Miracle-dz/UniFAR-FTUs huggingface dataset:
Fabrication and characterization of nanofluidic channels for studying molecular dynamics in confined environments

Hindered transport of macromolecules in liquid-filled pores is important to biological membrane processes associated with cell biology and medical physiology, chromatography, separation, and heterogeneous catalysis [1]. It is highly desirable to conduct well-controlled, model-based studies of molecular and fluidic transport process in a confined space. Compared to nanoporous track-etched membranes, micromachined nanofluidic structures offer unique advantages, including wellcontrolled physical and chemical properties, compatibility with various single molecule detection (SMD) methods, and easy integration to μTAS [2]. We characterized glass-glass and glass-Si bonding processes for the fabrication of nanofluidic channels as thin as 20 nm (Figure 1). We demonstrated that glass-glass nanofluidic channels as thin as 25 nm, with a high aspect ratio of 2000 (width to depth), can be achieved with this glass-glass bonding technique. We also found that siliconglass nanofluidic channels, as thin as 20 nm, with an aspect ratio of 250, can be reliably obtained with the anodic bonding technique. Cross-sectional scanning electron microscopy (SEM) analysis after bonding was performed to prove that there is no significant change in the depth of the nanofluidic channels due to anodic bonding and glass-glass fusion bonding processes [3]. We examined the conformation and diffusion of a single λ-DNA molecule confined in a slit glass nanochannel using epifluorescence video microscopy (Figure 2(A)) [4]. The diffusivity is characterized as a function of the degree of chain confinement (depth of the channel). In addition, the effects of spatial confinement and surface boundary layer on the diffusivity of small biomolecules within a nanochannel are being investigated by two-photon fluorescence correlation spectroscopy (FCS), shown in Figure 2(B). The potential impact of this research would be significant, both scientifically and technologically, by offering a better understanding of molecular diffusion and transport in confined environments, as well as generating new concepts of molecular sorting and manipulation technology.
The Impact of Bioaugmentation on the Performance and Microbial Community Dynamics of an Industrial-Scale Activated Sludge Sequencing Batch Reactor under Various Loading Shocks of Heavy Oil Refinery Wastewater

The stable and efficient operation of the activated sludge sequencing batch reactor (ASSBR) in heavy oil refineries has become an urgent necessity in wastewater biotreatment. Hence, we constructed a green and efficient solid bioaugmentation agent (SBA) to enhance the resistance of the reactor to loading shock. The impact of bioaugmentation on the performance and microbial community dynamics under three patterns of heavy oil refinery wastewater (HORW) loading shock (higher COD, higher toxicity, and higher flow rate) was investigated on an industrial-scale ASSBR. Results showed that the optimal SBA formulation was a ratio and addition of mixed bacteria Bacillus subtillis and Brucella sp. , of 3:1 and 3.0%, respectively, and a glucose concentration of 5.0 mg/L. The shock resistance of ASSBR was gradually enhanced and normal performance was restored within 6–7 days by the addition of 0.2% SBA. Additionally, the removal efficiency of chemical oxygen demand and total nitrogen reached 86% and 55%, respectively. Furthermore, we found that Burkholderiaceae (12.9%) was replaced by Pseudomonadaceae (17.1%) in wastewater, and Lachnospiraceae (25.4%) in activated sludge was replaced by Prevotellaceae (35.3%), indicating that the impact of different shocks effectively accelerated the evolution of microbial communities and formed their own unique dominant bacterial families.
The Effect of Turbulence Ingestion on Propeller Broadband Thrust

This paper presents the theoretical prediction of the low frequency unsteady broadband forces for propellers in a turbulent flow, such as those on any surface ship. Broadband forces are predicted by the use of a new correlation method and are compared with existing theoretical models based on both correlation and spectrum approaches. In contrast to the available theories, the new theory predicts low blade rate humps and broadband forces simultaneously. For a homogeneous and isotropic turbulent inflow and for a given advance coefficient, turbulence length scale and turbulence level, the present theory produces an unsteady broadband thrust level which is proportional in the high frequency region to the third power of ship speed. At low frequencies, predictions of propeller unsteady thrust spectra show peaks near the first and second blade rate frequencies and those peaks skew to the higher frequency side of the blade rate frequencies. Side forces demonstrate the same phenomena but at a lower level. The physics of the phenomena are discussed and numerical results are compared with limited experimental data.
How Fast Is the Distance between Earth and the Sun Changing in the Solar System?

This paper aims to investigate the rate of expansion and extraction within the solar system. We carried out the Solar system expansion calculations to do such a review. The Universe is expected to look the same from every point in it. After the big bang, Universe is expanding at some speed. Astrophysicists have been in a race to measure precisely how fast the Universe is expanding since Hubble announced that galaxies were systematically moving away from Milky Way Galaxy with a current speed in 1929. Hubble’s observations came after Einstein’s general relativity, which inspired the big bang theory. According to the Big Bang theory, the Universe has created billions of years ago with an explosion and started to expand until today. The expansion of the Universe mostly happens in vast spaces, so clusters of galaxies move away from each other. For example, raising bread during baking will expand, but the raisings will stay the same size while moving each other to expand the bread. Observers have proven that an object (galaxies, a cluster of planets) held together by gravity has a patch of nonexpanding space produced by a gravitational field. However, some observers claimed the solar system is not expanding, while others claimed it is expanding. Does our solar system expand in an expanding Universe? The cosmological expansion of local systems is reviewed in the modern cosmological models. We showed answers related to this question with the help of literature. This review article revisited the proof of the Solar System’s expansion and its speed with about 0.32 nm/s in an expanding Universe.
Creativity, innovation and the ‘New’ MBA : China and the 21st century knowledge economy

This paper discusses the development of new models of business education in contemporary China. It describes the rise of the Masters of Business Administration (MBA) degree in the context of the growth of a new professional-managerial class in China, as a corollary of modernisation and economic reform. While the Masters of Business Administration (MBA) has its origins in the United States, it has grown into a globally recognized qualification for business status, particularly when acquired from ‘elite’ institutions in a highly competitive and extensively ranked global system. Its growth in Asia is reflective of the significant shortages of managerial expertise as economic success throws traditional family-based or state capitalist models of business organization into question. In China, the rise of the MBA has been more recent, although the original idea was introduced in the late 1970s, not long after the directive of Deng Xiaoping to modernise the economy. We consider the role played by new MBA programs, such as the Executive MBA (EMBA) and the International MBA (IMBA) as new educational products designed, not so much for the re-engineering of management practices in SOEs along more effective commercial lines, but rather upon developing an internationally networked business elite better able to engage with the new challenges of the global knowledge economy.
Short term load forecasting for Iran national power system using artificial neural network and fuzzy expert system

One of the requirements for the operation and planning activities of an electrical utility is the prediction of load for the next hour to several days out, known as short term load forecasting (STLF). This paper presents the STLF of the Iranian national power system (INPS) using artificial neural networks (ANN) and fuzzy expert systems (FES). The ANN is trained with the load patterns corresponding to the forecasting hours and the forecasted load is obtained. The FES modifies the initial forecasted load for the special holidays and also in the case sudden changes in temperature. A data analyser and a temperature forecaster are also included in the NRI STLF (NSTLF) package. The program has satisfactory results for one hour up to a week prediction of INPS load.
PSYCHOLOGICAL REGULATION IN THE TEACHING OF PIANO PERFORMANCE

The stability of the piano player’s psychology is a defining factor of the performance effect. To regulate the psychology of piano players, this paper sums up the positive and negative psychological features that might occur in piano performance. Then, a survey was conducted among 50 first-grade piano majors to identify the distribution of the psychological features, and analyze the reasons for these features to emerge. On this basis, a psychological regulation method was developed and applied to the selected subjects. Finally, the subjects were compared in psychological changes of the early, middle and later stages and in their performance levels. The results show that the subjects were biased to negative psychological features before psychological regulation; In the middle and late stage, the subjects witnessed improvement in both psychological stability and performance level, suggesting that our regulation method applies to the teaching of piano performance. The research provides clues to teaching practice of piano teachers.
New Digraph Models for Diagnosis of Electric Cables

This paper proposes a new systematic approach to model the electric cables failure detection, in order to design a supervisory system which prevents human errors. To demonstrate this, we apply it to railway electric cable systems.Ill. 6, bibl. 9 (in English; summaries in English, Russian and Lithuanian).
Enhanced performance of a 60-GHz power amplifier by using slow-wave transmission lines in 40 nm CMOS technology

This paper shows the contribution of slow-wave coplanar waveguides on the performance of power amplifiers operating at millimeter-wave frequencies in CMOS-integrated technologies. These transmission lines present a quality factor Q two to three times higher than that of the conventional microstrip lines at the same characteristic impedance. To demonstrate the contribution of the slow-wave transmission lines on integrated millimeter-wave amplifiers performance, two Class-A single-stage power amplifiers (PA) operating at 60 GHz were designed in standard 40 nm CMOS technology. One of the power amplifiers incorporates only the microstrip lines, whereas slow-wave coplanar transmission lines are considered in the other one. Both amplifiers are biased in Class-A operation, drawing, respectively, 22 and 23 mA from 1.2 V supply. Compared to the power amplifier using conventional microstrip transmission lines, the one implemented with slow-wave transmission lines shows improved performances in terms of gain (5.6 dB against 3.3 dB), 1 dB output compression point (OCP1dB: 7 dBm against 5 dBm), saturated output power (Psat: >10 and 8 dBm, respectively), power-added efficiency (PAE: 16% instead of 6%), and die area without pads (Sdie: 0.059 mm2 against 0.069 mm2).
Switching-based emergency braking control for an overhead crane system

Emergency braking plays an important role in the safety of overhead crane systems; however, it has received little attention so far. Motivated by this fact, two practical guidelines for the emergency braking control of overhead crane systems are proposed, which are safety and efficiency in brief. Based on the guidelines, a novel two-stage switching control strategy is then presented to improve operation safety. Specifically, at the first stage, a braking controller is exerted on the trolley to prevent the payload from moving forward as soon as possible. At the second stage, an energy-based damping controller is adopted to stabilise the overall system rapidly. These two controllers are switched automatically and the switching time is selected carefully to ensure satisfactory control performance. Both simulation and experimental results are presented to demonstrate the effectiveness of the proposed braking control method.
Strength Analysis of Concrete Containing Crushed Rock Particles AS Partial and Total Replacement of Sand

In recent past, the demand for natural river sand has rapidly increased for constructional purposes. This high demand led to extraction of sand from river beds. Depletion of natural sand creates the environmental issues and hence sand excavating is restricted by government which resulted in shortage and substantial increase in its cost. In this context, there is a need to recognize reasonable elective material from mechanical waste instead of stream sand. The usage of squashed shake sand which is a waste material has been acknowledged as building material in numerous nations for as long as three decades. In this paper, attempt is being made to replace natural river sand partially and completely with stone dust. The cube compressive strength test and split tensile tests were conducted. Experimental investigations have revealed that the mechanical properties of concrete using stone dust are almost similar to the conventional concrete. Hence the detrimental effects on environment caused due to excessive mining of river sand can be minimized.
BuNGee project overview

The BuNGee FP7 project is looking at achieving throughput densities substantially higher than available with today‘s systems. The project addresses this goal by a combination of techniques: below-rooftop access base stations and a unique feeding architecture using a combination of licensed in-band and out-of-band license exempt spectrum. Very high capacity feeding hubs with high-order spatial reuse are created using multi-beam antennas and advanced MIMO techniques, using millimeter waves.
A reconstruction technique for stimulated Brillouin scattering fiber-optic sensors for simultaneous measurement of temperature and strain

A novel approach for simultaneous temperature and strain profiles reconstruction, based on Brillouin optical-fiber time-domain analysis (BOTDA) sensors, is proposed. In this approach, the unknown profiles are expanded in base harmonic functions, while evaluating their coefficients by means of a multidimensional minimization. In order to discriminate between strain and temperature effects on Brillouin frequency changes, a suitable deployment of the fiber acting as a sensor is supposed, so as half of its sensing length is subject to the influence of variations in both strain and temperature, whereas the other half is isolated from the effects of mechanical strain. Numerical simulations, even in presence of noise, have proved the capability of the proposed algorithm to compensate for some systematic errors suffered by classical approaches based on the direct reading of Brillouin power spectra.
Doing the Right Thing? HRM and the Angry Knowledge Worker

This paper explores the relationship between human resource (HR) practices, commitment, work and employment relations. Drawing on an in‐depth ethnography of knowledge workers within a global, high‐technology, knowledge‐intensive firm, the paper offers a multidimensional understanding of structures of influence and of commitment that interact in distinctive ways to shape the employee experience. In examining the context and content of ‘best practice’ HR in a ‘celebrated’, leading‐edge company, we have offered a more complex, grounded picture of the intent and outcome of commitment‐seeking policies. The paper demonstrates that, contrary to mainstream and critical scholarship, skilled technical workers in knowledge‐intensive firms can be uncommitted, angry and high performing at the same time.
Progress of automatic drug delivery in anaesthesia—The ‘Rostock assistant system for anaesthesia control (RAN)’

The main goals of general anaesthesia should include (not exclusively) adequate hypnosis, analgesia and maintenance of vital functions. In addition, neuromuscular blockade (NMB) may be needed for a number of surgical procedures. Patient safety and cost reductions via the minimization of drug consumption and the shortening of post‐operative recovery represent some of the main issues and motivations of automation of anaesthesia.
H/sub /spl infin// control for suppressing stick-slip in oil well drillstrings

We show, applying the linear H/sub /spl infin// control design technique, that the suppression of stick-slip oscillations and transient behavior can be largely improved over a PD-like control system currently applied in oil well drilling. Using rough knowledge (e.g. size and induced oscillation frequency) of the friction disturbance, the appropriate choice of dynamic weighting functions can make the closed loop system robust toward the substantial uncertainty in the knowledge of the nonlinear friction. After an introduction to drilling engineering and a description of the drilling system, a condensed analysis of the stick-slip phenomenon in drillstrings and a brief history of control solutions for the drillstring problem are given, and H/sub /spl infin// control solutions for allied systems are described. Then, the general principles of linear H/sub /spl infin// control design are sketched. Subsequently, the H/sub /spl infin// control design technique is applied to design a controller for the system under study. Next, the improved closed-loop behavior toward stick-slip oscillations is shown in simulations and experiments. Conclusions with respect to the results are drawn.
AN INTRODUCTION TO EQUIPMENT COST ESTIMATING

Abstract : There are three basic methods used for cost estimation--the industrial engineering, analogy, and statistical approaches. The statistical method is considered the most useful for government cost analysts, whether the purpose is long-range planning or contract negotiation. An estimating procedure must rely on a data base that includes cost, physical and performance descriptions, and a development and production history of previous equipment programs. Experience has proved the value of the learning-curve concept. Its basis is that each time the total quantity of items produced doubles, the cost per item is reduced to a constant percentage of its previous cost. A thorough knowledge of the learning-curve phenomenon is indispensable to persons involved in cost analysis. (Author)
Tracking and Following Algorithms for Mobile Robots for Service Activities in Dynamic Environments

: Providing robots with the capability of following human targets can allow them to assist people in various ways in different environments. One of the main difficulties in performing human tracking and following is the occlusion problem caused by static and dynamic obstacles. This paper addresses the occlusion problem by planning a robotic trajectory to maximize target visibility and following the moving target. Initially, a laser range finder is used to detect the human target and then robustly track the target using the Kalman filter. Afterward, a human following algorithm based on a look-ahead algorithm, DWA*, is implemented to pursue the target while avoiding static or dynamic obstacles. Extensive experiments were conducted to test to evaluate robot maneuvers and several field tests were conducted in more complex environments such as a student cafeteria, computer center, and university library.
VOFDM Broadband Wireless Transmission and Its Advantages

In this paper we describe a coding, modulation, and spatial processing technique for fixed broadband wireless Internet access applications and provide examples of its performance. This technique is built on Orthogonal Frequency Division Multiplexing (OFDM) and is known as Vector OFDM (VOFDM). We compare VOFDM with conventional Single Carrier Modulation (SCM), and show that it provides substantial performance improvements over SCM. 1. It divides the channel into narrowband, flat fading, subchannels and thus it is more resistant to frequency selective fading as compared to single carrier systems. 2. By using FFT techniques, it is computationally efficient. 3. It can be combined with coding and interleaving to recover symbols lost due to the frequency selectivity of
STUDY OF THE EFFECT OF CHOLESTEROL ADDITION TO THE SHRIMP DIET ON THE GROWTH AND FINISHING OF WHITE INDICUS PRAWN (PENAEUS INDICUS)

Abstract. Population increase, enhancing demand for food, especially the optimal use of marine resources, low levels of production in shrimp farms, lack of planning, and pleasant nutrition in farms, requires that research projects on manual feeding in cultural farms of shrimp take place according to the conditions of each region. Recently, shrimp feeding in the world has been accompanied by various innovations in order to maximize the productivity of both the existing ecosystem and the physiological potential of this aquatic species. Cholesterol is one of the ingredients that, in addition to the urgent need for it to be used in the metabolic system to gain weight, as an essential nutrient, increases the number of molting and as a stimulantion for growth. In this regard, the present research, which is the first manual feeding in the Chah-Bahar region of Iran, evaluates the most appropriate and optimal amount of cholesterol in white indicus prawn (P.indicus) diets. In this research, different levels of artificial cholesterol levels of 0, 0.25, 0.5, 0.75 and 1% of total feed were added to the shrimp feed of Iranian commercially pellets by dissolving in refined and spray soybean oil and then, in a 100 day culturing period in semi-intensive system, the effects of these cholesterol levels were evaluated and investigated. Finally, it was concluded that the addition of 0.5% artificial cholesterol in prawn (shrimp) diet, significantly increased levels of food intake by 0.05 and 0.01 probability level, the final weight gain of each shrimp and the increase in the final harvest of shrimp per unit area by using a completely randomized design (CRD). Also, adding this amount of cholesterol in shrimp dietaries has led to improved survival rate and feed conversion ratio (FCR). Keywords: Aquatic Food Industry, cholesterol, shrimp diet, white indicus prawn (Penaeus indicus)