bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modeling Asymmetric Volatility Clusters Using Copulas and High Frequency Data
Authors: Ning Cathy , Xu Dinghai , Wirjanto Tony 
Published: May 2021

<p>Volatility clustering is a well-known stylized feature of financial asset returns. In this paper, we investigate the asymmetric pattern of volatility clustering on both the stock and foreign exchange rate markets. To this end, we employ copula-based semi-parametric univariate time-series models that accommodate the clusters of both large and small volatilities in the analysis. Using daily realized volatilities of the individual company stocks, stock indices and foreign exchange rates constructed from high frequency data, we find that volatility clustering is strongly asymmetric in the sense that clusters of large volatilities tend to be much stronger than those of small volatilities. In addition, the asymmetric pattern of volatility clusters continues to be visible even when the clusters are allowed to be changing over time, and the volatility clusters themselves remain persistent even after forty days. Keywords: Volatility clustering, Copulas, Realized volatility, High-frequency data. </p>
Personalized Service Delivery for Young People and Families: A Synthesis Review
Authors: Gharabaghi Kiaras , Stuart Carol 
Published: May 2021

<p>This synthesis project, funded through a MCYS Strategic Research Grant, seeks to provide a foundation for developing a multi-disciplinary and cross-sectoral research approach to exploring ‘personalized service’ within the context of residential treatment services for children and youth. This focus was to include the continuum of pre-referral supports and interventions to post-discharge community and family re-integration and sustainable outcomes. A detailed literature review about current approaches to ‘personalizing services’ in Ontario, Canada, North America, and the United Kingdom was undertaken with an emphasis on identifying the core conceptual and logistical principles that frame approaches to personalized services. The approach was intended to encourage future research that would focus on identifying and testing the evidence supporting or challenging such principles. The literature review was structured around six core themes: </p>
<ul>
<li>The stories and experiences of challenging and successful personalized approaches (satisfaction) as compared to outcomes (client change).</li>
<li>Diversity considerations, including cultural identity, linguistic groups, and gender orientations.</li>
<li>Service outcomes at the client level, at the agency level & at the system level.</li>
<li>Successful tools and protocols for implementing personalized services.</li>
<li>Quality assurance protocols.</li>
<li>Logistical and human resource considerations in service provision. </li>
</ul>
Exploratory Landscape Metrics for Agricultural Sustainability
Authors: de Noronha Vaz Eric , Noronha Teresa , Nijkamp Peter 
Published: May 2021

<p>Socio-economic growth and urban change have been an increasing concern for decision makers in recent decades. The monitoring, mapping and analysis of agricultural land-use change, especially in areas where urban change has been high, is crucial. The collision between traditional economic activities related to agriculture in tourist areas such as the Algarve and current demand for tourism infrastructures in urban regions is also leading to loss of economic activity. This paper uses a combined Geographical Information System approach with CORINE land cover datasets to perform a Shannon’s diversity index quantifying changes in agricultural areas. The paper then expands on the nature of the agricultural changes observed, and offers a multi-temporal assessment by means of landscape metrics in order to understand the shifting land-use patterns for the Algarve in land use planning and regional economic equilibrium: (1) forest regions become transformed into agricultural areas and agricultural areas become urban; (2) areas which are initially agricultural become scattered residential regions created by economic investors; and (3) agricultural land-use changes have a cyclical nature in which – in the course of the economic recession – such dynamic effects brought about a decrease in tourism and focus on traditional sectors. </p>
<p><br></p>
<p>Keywords: agricultural land use change, sustainable agricultural development, landscape metrics, agricultural land loss, Geographical Information Systems </p>
Solving Exchange Rate Puzzles with neither Sticky Prices nor Trade Costs
Authors: Moore Michael J , Roche Maurice J 
Published: May 2021

<p>We present a simple framework in which both the exchange rates disconnect and forward bias puzzles are simultaneously resolved. The flexible-price two-country monetary model is extended to include a consumption externality with habit persistence. Habit persistence is modeled using Campbell Cochrane preferences with „deep‟ habits. By deep habits, we mean habits defined over goods rather than countries. The model is simulated using the artificial economy methodology. It offers a neo-classical explanation of the Meese-Rogoff puzzle and mimics the failure of fundamentals to explain nominal exchange rates in a linear setting. Finally, the model naturally generates the negative slope in the standard forward market regression. </p>
The Role of Metal Components in the Cardiovascular Effects of PM2.5
Authors: Niu Jingping , Liberda Eric , Qu Song , Guo Xinbiao , Li Xiaomei , Zhang Jingjing , Meng Junliang , Yan Bing , Li Nairong , Zhong Mianhua , Ito Kazuhiko , Wildman Rachel , Liu Hong , Chen Lung Chi , Qu Qingshan 
Published: May 2021

<p>Exposure to ambient fine particulate matter (PM2.5) increases risks for cardiovascular disorders (CVD). However, themechanisms and components responsible for the effects are poorly understood. Based on our previous murineexposure studies, a translational pilot study was conducted in female residents of Jinchang and Zhangye, China, totest the hypothesis that specific chemical component of PM2.5 is responsible for PM2.5 associated CVD. Daily ambientand personal exposures to PM2.5 and 35 elements were measured in the two cities. A total of 60 healthy nonsmokingadult women residents were recruited for measurements of inflammation biomarkers. In addition, circulatingendothelial progenitor cells (CEPCs) were also measured in 20 subjects. The ambient levels of PM2.5 werecomparable between Jinchang and Zhangye (47.4 and 54.5μg/m3, respectively). However, the levels of nickel,copper, arsenic, and selenium in Jinchang were 82, 26, 12, and 6 fold higher than Zhangye, respectively. The levelsof C-reactive protein (3.44±3.46 vs. 1.55±1.13), interleukin-6 (1.65±1.17 vs. 1.09±0.60), and vascular endothelialgrowth factor (117.6±217.0 vs. 22.7±21.3) were significantly higher in Jinchang. Furthermore, all phenotypes ofCEPCs were significantly lower in subjects recruited from Jinchang than those from Zhangye. These results suggestthat specific metals may be important components responsible for PM2.5-induced cardiovascular effects and that thereduced capacity of endothelial repair may play a critical role. </p>
Empirical Issues in Lifetime Poverty Measurement
Authors: Hoy Michael , Thompson Brennan Scott , Zheng Buhong 
Published: May 2021

<p>This paper demonstrates the implications of adopting an approach to measuring poverty that takes into account the lifetime experience of individuals rather than simply taking a static or cross-sectional perspective. Our approach follows the theoretical innovations in Hoy and Zheng (2008) which address various aspects of the specific pattern of any poverty spells experienced by an individual as well as a possible retrospective consideration that an individual might have concerning his life experience as a whole. For an individual, our perspective of lifetime poverty is influenced by both the snapshot poverty of each period and the poverty level of the permanent lifetime consumption; it is also influenced by how poverty spells are distributed over the lifetime. Using PSID data for the US, we demonstrate empirically the power of alternative axioms concerning how lifetime poverty should be measured when making pairwise comparisons of individual lifetime profiles of consumption (income) experiences. We also demonstrate the importance of taking a lifetime view of poverty in comparing poverty between groups by use of the classic FGT ‘snapshot’ poverty index in conjunction with period weighting functions that explicitly reflect concerns about the pattern of poverty spells over individuals’ lifetimes. </p>
Examining the influence of treatment preferences on attrition, adherence and outcomes: a protocol for a two-stage
partially randomized trial
Authors: Sidani Souraya , Fox Mary , Streiner David L. , Miranda Joyal , Fredericks Suzanne , Epstein Dana R. 
Published: May 2021

<p>Background: Empirical evidence pertaining to the influence of treatment preferences on attrition, adherence and outcomes in intervention evaluation trials is inconsistent. The inconsistency can be explained by the method used for allocating treatment and measuring preferences. The current methodological study is designed to address these factors by implementing the two-stage partially randomized or preference trial design, and administering a validated measure to assess participants’ preferences for the treatments under evaluation. It aims to compare attrition, adherence and outcomes for participants allocated randomly or by preference to treatment. The study is in its final stages of data collection; its protocol is presented in this paper. </p>
<p>Methods/Design: A partially randomized clinical or preference trial is used. Eligible participants are randomized to two trial arms. First is the random arm involving random assignment to treatments, and second is the preference arm involving allocation to the chosen treatment. Participants with chronic insomnia are targeted. Two behavioral treatments are offered, stimulus control therapy and sleep restriction therapy, in the same format (small group) and dose (two sessions given over a 4-week period). A participant log is used to collect data on attrition. Adherence is evaluated in terms of exposure and enactment of treatment. Sleep-related outcomes (sleep parameters and perceived insomnia severity) are measured at pretest, posttest, 6 and 12 month follow-up. Treatment preferences, adherence and outcomes are assessed with reliable and valid measures. </p>
<p>Discussion: The advantages and limitations of the preference trial design are highlighted. The challenges in implementing the trial are discussed relative to the distribution of participants in the groups defined by treatment received and method of treatment allocation. </p>
<p>Trial registration: ClinicalTrials.gov Registry NCT02513017</p>
Faktor Yang Berhubungan Dengan Kejadian Heat Strain Pada Pekerja Divisi Produksi PT. Industri Kapal Indonesia (Persero) Kota Makassar
Authors: Amir Amelinda , Ikhram Hardi S  , Sididi Mansur 
Published: May 2021

Heat strain merupakan dampak akut atau kronis yang diakibatkan oleh paparan tekanan panas yang dialami oleh seseorang dari aspek fisik maupun mental. Penelitian ini bertujuan untuk mengetahui faktor yang berhubungan dengan kejadian heat strain pada pekerja divisi produksi di PT. Industri Kapal Indonesia (Persero) Kota Makassar. Jenis penelitian yang digunakan kuantitatif metode observasional analitik dengan rancangan cross sectional study. Populasi penelitian sebanyak 104 pekerja, sampel penelitian sebanyak 77 pekerja yang diambil secara simple random sampling dari pekerja bagian produksi PT. Industri Kapal Indonesia (Persero) Kota Makassar. Cara pengambilan data melakukan observasi, wawancara dan dokumentasi dengan menggunakan alat heat stress monitor, kuesioner, alat tulis dan kamera.Teknik analisis data menggunakan uji korelasi Chi-square pada program SPSS dengan tingkat kepercayaan 95% (α=0,05). Ada hubungan antara tekanan panas dengan heat strain (p=0.015), ada hubungan antara umur dengan heat strain (p=0.044), tidak ada hubungan antara riwayat penyakit dengan heat strain (p=0.426), ada hubungan antara status gizi dengan heat strain (p=0,001) dan ada hubungan antara konsumsi air minum dengan heat strain (p=0.008) pada pekerja produksi PT. Industri Kapal Indonesia (Persero) Kota Makassar. Kesimpulan dari penelitian ini ada hubungan antara tekanan panas dengan Heat Strain (p=0.015), Umur dengan Heat Strain (p=0.044), status gizi dengan heat strain nilai (p=0,001) dan konsumsi air minum dengan Heat Strain (p=0.008).
Pelatihan Pemantapan Pengolah Kata dan Angka Untuk Pembuatan Laporan Kepada Pegawai Pemerintahan
Authors: Sinaga Hommy Dorthy Ellyany , Syafnur Afdhal , Irawati Novica 
Published: May 2021

Abstract: Training on word processor and spreadsheet is needed for government employees at UPT Pengelolaan Irigasi Asahan Danau Toba in making reports such as annual report, financial report, performance report, and etc. The government employees have had the basic knowledge of using word processor and spreadsheet, but there are still many advanced fiture that never used before to fastened the process of reporting making. The lecturer team of Sekolah Tinggi Manajemen Informatika dan Komputer Royal is making a community service in UPT Pengelolaan Irigasi Asahan Danau Toba in February 2021. Training method is a practical training to allow the participants implement the given knowledge. The training is running well and get the positive result from the participants and the head of UPT Pengelolaan Irigasi Asahan Danau Toba. The training result is shown by enhancement of the ability in understanding and practising the training materials of word processing and spreadsheet for making reporting during the session. Keywords: government employee, reporting; spreadsheet; word processor Abstrak: Pelatihan pemantapan pengolah kata dan angka sangat dibutuhkan oleh pegawai pemerintahan khususnya di UPT Pengelolaan Irigasi Asahan Danau Toba dalam pembuatan laporan seperti laporan tahunan, laporan keuangan, laporan kinerja dan lain-lain. Para pegawai sudah memiliki pengetahuan dasar tentang pengolah kata dan angka, tetapi masih banyak fitur pada perangkat lunak yang belum diketahui dan dipergunakan untuk dapat mempermudah dan mempercepat pembuatan laporan di instansi terkait. Oleh karena itu, tim Dosen Sekolah Tinggi Manajemen Informatika dan Komputer Royal melakukan kegiatan pengabdian kepada mas-yarakat dengan memberikan pelatihan kepada para pegawai di UPT Pengelolaan Irigasi Asahan Danau Toba pada Februari 2021. Metode pelatihan diberikan dalam bentuk practical training sehingga para peserta dapat langsung menerapkan pengetahuan yang diperoleh. Pelaksanaan pelatihan berjalan dengan baik dan mendapat respon yang positif dari para peserta dan pimpinan UPT Pengelolaan Irigasi Asahan Danau Toba. Hasil kegiatan pelatihan dapat dilihat dari peningkatan kemampuan peserta dalam memahami dan mempraktekkan secara langsung materi pengolahan kata dan angka untuk pembuatan laporan yang disampaikan selama pelatihan.Kata kunci: laporan; pengolah angka; pengolah kata
TIC´s como herramienta para el comercio electrónico en las MIPYMES del Cantón Machala
Authors: Carrión-Carrión Jennifer , Muñoz-Jimbo Selena , Romero-Black Wilton , Mora-Sanchez Norman 
Published: May 2021

El comercio electrónico hoy en día se ha convertido en uno de los principales medios para dar a conocer los productos y/o servicios que brinda una empresa, por lo tanto, la investigación tiene como objetivo analizar las TICs como herramienta para el comercio electrónico mediante el uso de plataformas virtuales (redes sociales) para el desarrollo económico empresarial de las MiPymes en Machala, para efecto de elaboración de este trabajo se ha tomado como método el enfoque cuantitativo, descriptivo y bibliográfico, los cuales han servido como instrumento para la recolección de información, como principales variables la satisfacción de cliente, la utilización de tecnología, el comercio y la seguridad electrónica, además de ello en el análisis de variables aplicando el modelo Servqual basado en dimensiones las cuales ayudan a diagnosticar falencias empresariales, permitiendo generar estrategias para corregirlo.
Analysis of magnetic properties of A3B6 type of semiconductor crystals with metalic impurities due to their military applications
Authors: Seredyuk Bohdan 
Published: May 2021

The Earth's magnetic field is affected by the presence of heavy military armored vehicles which creates an additional magnetic moment. This distortion of the magnetic field, can be detected using magnetoresistive structures. This article touches base on the possibility of using semiconductor material such as InSe for high precision measurement of the magnetic field. The properties of InSe structures with regard to electrical, magnetic and optical characteristics are discussed. The effect of sharp anisotropy of InSe layered structure which consists in the strong covalent bond within the layers and a weak van-der-Waals bond in the interlayer space is discussed with regard to the explanation of how electrical, magnetic and optical properties are altered. The peculiarity of the spatial orientation of the material with regard to the direction of the magnetic field is considered. The impact of intercalation of InSe, GaSe by various concentrations of metal impurities such as nickel and other elements of 3d iron group is studied. Bode diagrams for pure InSe system are compared with the ones of NixInSe (for various x values). Also the effect of different temperatures ranging from room temperature to liquid nitrogen on the pattern of Bode diagrams is analyzed. The extent of how the magnetic properties of semiconductor crystals of the A3B6 type are altered by the presence of the metal impurities and their concentration is analyzed. Theoretic background for this paper is based on a well-known statement that layer structures such InSe or other A3B6 structures can be viewed as quasi two-dimensional. So, layers with strong covalent bond are formed by In-Se atoms, whereas interlayer space is filled with a weak Van der Waals bond. Within this model the processes across the layers can be described as a perturbation to the ones along the layers. This causes a strong anisotropy of the properties of these structures. Military implication of InSe structures mentioned throughout this paper is that these structures possess magnetoresistive properties and they were proved to be useful for the components of the magnetic sensors of civil and military use. This paper also touches base on how the InSe semiconductor crystals intercalated by 3d-elements can extend the functionality of magnetic sensors designed for heavy armor detection.
Band Gap Reduction in Ferroelectric BaTiO3 Through Heterovalent Cu-Te Co-Doping for Visible-Light Photocatalysis
Authors: Rohj Rohit Kumar , Hossain Akmal , Mahadevan Priya , Sarma D. D. 
Published: May 2021

It is believed that ferroelectrics may serve as efficient photocatalysts as well as photovoltaic materials but for their large bandgaps which does not allow them to absorb a large part of the solar spectrum. We have explored theoretically within ab-initio density functional theory-based calculations, the efficacy of Cu and Te to co-dope BaTiO3 in reducing its bandgap while retaining its ferroelectric properties. Examining a dopant concentration of 11%, we find an insulating ground state being realized with a band gap reduction of 0.42 eV from the value for undoped BaTiO3 for some doping configurations. Ferroelectric distortions are found to survive even in the presence of doping suggesting possible applications in photocatalysis as well as photovoltaics.
Conversion of Cyclohexane to 6-Hydroxyhexanoic Acid Using Recombinant Pseudomonas taiwanensis in a Stirred-Tank Bioreactor
Authors: Bretschneider Lisa , Heuschkel Ingeborg , Wegner Martin , Lindmeyer Martin , Bühler Katja , Karande Rohan , Bühler Bruno 
Published: May 2021

6-hydroxyhexanoic acid (6HA) represents a polymer building block for the biodegradable polymer polycaprolactone. Alternatively to energy- and emission-intensive multistep chemical synthesis, it can be synthesized directly from cyclohexane in one step by recombinant Pseudomonas taiwanensis harboring a 4-step enzymatic cascade without the accumulation of any intermediate. In the present work, we performed a physiological characterization of this strain in different growth media and evaluated the resulting whole-cell activities. RB and M9* media led to reduced gluconate accumulation from glucose compared to M9 medium and allowed specific activities up to 37.5 ± 0.4 U gCDW−1 for 6HA synthesis. However, 50% of the specific activity was lost within 1 h in metabolically active resting cells, specifying growing cells, or induced resting cells as favored options for long-term biotransformation. Furthermore, the whole-cell biocatalyst was evaluated in a stirred-tank bioreactor setup with a continuous cyclohexane supply via the gas phase. At cyclohexane feed rates of 0.276 and 1.626 mmol min−1 L−1, whole-cell biotransformation occurred at first-order and zero-order rates, respectively. A final 6HA concentration of 25 mM (3.3 g L−1) and a specific product yield of 0.4 g gCDW−1 were achieved with the higher feed rate. Product inhibition and substrate toxification were identified as critical factors limiting biocatalytic performance. Future research efforts on these factors and the precise adjustment of the cyclohexane feed combined with an in situ product removal strategy are discussed as promising strategies to enhance biocatalyst durability and product titer and thus to enable the development of a sustainable multistep whole-cell process.
Anti-Alpha-Amino-3-Hydroxy-5-Methyl-4-Isoxazolepropionic Acid Receptor Encephalitis: A Review
Authors: Zhang Tian-Yi , Cai Meng-Ting , Zheng Yang , Lai Qi-Lun , Shen Chun-Hong , Qiao Song , Zhang Yin-Xi 
Published: May 2021

Anti-alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) encephalitis, a rare subtype of autoimmune encephalitis, was first reported by Lai et al. The AMPAR antibodies target against extracellular epitopes of the GluA1 or GluA2 subunits of the receptor. AMPARs are expressed throughout the central nervous system, especially in the hippocampus and other limbic regions. Anti-AMPAR encephalitis was more common in middle-aged women and most patients had an acute or subacute onset. Limbic encephalitis, a classic syndrome of anti-AMPAR encephalitis, was clinically characterized by a subacute disturbance of short-term memory loss, confusion, abnormal behavior and seizure. Magnetic resonance imaging often showed T2/fluid-attenuated inversion-recovery hyperintensities in the bilateral medial temporal lobe. For suspected patients, paired serum and cerebrospinal fluid (CSF) testing with cell-based assay were recommended. CSF specimen was preferred given its higher sensitivity. Most patients with anti-AMPAR encephalitis were complicated with tumors, such as thymoma, small cell lung cancer, breast cancer, and ovarian cancer. First-line treatments included high-dose steroids, intravenous immunoglobulin and plasma exchange. Second-line treatments, including rituximab and cyclophosphamide, can be initiated in patients who were non-reactive to first-line treatment. Most patients with anti-AMPAR encephalitis showed a partial neurologic response to immunotherapy.