nils-herrmann/clean_scirepeval huggingface dataset:
The importance of the unit of analysis: Commentary on Beugels et al. (2016) Complications in unilateral versus bilateral deep inferior epigastric artery perforator flap breast reconstructions: A multicentre study.
Venue: Journal of plastic, reconstructive aesthetic surgery JPRAS
Year: 2016

Wade, RG orcid.org/0000 0001 8365 6547, Bland, JM, Wormald, JCR et al. (1 more author) (2016) The importance of the unit of analysis: Commentary on Beugels et al. (2016) Complications in unilateral versus bilateral deep inferior epigastric artery perforator flap breast reconstructions: A multicentre study. Journal of Plastic, Reconstructive and Aesthetic Surgery, 69 (9) pp. 1299 1300. ISSN 1748 6815
IMPLEMENTASI MEDIA MOBILE LEARNING DALAM PEMBELAJARAN DESAIN GRAFIS BAGI SISWA KELAS X MULTIMEDIA 1 DI SMK NU UNGARAN
Year: 2019

Media pembelajaran merupakan salah satu komponen sumber belajar yang penting. Berbagai bentuk dan jenis media pembelajaran yang digunakan oleh guru dapat menjadi sumber ilmu pengetahuan bagi siswa. Semakin meluasnya kemajuan di bidang komunikasi dan teknologi, serta diketemukannya dinamika proses belajar, maka pelaksanaan kegiatan pendidikan dan pengajaran semakin menuntut dan memperoleh media pembelajaran yang bervariasi secara luas. Salah satu media pembelajaran yang menarik digunakan adalah media pembelajaran mobile learning. Guru melaksanakan pembelajaran hanya dengan metode ceramah dan media cetak tidak dapat mewujudkan aktivitas belajar aktif serta menyenangkan oleh siswa. Guru kurang memanfaatkan media dalam proses pembelajaran. Penelitian ini mengambil fokus penelitian mengenai implementasi media mobile learning untuk mata pelajaran desain grafis dengan menggunakan materi dasar dasar desain grafis yang bertujuan mengetahui penggunaan media pembelajaran mobile learning pada siswa kelas X multimedia 1. Penelitian ini menggunakan metode penelitian deskriptif kualitatif. Informan dalam penelitian ini yakni guru mata pelajaran dan siswa kelas X multimedia 1. Hasil penelitian ini menunjukkan bahwa media pembelajaran yang digunakan cukup baik digunakan dalam proses pembelajaran ini. Hal tersebut dapat dilihat dari persentase hasil mendesain siswa yang lebih banyak mendapatkan nilai diatas batas KKM (75) yaitu dari 32 siswa terdapat 22 siwa yang mendapatkan nilai prsaktik mendesain dengan nilai 80 85 bahkan ada yang lebih dari 85. Simpulan dari hasil penelitian ini yaitu media pembelajaran mobile leaning sangat bermanfaat digunakan dalam pembelajaran desain grafis. Harapan peneliti untuk SMK NU Ungaran guru sebagai fasilitator hendaknya guru harus bisa mengkondisikan siswanya saat proses pembelajaran agar siswa bisa memahami materi yang disampaikan dan meluangkan waktu untuk mempelajari pembuatan media pembelajaran agar mampu menciptakan pembelajaran yang efektif dan inovatif. Pemilihan media pembelajaran yang menarik bisa meningkatkan semangat belajar siswa.
Testing the Consensus Model: relationships among physics teachers' professional knowledge, interconnectedness of content structure and student achievement
Year: 2019

The structure and definition of professional knowledge is a continuing focus of science education research. In 2012, a pedagogical content knowledge (PCK) summit was held and it suggested a model of professional knowledge and skill including PCK, which was later often called the Consensus Model (Gess Newsome, 2015. A model of teacher professional knowledge and skill including PCK: Results of the thinking from the PCK summit. In A. Berry, P. J. Friedrichsen, J. Loughran (Eds. Teaching and learning in science series. Re examining pedagogical content knowledge in science education (1st ed. pp. 28 42) New York, NY: Routledge) The Consensus Model proposes a potential powerful framework for the relations among teachers' different professional knowledge bases, but to date it has neither been investigated empirically nor systematically. In this study, we investigated the relationships suggested by the Consensus Model among different aspects of teachers' knowledge and skill. A sample of 35 physics teachers and their classes participated in the investigation; both teachers and their students in these classes took paper and pencil tests. Furthermore, a lesson taught by each of the teachers was videotaped and analysed. The video analysis focused on the interconnectedness of the content structure of the lesson as representation of the in class actions of the teachers. The interconnectedness is understood as a direct result of the application of professional knowledge of the teachers to their teaching. The teachers' knowledge showed no significant influence on the interconnectedness of the lesson content structure. However, the results confirmed the influence of interconnectedness and certain aspects of professional knowledge on students' outcomes. Therefore, interconnectedness of content structure could be verified as one indicator of teachers' instructional quality.
Quantifying the Effect of U sing Kanban vs Scrum A Case Study
Year: 2012

Many claims about the usefulness of various processes or methods, such as Scrum and Kanban, have been stated in agile and lean software communities. However, these claims are rarely supported by objective data or empirical investigations. In contrast, this article aims to demonstrate that the effect of processes or methods (here: Scrum versus Kanban) can be evaluated and compared on the basis of objective data. We analyzed data of more than 12,000 work items collected over the years 2009 2011 in a medium sized software company. The company used Scrum from 2007 to autumn 2010, at which point they changed to Kanban. By using Kanban instead of Scrum, the company almost halved the lead time, reduced the number of weighted bugs by 10% improved productivity by 21% for PBIs, and reduced productivity by 11% for bugs. Consequently, Kanban seems to outperform Scrum in this company. However, the results should be interpreted with caution because the use of Kanban succeeded the use of Scrum. To acquire more knowledge about the performance of different agile or lean methods, scholars should conduct similar studies in different organizations in different application domains and with people of different cultures and competences.
Combining Industry 4.0 with Lean Healthcare to Optimize Operational Performance of Sri Lankan Healthcare Industry
Venue: 2018 International Conference on Production and Operations Management Society (POMS)
Year: 2018

Healthcare is one of the industries that requires the highest quality services for the wellbeing of the society. Today, the demand for healthcare growing rapidly with increasing aging population, rapid urbanization, changing diets, inactive lifestyles and rising obesity levels. The Industry 4.0 technologies and lean techniques can be used to enhance the operational performance of the healthcare supply chain and the patient flow. This paper examines the factors contributing for the inefficiencies in Sri Lankan Healthcare sector and how the operational performance can be optimized through premedical diagnosis of diseases by incorporating Industry 4.0 technologies and lean techniques. Based on a systematic review of literature and feedback of healthcare professionals, the paper identifies the inefficiencies in the current healthcare system. A conceptual framework has been developed by considering the direct impacts from lean management practices and Industry 4.0 technologies on improving operational performance through pre medical diagnosis of diseases.Thus, patients can take preventive actions and be more health conscious while the healthcare providers and other related parties can plan their medical services and supporting services for arising health requirements making the healthcare industry much more efficient.
A Deeper Look at Human Visual Perception of Images
Venue: SN Comput. Sci.
Year: 2020

How would one describe an image? Interesting? Pleasant? Aesthetic? A number of studies have classified images with respect to these attributes. A common approach is to link lower level image features with higher level properties, and train a computational model to perform classification using human annotated ground truth. Although these studies generate algorithms with reasonable prediction performance, they provide few insights into why and how the algorithms work. The current study focuses on how multiple visual factors affect human perception of digital images. We extend an existing dataset with quantitative measures for human perception of 31 image attributes under 6 different viewing conditions: images that are intact, inverted, grayscale, inverted and grayscale, and images showing mainly low or high spatial frequency information. Statistical analyses indicate varying importance of holistic cues, color information, semantics, and saliency on different types of attributes. Building on these insights we build an empirical model of human image perception. Motivated by the empirical model, we designed computational models that predict high level image attributes. Extensive experiments demonstrate that understanding human visual perception helps create better computational models.
Using Weighted Shapley Values to Measure the Systemic Risk of Interconnected Banks
Year: 2018

A macroaEUR prudential approach to financial regulation should reasonably evaluate the systemic risk of individual institutions. We introduce a measure of the systemic risk of interconnected banks using the weighted Shapley value, which characterizes banks' systemic risk by capturing two characteristics: (i) a bank's risk exposure of the primitive asset structure; and (ii) its position in the interbank network. An empirical implementation reveals that the primitive asset structure and interbank connections are main drivers of each bank's systemic risk. In addition, different types of interbank linkages (debt or share) make significant differences in affecting an individual bank's systemic risk.
Pleasure, Arousal, Dominance: Mehrabian and Russell revisited
Year: 2014

This paper presents a discursive review of the dimensions pleasure, arousal and dominance that Mehrabian and Russell developed in 1974 to assess environmental perception, experience, and psychological responses. Since then numerous researchers applied these dimensions to assess the experience of the physical environment and its perceived qualities. Although the dimensions appeared to be useful, there is a long lasting debate going on among environmental psychologists about the interpretation of pleasure, arousal and dominance and its underlying mechanisms. Due to the lack of clarity researchers use different adjectives to describe environmental experiences, which makes any comparison between research findings difficult. This paper shows that the three dimensions can be linked to the current ABC Model of Attitudes: pleasure, arousal and dominance can be respectively related to affective, cognitive and conative responses, i.e. Affect, Cognition and Behaviour (ABC) In addition, connecting the three dimensions to the triad feeling, thinking and acting, can also help to improve our understanding, interpretation and measurement of pleasure, arousal and dominance. Based on this review, it is proposed to re introduce the three dimensions and to replace the nowadays often used two dimensional model with pleasure and arousal by a three dimensional model, including dominance as a third dimension, to represent the complete range of human responses.
Learning Multimodal Representations for Unseen Activities
Venue: 2020 IEEE Winter Conference on Applications of Computer Vision (WACV)
Year: 2020

We present a method to learn a joint multimodal representation space that enables recognition of unseen activities in videos. We first compare the effect of placing various constraints on the embedding space using paired text and video data. We also propose a method to improve the joint embedding space using an adversarial formulation, allowing it to benefit from unpaired text and video data. By using unpaired text data, we show the ability to learn a representation that better captures unseen activities. In addition to testing on publicly available datasets, we introduce a new, large scale text/video dataset. We experimentally confirm that using paired and unpaired data to learn a shared embedding space benefits three difficult tasks (i) zero shot activity classification, (ii) unsupervised activity discovery, and (iii) unseen activity captioning, outperforming the state of the arts.
Financing decisions after partial privatization in China: Can a stock market quotation really provide discipline?
Year: 2014

This paper uses the framework developed by Helwege and Liang (1996) to investigate the post listing financing decisions of 221 Chinese state owned enterprises that were partially privatized via the stock market in 1994 1999. First, we estimate a logit panel data model to examine the decision to raise external funds, either bank loans or equity. Our results show that the probability of raising external finance is positively correlated with the firm's cash shortage, but only if non cash working capital is included in the definition of the deficit. In contrast, firms with a cash surplus are less likely to tap external financial markets. Second, we examine the type of security issued and find that default risk negatively affects the probability of completing a stock offering, while firm level information asymmetries are not significant. Overall, we document some important differences between the firms where the government retained its majority stake and those where it relinquished it; we link these to differences in the firms' governance and access to financial markets.
Environmental Impact Assessment in Green Procurement and Partnering Contracts Looking for environmental performance beyond EIA
Year: 2010

There are several ongoing trends, which will influence the future practice of Environmental Impact Assessment (EIA) in infrastructure development projects: i) Many decisions that influence the design and environmental performance of the project are made after the EIA process has been completed; ii) There is a lack of transfer of information (follow up) from the planning stage to the construction and implementation; iii) The issue of the effectiveness of EIA is EIA delivering the outcomes expected and needed? iv) A trend towards more collaborative relationships between various parties (governmental, private, public) v) Authorities and companies increasingly use procurement and contracting as an environmental policy instrument to further the environmental performance of products and services. However, there has been limited research on the role of how these different trends are influencing practice of EIA and how they can interact with each other in order to achieve more effective EIA. The next three sections will address the five issues mentioned above. Subsequently, the paper discusses how these trends might be combined in order to enhance environmental performance throughout the project life cycle. Finally some conclusions are drawn. This paper aims at exploring how green procurement in relation to public private partnerships could be used in order to deal with some of the problems that previously have been be identified in relation to safeguarding an effective EIA that contributes to environmental sustainable development. The paper provides an introduction to the session devoted to Partnerships and Impact Assessment, and sets the context for further discussion.
Temperature dependence of thermal conductivity of VO2 thin films across metal insulator transition
Year: 2015

Thermal conductivity of a 300 nm thick VO2 thin film and its temperature dependence across the metal insulator phase transition (TMIT) were studied using a pulsed light heating thermoreflectance technique. The VO2 and Mo/VO2/Mo films with a VO2 thickness of 300 nm were prepared on quartz glass substrates: the former was used for the characterization of electrical properties, and the latter was used for the thermal conductivity measurement. The VO2 films were deposited by reactive rf magnetron sputtering using a V2O3 target and an Ar O2 mixture gas at 645 K. The VO2 films consisted of single phase VO2 as confirmed by X ray diffraction and electron beam diffraction. With increased temperature, the electrical resistivity of the VO2 film decreased abruptly from 6.3 x 10 1 to 5.3 x 10 4 O cm across the TMIT of around 325 340 K. The thermal conductivity of the VO2 film increased from 3.6 to 5.4 W m 1 K 1 across the TMIT. This discontinuity and temperature dependence of thermal conductivity can be explained by the phonon heat conduction and the Wiedemann Franz law.
Optimized preparation of activated carbon from coconut shell and municipal sludge
Year: 2020

A low cost and well developed type of activated carbon (AC) was synthesized from coconut shell and municipal sludge via two stage co pyrolysis. It not only reused disposed sewage sludge and agricultural waste, but also turned waste into a porous adsorbent. The optimization of operating variables during the synthetic process was carried out using a single factor experiment. Simultaneously, the preparation conditions and interactions between factors were further optimized with the Box Behnken design (BBD) of response surface methodology (RSM) The optimal conditions were determined as: an activation temperature of 800 degC, an activation time of 60 min, an activator concentration of 2.5 mol/L, a 50% addition of coconut shell, a carbonization temperature of 500 degC, a carbonization time of 45 min, 2.5 mol/L KOH, an impregnation ratio of 1.5:1 and a time of 20 h, under which a iodine value of 698.37 mg/g was achieved. Activation temperature was found to be the most significant factor affecting the iodine value of AC, and there was an interaction between these some factors (activation temperature, activation time and activator concentration) Some characterizations (FT IR, SEM, Boehm's titration and textural test) were also used to measure the physicochemical properties of optimized activated carbon (AC0) The FT IR results indicated that abundant oxygen containing functional groups (C O, O H and C O) were observed on the surface of AC0 with irregular and well developed porosity. These functional groups may have stemmed from carboxylic groups (0.99 mmol/g) lactonic groups (0.45 mmol/g) and phenolic groups (0.79 mmol/g) after co pyrolysis of sludge and coconut shell. The total surface area (680.34 m2/g) and volume (0.73 cm3/g) of AC0 were obviously higher than those of activated carbon from municipal sludge (MSAC) By comparing the adsorption performances, the iodine value of AC0 was found to be superior to that of other carbon adsorbents. These consequences demonstrated that the physicochemical properties of AC employed in the field of adsorbents were improved due to the addition of biomass. The waste disposal method satisfied the demand of the current market and environmental requirements.
A Collaborative Scheme for DFX Techniques in Concurrent Engineering Mitigated with Total Design Activity Model
Venue: Modular and Offsite Construction (MOC) Summit Proceedings
Year: 2019

Industry 4.0 has sparked rapid changes in the manufacturing and construction sectors, leading to a significant shift in how off site factory based panelized construction machines are designed and manufactured. Concurrent engineering which seeks to close the gap between design and manufacturing sectors provides an ideal environment for machine development. It is a systematic methodology to integrate machines holistic concurrent design activities and their related processes. Competition arising in the marketplace for newly developed machines is driving modifications in the way machine designers develop production machines. Thus, to boost the efficiency in concurrent machine development, appropriate evaluation, and decision analysis tools required to be developed and utilized. Currently, there is no DFX selection tool available to aid the designer in concurrent machine design applications. In this paper, these challenges are addressed through a comprehensive qualitative literature review of DFX techniques with their implementation in Stuart Pugh: Total Design Activity Model. Various DFX techniques are mapped and clustered in a collaborative scheme, interactions and links between them are identified, and the relative importance weight of each is calculated. A description of a functional DFX scheme is proposed in this paper that can aid designers in establishing lean design processes for machine development and reveals its potential application in Multi DFX fuzzy multi criteria decision support system.
An Input Process Output Model of Pilot Core Competencies
Year: 2017

The aim of this study was to investigate the relationship between the flight related core competencies for professional airline pilots and to structuralize them as components in a team performance framework. To achieve this, the core competency scores from a total of 2,560 OPC (Operator Proficiency Check) missions were analyzed. A principal component analysis (PCA) of pilots' performance scores across the different competencies was conducted. Four principal components were extracted and a path analysis model was constructed on the basis of these factors. The path analysis utilizing the core competencies extracted adopted an input process output' (IPO) model of team performance related directly to the activities on the flight deck. The results of the PCA and the path analysis strongly supported the proposed IPO model.
Emerging reconfigurable antenna elements for broadband wireless communication systems
Venue: TENCON 2015 2015 IEEE Region 10 Conference
Year: 2015

This paper introduces several emerging reconfigurable antenna elements for modern broadband wireless communication systems. Firstly, we will present a broadband uni directional circular polarization (CP) reconfigurable antenna consisting of four planar monopole radiators and an broadband output phase reconfigurable feeding network. Switchable left handed circular polarization (LHCP) and right handed circular polarization (RHCP) are realized by controlling the rotating direction of the currents (Jm1, Jm2, Jm3 and Jm4) on the four monopoles. Secondly, beside of realizing the polarization switching of uni directional radiation pattern, we designed a broadband omni directional CP reconfigurable antenna with a conical beam pattern. The idea is to combine a broadband center fed monopolar patch working as an electric dipole (E dipole) and eight reconfigurable coupling loop stub radiators as the magnetic dipoles (M dipole) together to generate the reconfigurable CP conical beam radiation. Above two designs have the polarization reconfigurable characteristics. In addition, we also realized a broadband pattern reconfigurable CP antenna by exciting a quadrifilar helical antenna (QHA) with the same reconfigurable feeding network as in the first design. Broadside and backfire CP radiation patterns are switchable by controlling the output phases of the four excitations. These proposed antennas are good candidate for many modern wireless communication systems as navigation and geostationary satellite systems, RFID, or other systems requiring CP radiations.