amount of cell-bound glucagon and the hormone-stimulated lipolysis revealed that the function of the remaining 10% of glucagon receptors remained intact in cells from diabetic animals. These findings suggest that the lipolytic cascades, including β-adrenergic receptors, in adipocytes are not greatly impaired by diabetes, and therefore, the unresponsiveness of these cells to glucagon is mostly due to a marked reduction in the number of glucagon receptors, probably as a result of a down-regulation by postprandial hyperglucagonemia.

Persepsi Pengembangan Karir Ditinjau Dari Komitmen Organisasi Pada Karyawan Kontrak

2021 ◽  
Vol 15 (01) ◽  
pp. 21-34
Author(s):  
Zuraida Zuraida
Keyword(s):  
Quantitative Analysis ◽  
Organizational Commitment ◽  
Career Development ◽  
Significant Positive Correlation ◽  
Employee Commitment ◽  
Contract Employees ◽  
Analysis Technique ◽  
Negative Perceptions ◽  
The Relationship

Abstract : Contract employees are employees who work at the company with a certain time limit, and can be dismissed at any time, this affects employees' perceptions of career development at the company and also affects employee commitment to the company. This study aims to examine the relationship between perceptions of career development and organizational commitment for contract employees. Perceptions of career development variables and organizational commitment were measured using a scale. The subjects of this study were 48 contract employees, with the determination of the sample based on accidental sampling. The analysis technique used in this research is quantitative analysis using Karl Pearson's product moment with SPSS version 20 for Windows. Based on the research results, it is known that the perception of career development with organizational commitment on contract employees. There is a significant positive correlation (r.0.813 with sig <0.05) between the variable perceptions of career development and organizational commitment for contract employees, namely 0.000 and the significance value is below / less than 0.05, this means that the higher (positive) the perception of career development, the higher employee commitment to the company and vice versa, the lower (negative) perceptions of employee career development, the lower employee commitment to the company. On the perception of career development has the most categories at low (negative) with a contribution of 50% and organizational commitment at most has a low category with contributions 46%.   Keywords:   Contract Employees, Organizational Commitment, Perceptions of Career Development.   Abstrak : Karyawan kontrak merupakan karyawan yang bekerja di perusahaan dengan batasan waktu tertentu dan sewaktu-waktu dapat diberhentikan, hal ini mempengaruhi persepsi karyawan terhadap pengembangan karirnya pada perusahaan tersebut dan juga mempengaruhi komitmen karyawan pada perusahaannya. Penelitian ini bertujuan untuk menguji hubungan persepsi pengembangan karir terhadap komitmen organisasi pada karyawan kontrak. Variabel persepsi pengembangan karir dan komitmen organisasi diukur dengan menggunakan skala. Subjek penelitian ini berjumlah 48 karyawan kontrak , dengan penentuan sampel berdasarkan accidental sampling. Teknik analisis yang digunakan pada penelitian ini adalah analisis kuantitatif dengan menggunakan product moment karl pearson dengan program SPSS versi 20 for Windows. Berdasarkan hasil penelitian, diketahui bahwa persepsi pengembangan karir dengan komitmen organisasi pada karyawan kontrak, ada korelasi positif yang signifikan (r.0.813 dengan sig < 0.05) antara variabel persepsi pengembangan karir  dengan komitmen organisasi pada karyawan kontrak yaitu 0.000 dan nilai signifikansinya dibawah/lebih kecil 0.05, ini berarti bahwa semakin tinggi (positif) persepsi pengembangan karir maka semakin tinggi komitmen karyawan pada perusahaannya begitu sebaliknya semakin rendah (negatif) persepsi pengembangan karir karyawan maka semakin rendah komitmen karyawan pada perusahaannya. Pada persepsi pengembangan karir memiliki kategori paling banyak pada tingkat rendah (negatif) dengan kontribusi 50% dan komitmen organisasi paling banyak memiliki kategori rendah dengan kontribusi 46%.   Kata Kunci :  Karyawan Kontrak, Komitmen Organisasi, Persepsi Pengembangan Karir 

scholarly journals New Approach to Quantitative Analysis of Two-Component Polymer Systems by Infrared Spectroscopy

1996 ◽  
Vol 50 (6) ◽  
pp. 774-780 ◽  
Author(s):  
K. C. Cole ◽  
Y. Thomas ◽  
E. Pellerin ◽  
M. M. Dumoulin ◽  
R. M. Paroli
Keyword(s):  
Infrared Spectroscopy ◽  
Quantitative Analysis ◽  
Weight Fraction ◽  
Polymer Systems ◽  
Near Ir ◽  
Miscible Blends ◽  
Two Component ◽  
New Treatment ◽  
Two Peaks ◽  
The Relationship

A new treatment is proposed for quantitative analysis of two-component polymer systems by infrared spectroscopy. Like much previous work, it is based on a ratio involving two peaks in the same spectrum. The relationship between such a ratio and the concentration of a given polymer is inherently nonlinear. It is shown that this nonlinearity can be well described by a simple equation derived from the laws of optical transmission. This equation has the form χ1 = m1 + m2 R/(1 + m3 R), where χ1 is the weight fraction of polymer 1, the mi are adjustable coefficients, and the ratio R is equal to Aa/( Aa + Ab). The quantities Aa and Ab are the absorbances (peak heights or areas) at two frequencies a and b of which the first is associated mainly with polymer 1 and the second with polymer 2. This equation has been applied to various peak combinations in spectra of miscible blends of poly(phenylene ether) with polystyrene (both mid-IR and near-IR data) and immiscible blends of polypropylene with polyethylene (mid-IR data). It is shown that the equation is valid in all cases, covering the full concentration range from 0 to 100% even when the peaks used for the analysis involve absorption by both polymers. It is therefore believed to be of broad general usefulness for the analysis of polymer blends and copolymers.

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