Miracle-dz/UniFAR-FTUs huggingface dataset:
Metrology of convex-shaped nanoparticles via soft classification machine learning of TEM images

The shape of nanoparticles is a key performance parameter for many applications, ranging from nanophotonics to nanomedicines. However, the unavoidable shape variations, which occur even in precision-controlled laboratory synthesis, can significantly impact on the interpretation and reproducibility of nanoparticle performance. Here we have developed an unsupervised, soft classification machine learning method to perform metrology of convex-shaped nanoparticles from transmission electron microscopy images. Unlike the existing methods, which are based on hard classification, soft classification provides significantly greater flexibility in being able to classify both distinct shapes, as well as non-distinct shapes where hard classification fails to provide meaningful results. We demonstrate the robustness of our method on a range of nanoparticle systems, from laboratory-scale to mass-produced synthesis. Our results establish that the method can provide quantitative, accurate, and meaningful metrology of nanoparticle ensembles, even for ensembles entailing a continuum of (possibly irregular) shapes. Such information is critical for achieving particle synthesis control, and, more importantly, for gaining deeper understanding of shape-dependent nanoscale phenomena. Lastly, we also present a method, which we coin the “binary DoG”, which achieves significant progress on the challenging problem of identifying the shapes of aggregated nanoparticles.
A Measurement Method of the Interoperability of Integrated Systems Based on Process Net

Interoperability is the key target of integrated architecture design, as well as the basis of the capability of integrated systems. Since interoperability plays an important role in fulfilling operational missions, this study proposes a quantification measurement method for the interoperability at architecture level by matching the missions with the initial conditions of executable model—Petri Net. First, the process net of the Petri net model is used to present the interoperation relationship between systems. Then the quality attribute for interoperation is assigned by incident matrix of system interoperation to accomplish the measurement on the interoperability of a heterogeneous set of integrated systems. Finally, the National Missile Defense System is taken as an example to illustrate the application of this method.
Adapting the Lean Enterprise Self Assessment Tool for health care

The Lean Enterprise Self Assessment Tool (LESAT) is a product of the Lean Advancement Initiative (LAI) and the Massachusetts Institute of Technology. This tool has been applied by many organizations to gage their progress toward lean enterprise management, however applying this tool in health care organizations has been inhibited by language and underlying assumptions from product manufacturing. An adaptation of the LESAT specifically for health care is proposed. Review of the literature and special reports on health care are used in determining the recommended changes. "Product life cycle" is reinterpreted as a health care service cycle and context specific enterprise level processes and practices are presented. Comparison to other industry measures shows the content the LESAT for health care to cover all key issues and practices for high quality health care delivery. Thesis Advisor: Deborah Nightingale Title: Professor of the Practice, Aeronautics & Astronautics and Engineering Systems This page is intentionally left blank.
Nondestructive Testing and Evaluation Methods for Rail Welds in Japan

In Japan, four types of welding methods, that is, flash welding, gas pressure welding, enclosed arc welding and thermite welding are applied to rail welding. All welds are inspected by nondestructive inspection right after welding in order to assure the reliability of rail welds. However, rail weld failures, which are initiated from weld discontinuities, rarely occur. It is thought that welds performed by fusion welding such as enclosed arc and thermite welding have less reliability than those by flash and gas pressure welding, because some weld discontinuities are easily generated. In this paper, the features of rail weld failures and the inspection methods for rail welds in Japan are introduced. Moreover, the improvements of the ultrasonic inspection method for preventing rail weld failures are discussed. Consequently, the double-probe technique of ultrasonic inspection method is suitable to detect discontinuities in rail welds. The relationship between weld quality and property, such as rupture load and fatigue strength, is clarified by applying this method to rail fusion welds. Rail weld failures have gradually decreased since the adoption of this inspection method to fusion welds.
MODERNISASI HUKUM NOTARIS MASA DEPAN: KAJIAN HUKUM TERHADAP KEMUNGKINAN CYBER NOTARY DI INDONESIA

Abstrak Untuk mencegah penipuan (fraud) tengah berkembang penggunaan suatu metode otentikasi secara elektronik (electronic authentication) yang terwujud dalam teknologi Tanda Tangan Elektronik dan Sertifikat Elektronik. ("SE") sebagai sistem pengamanan transaksi yang dilakukan melalui sistem komunikasi elektronik. Demi efektifitasnya tujuan itu, telah banyak negara memberdayakan fimgsi dan peran Notaris dalam mendukung dan memfasilitasi suatu transaksi elektronik (Cybernotary), tidak hanya sebagai pihak pengemban amanat kepercayaan (Trusted Third Party, "T3P") melainkan juga sebagai pihak yang menjadi penyedia jasa kenotariatan itu sendiri secara elektronik (electronic notary). Dalam peran yang paling minim, Notaris hanya sebagai pihak yang melakllkan verifikasi dan legalisasi identitas hukum seseorang (Registration Authorities) sebelum yang bersangkutan diberikan Sertifikat Elektronik dari suatu Penyelenggara Sertifikat Elektronik ("PSE"). Sementara, dalam peran yang paling maksimal, justru Notaris itu sendiri yang menjadi pihak yang menyelenggarakan jasanya secara elektronik. Banyak negara sudah menerapkannya, tidak hanya bagi negara yang mewarisi sistem hukum Common Law melainkan juga Civil Law, bahkan dalam forum internasional kedua model Notaris yang berbeda tersebut tengah mengembangkan titik temunya demi perdagangan internasional dalam wadah electronic-apostilles. Penelitian kwalitatif terhadap hukum normatif yang bersifat analitis-prekriptif ini, mengkaji pemberdayaan fungsi dan peran Notaris dalam suatu transaksi elektronik yang didukung oleh keberadaan sistem PSE dengan melakukan komparatif, dan kemudian mencari solusi terhadap berbagai hambatan yang dihadapi agar hal tersebut dapat diterapkan di Indonesia. Sesuai karakteristik sis tern hukum nasional, dalam jangka pendek Notaris dapat berperan sebagai pendukung jasa penyelenggaraan sertifikasi elektronik (RA) dan dalam jangka Notaris dapat menjadi sub-penyelenggaraan jasa sertifikasi elektronik itu sendiri (sub-Certification Authority). Dalam jangka panjang, terbuka kesempatan bagi Notaris untuk menyelenggarakan jasa notarisnya secara elektronik, termasuk pembuatan akta otentiknya secara elektronik, sebagaimana yang telah dilakukan oleh Perancis dan Amerika Serikat
Design of a simple three-element quasi-Yagi antenna with a broad impedance bandwidth up to 2.4 : 1

This paper introduces a method for designing a broadband three-element quasi-Yagi antenna (QYA) with a simple geometry and compact size. The proposed QYA consists of simple strip-type elements with unequal widths and distances between them to obtain the desired performance. The proposed QYA fed by a microstrip (MS) line is compact because it has an MS line-to-coplanar strip (CPS) line transition integrated on the CPS line, without requiring additional space for the transition. When a rectangular patch-type director is placed close to the driver dipole fed by a CPS line, the antenna becomes a triple resonance structure, and the impedance bandwidth is extensively increased up to 2.4 : 1 (82.3%) for a VSWR < 2. An example design for a QYA with a gain >4 dBi and a frequency band of 1.6–3.6 GHz is presented. The optimized antenna is fabricated on an FR4 substrate with dimensions of 90 mm × 90 mm and is tested experimentally. The results demonstrate an impedance bandwidth of 2.4 : 1 (1.56–3.74 GHz, 82.3%) for a VSWR < 2, a realized gain of >4 dBi, a cross-polarization level of <−21 dB, and a front-to-back ratio of >13.6 dB within the bandwidth.
Exoskeleton Finger Rehabilitation Robot Dynamics Simulation Analysis

In this paper, an exoskeleton mechanical finger for rehabilitation has been designed. It has two finger knuckles which are driven by two cylinders separately. In the simulation process of ADAMS, the two cylinder driving stems are set different movement speeds and then the two finger-knuckles can be tracked as specific trajectories. The joint force and the torque curve of the exoskeleton mechanical finger at the point of the two knuckles can be got at different cylinder driving speeds.
Activated Carbon in Environment Pollution Abatement Based on Microwave Catalysis Technology

The application of microwave catalysis technology in environment pollution abatement has developed fast in recent years. This paper will primarily introduce the fundamental of microwave catalysis reaction, microwave induced reduction of SO2 and NOx and acid gas pollutants abatement, microwave induced oxidation and organic pollutants removal, microwave induced catalytic reduction and photosynthesis simulation and other technological methods closely related with environment pollution abatement.
A CMOS switch-capacitor 14-bit 100 Msps pipeline ADC with over 90 dB SFDR

This article presents a design of 14-bit 100 Msamples/s pipelined analog-to-digital converter (ADC) implemented in 0.18 µm CMOS. A charge-sharing correction (CSC) is proposed to remove the input-dependent charge-injection, along with a floating-well bulk-driven technique, a fast-settling reference generator and a low-jitter clock circuit, guaranteeing the high dynamic performance of the ADC. A scheme of background calibration minimises the error due to the capacitor mismatch and opamp non-ideality, ensuring the overall linearity. The measured results show that the prototype ADC achieves spurious-free dynamic range (SFDR) of 91 dB, signal-to-noise-and-distortion ratio (SNDR) of 73.1 dB, differential nonlinearity (DNL) of +0.61/−0.57 LSB and integrated nonlinearity (INL) of +1.1/−1.0 LSB at 30 MHz input and maintains over 78 dB SFDR and 65 dB SNDR up to 425 MHz, consuming 223 mW totally.
Organisational resilience capacity and firm product innovativeness and performance

The term resilience has attracted the attention of many researchers from a variety of disciplines; however, an organisation’s resilience capacity has rarely been addressed in the new product development literature. In this study, we empirically tested the role of organisational resilience capacity-related variables on firm product innovativeness and performance. By studying 112 firms, we found that competence orientation and original/unscripted agility are positively related to firm product innovativeness. We also found that with increasing levels of technological turbulence, original/unscripted agility, practical habits and behavioural preparedness are positively associated with product innovativeness, whereas competency orientation is negatively related. Furthermore, we found that product innovativeness mediates the relationship between resilience capacity and firm performance.
Polygon: a QUIC-based CDN server selection system supporting multiple resource demands

CDN is a critical Internet infrastructure that helps Internet users get contents with a short delay. With the development of CDN application scenarios, CDN requests will involve more than one resource type. Unfortunately, the existing CDN server selection schemes targeting one resource type cannot select the most suitable CDN server by considering different resource types together. In this paper, we propose Polygon, a CDN server selection system supporting multiple resource demands. The keystone of Polygon is the deployment of a set of dispatchers at strategic network locations, which can be accessed via anycast. The dispatchers are responsible for resource status collection, server assignment with resource demands, and forwarding requests to suitable CDN servers. Meanwhile, Polygon adopts the 0-RTT and connection migration features of the QUIC protocol to mitigate the extra delay for connection and forwarding. We conduct real-world experiments on the Google Cloud Platform to demonstrate the advantages of Polygon. The results show that the deployment of the dispatchers enables Polygon to provide a better CDN service with a median job completion time reduction of up to 54.8%. Also, Polygon improves resource utilization efficiency by 13% in terms of bandwidth and by 7% in terms of CPU.
Angled grating high-power semiconductor lasers: simulation of beam characteristics under thermal effects

The angled grating laser has been successful in achieving high-power diffraction-limited beams. The laser cavity utilizes a grating inclined at an angle to the facet to filter out the filamented beams. As a result, all of the filamented beams except the primary beam will be transmitted through the grating. In this paper we present the cavity resonance equation, and study temperature sensitivity of this device.
Death March: The Complete Software Developer's Guide to Surviving Mission Impossible Projects

From the Publisher: The complete software developer's guide to surviving projects that are "doomed to fail. " In the course of a career, practically every software developer and manager will encounter projects with outrageous staffing, scheduling, budgeting, or feature constraints: projects that seem destined to fail. In the wake of re-engineering, such "Death March" projects have become a way of life in many organizations. Surviving projects that are "doomed to fail"! Negotiating the best deal up-front. Managing people and setting priorities. Choosing tools and technologies. When it's time to walk away. Now, best-selling author Edward Yourdon brings his unique technology and management insights to the worst IS projects, showing how to maximize your chances of success--and, if nothing else, how to make sure your career survives them. Yourdon walks step-by-step through the entire project life cycle, showing both managers and developers how to deal with the politics of "Death March" projects--and how to make the most of the available resources, including people, tools, processes, and technology. Learn how to negotiate for the flexibility you need, how to set priorities that make sense--and when to simply walk away. Discover how to recognize the tell-tale signs of a "Death March" project--or an organization that breeds them. If you've ever been asked to do the impossible, Death March is the book you've been waiting for.
Estimation of the air entrainment characteristics of a transient high-pressure diesel spray

Abstract The air entrainment characteristics of a transient high-pressure diesel spray were investigated with respect to time and location for injection pressures (Pinj = 76 or 137 MPa) and ambient density (ρa = 15.6 kg/m3) under the non-evaporating condition (303 K). A particle image velocimetry analysis was introduced and some parameters were defined to express air entrainment characteristics. The air entrainment rate increased greatly as the flow moved downstream owing to a larger contact surface area and a recirculating flow. Higher pressure led to a greater entrainment rate with higher effectiveness. The speed (spray tip and front ambient gas) and volume (spray and laterally entrained gas) relations suggested the possibility for the renewal against the lateral-dominant entrainment mechanism.
A subminiature condenser microphone with silicon nitride membrane and silicon back plate

The fabrication process and the properties of a capacitive silicon sensor for the detection of airborne sound are described. The device consists of two chips; one chip carries a 150‐nm‐thick silicon nitride membrane of 0.8×0.8 mm2 , and the second chip represents a complete back plate including the back electrode and the air gap spacer. Both chips are produced by means of an orientation‐dependent etching procedure. The overall dimensions of the transducer are 1.7×2×0.6 mm3 . Measurements of the acoustic properties yield sensitivities between −60 and −90 dB re: 1 V/Pa, depending on the tension of the diaphragm. The most sensitive microphones have a frequency response extending up to 2 kHz, while the less sensitive transducers have higher cutoff frequencies.
E-learning adoption by undergraduate architecture students: facilitators and inhibitors

PurposeThis study identifies the facilitators and inhibitors for the adoption of e-learning for the undergraduate students of architecture. Nine constructs are identified as facilitators and five constructs are identified as inhibitors to the adoption of online learning systems in the context of the study. These constructs were used to propose a research model.Design/methodology/approach596 architecture undergraduates responded to a structured questionnaire. The questionnaire was finalized after a pilot study and included standard scale items drawn from previous studies. An exploratory factor analysis was followed by structural equation modeling (SEM) to test the proposed model.FindingsAll the identified facilitators emerged significant except social influence and price value. Furthermore, technology risk emerged insignificant while all other inhibitors had significant impact on Behavioral Intention to adopt e-learning.Research limitations/implicationsThe study has strong implications in academia as HEIs in developing countries need to make their students computer proficient, boost the implications of e-learning services by mitigating risks and motivating students to acquire knowledge through flexible e-learning modules.Originality/valueThe COVID-19 pandemic forced educational institutions to switch to online modes of learning. For students of architectural programs in a developing country like India, this has been unprecedented and has brought in a new set of challenges and opportunities. With the extension of the pandemic induced lockdown in educational institutions, students – and other stakeholders – have no choice but to adapt to this new normal of dependence on remote learning.
Capacitance requirements for three phase self-excited reluctance generators

A direct method to find the capacitance requirements for a three phase self-excited reluctance generator under any load or speed is introduced. Expressions for the load angle as well as for the minimum value of the excitation capacitance are derived. It has been found that there is a cut off speed, above which no excitation is possible no matter what the terminal capacitance value. Expressions for the value of this speed under open circuit, resistive and pure inductive loads are also derived and presented.
Trajectory control and its application to approach a target: Part II. Target approach experiments

A positioning method using a simple laser sensor was developed and employed for navigation to a target. The laser sensor scans existing reflectors and measures their directions and positions using a triangulation method. After calibration, the accuracy of distance measurement was around 10 cm. A control system that steers an autonomous vehicle following a human-operated tractor was also developed. Experiments regarding the application of the laser sensor confirmed that an experimental autonomous tractor could follow a leading human-operated tractor without collision. However, the autonomous tractor tended to take shortcuts due to feedback. Automatic fertilizer refilling experiments were conducted using an autonomous vehicle equipped with a broadcast fertilizer distributor. The laser positioning method was used to locate the fertilizer supplier. Results of the field experiment showed that the trajectory control algorithm proposed in Part I could guide the vehicle with satisfactory accuracy for refilling. The main factor contributing to navigation error was the limit of the steering angle of the front wheels.
Introducing Human-Centered Design Early in the Engineering Curriculum

This paper focuses on the development and implementation of a cross-disciplinary, project-driven course on human-centered design. The sophomore-level course is required of all students in the industrial engineering major. The course prerequisites are a part of the college-wide freshman engineering curriculum, enabling students in other engineering majors to take the course as well. The primary objective of this course is to introduce the product development process and human-centered methodologies for designing engineering systems into the engineering curriculum. Additional objectives are to: • Let the students experience the product development process through a semester-long, real-world design project. • Prepare students to work with other specialists in the kind of cross-functional design teams employed in engineering practice. • Educate students to focus early and continually on the customers and users of their products. • Use a variety of writing and speaking activities to achieve active participation in the educational process, team building, and a class environment dedicated to professional success. • Enhance retention of engineering students by emphasizing collaborative learning and the product development process early in the curriculum.
A statistical method for predicting the net harmonic currents generated by a concentration of electric vehicle battery chargers

This paper presents a method for predicting the net harmonic currents produced by a large number of electric vehicle (EV) battery chargers. The problem is stochastically formulated in order to account for randomness in individual charger start-time and battery state-of-charge. The authors introduce a model that allows for partial harmonics cancellation due to diversity in magnitudes and phase angles. A general solution technique is presented along with an example using data from a commercially available EV charger. Their results show that a limiting distribution of 7-10 chargers is adequate for accurately predicting harmonic injection currents using the central limit theorem. They also show that the expected values of net harmonic currents are considerably less than the peak values that would have been realized if the same number of chargers were operated in unison.
Simulations of propeller/airframe interference effects using an Euler correction method

An Euler correction method has been used to study propeller effects in airframe-integration studies. In the present method, the propeller is modeled by an actuator disk with proper jump conditions prescribed along the disk. The rotational flowfield behind the propeller is analyzed using the Clebsch formulation of the Euler equations, while the remaining irrotatiohal flowfield is determined with the full-potential method. This method has been successfully implemented into existing axisymmetric nacelle and aft-fuselage/pylon/nacelle codes to study power effects in the presence of a counter-rotating propfan of the pusher type. In the subsonic flow regime where the effect of power is prominent, comparisons of the results obtained using the present method against those of the panel method and experimental data suggest that this simple method is adequate. In the transonic flow regime, calculations indicate that power effects can increase wave drag and trigger earlier shock-induced flow separation.
Measurement of electric-field distribution in n-hexane using an optical probe

A modified polarimeter suitable for measuring very small ellipticities in polarised light is used, by virtue of the Kerr effect, to derive the voltage distribution in electrically stressed n-hexane. An unexpected oscillation was found to occur, although the integral of the time-average stress across the gap was within 5% of the applied voltage.