bluuebunny/crossref_metadata_2025 huggingface dataset:
Clinical relevance of 18F-FDG PET/CT in the postoperative follow-up of patients with history of medullary thyroid cancer
Authors: Saponjski Jelena , Macut Djuro , Saranovic Dragana Sobic , Radovic Branislava , Artiko Vera
Published: November 2020

Background

The aim of the study was evaluation of 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography with computed tomography (PET/CT) in the detection of active disease in the patients with suspected recurrence of the medullary thyroid carcinoma (MTC).

Patients and methods

18F-FDG PET/CT investigation was performed in 67 patients, investigated from 2010 to 2019. _ Follow up was performed from 6 to 116 months after surgery (median 16.5 months, x± SD = 29±28.9 months). Twenty five of 67 patients underwent 99mTc-dimercaptosuccinic acid (99mTc-DMSA) scintigraphy, 11 underwent somatostatin receptor scintigraphy (SRS) with 99mTc-HYNIC TOC while 11 123I-metaiodobenzylguanidine (MIBG) scintigraphy.

Results

From 67 patients, 35 (52.2%) had true positive 18F-FDG PET/CT findings (TP). Average maximal standardized uptake value (SUVmax) for all TP lesions was 5.01+3.6. In 25 (37.3%) patients findings were true negative (TN). Four (6%) patients had false positive (FP) findings while three (4.5%) were false negative (FN). Thus, sensitivity of the 18F-FDG PET/ CT was 92.11%, specificity 86.21%, positive predictive value 89.74%, negative predictive value 89.29% and accuracy 89.55%. In 27 patients (40%) 18F-FDG PET/CT finding influenced further management of the patient.

Conclusions

18F-FDG PET/CT has high accuracy in the detection of metastases/recurrences of MTC in patients after thyroidectomy as well as in evaluation and the appropriate choice of the therapy.
The Effect of the Work-Life Interface on Insomnia: A Longitudinal Analysis of Male and Female Employees in Switzerland
Authors: Lucchini Mario , Riva Egidio
Published: November 2020

This study draws on the Swiss Household Panel and employs specific panel data methods to investigate whether work-life conflict – decomposed into time-, and strain-based conflicts – and lack of recovery during off-job time (i. e. psychological detachment from work) cause insomnia. The findings indicate that, when adequately accounting for individual hetero geneity and the relative importance of multiple causal factors, recovery and recuperation processes appear crucial to the experience of insomnia, while the significance of perceived work-life conflict recede, for both men and women.
Debt and Subjective Well-Being: Does the Type of Debt Matter?
Authors: Coste Tristan , Henchoz Caroline , Wernli Boris
Published: November 2020

Based on longitudinal analyses of data from the Swiss Household Panel, this paper investigates the effect of different types of debt on two evaluative measures of subjective well-being: financial satisfaction and life satisfaction. Payment arrears reduce financial satisfaction more than loans or the accumulation of different types of debt (arrears and loans). This negative effect is stable over time. Conversely, each additional year with arrears decreases life satisfaction, confirming the overall and general negative effect of arrears on all domains of daily life, especially for the elderly.
(When) Do Critical Life Events Push People to the Populist Radical Right? Support for the Swiss People’s Party Following Relationship Dissolution, Unemployment or a Health Crisis
Authors: Voorpostel Marieke , Kuhn Ursina , Monsch Gian-Andrea
Published: November 2020

Using the Swiss Household Panel, we examine whether experiencing relationship dissolution, unemployment, or a health crisis increases support for the Swiss People’s Party (SVP). Fixed effects models shows this to be the case. Changes in financial resources, attitudes or trust in the government cannot explain this effect. Finally, we test whether increased support for the SVP following these events is more likely among individuals with lower trust and income levels and with views similar of those of the SVP. We find that individuals with traditional gender values are more likely to support the SVP after separation.
Implicațiile factorilor cognitivi si de personalitate în luarea deciziilor – un model teoretico-explicativ
Authors: Vîrgă Delia
Published: November 2020

This study is aimed to show the influence of cognitive and non-cognitive factors on decisional efficiency through the design of a theoretical-explicative model and by testing it against reality. This model reflects the link between cognitive variables, personality variables and decisional performance.

The participants in this study (N=88) are managers in a IT&C company and have an average age of 32.3 years and a average working seniority of 8.6 years, 74.9% being males and 25.1 % being females.

The instruments used were California Psychological Inventory (CPI 260 items form), a questionnaire for assessing the decisional style, a decision making questionnaire, decisional skills test (BTPAC), and Raven standard test, Plus form, a questionnaire for assessing cognitive complexity and Melbourne decision making questionnaire. In order to evaluate decisional performance I developed an behaviorally anchored scale.

The evaluation of cognitive competencies, defined in behavioral terms like decision making performance and cognitive complexity, together with the personality dimensions, help us to select managers with an increased adaptive orientation to organizational change and a better decisional performance
Influence of automation on biomechanical exposure of the upper-limbs in an industrial assembly line: a pilot study
Authors: Santos Joana , Abreu Ana Betty , Fonseca Pedro , Carvalhais Carlos , Santos Baptista J. , Santos Rubim , Vaz Mário
Published: November 2020

Automation of assembly work was originally developed to increase operation efficiency and to reduce workload. However, a considerable number of unanticipated ergonomic problems have been observed such as the interaction between humans and automated systems. The aims of this study were to quantify joint angle positions (shoulder, elbow and wrist) of workers in two assembly lines with different mechanization levels and analyse the performance of an inertial motion capture system. Seven experienced female assemblers participated in this study. The measurements were performed in the workplace with a full-body inertial measurement system (Xsens MVN BIOMECH system). Maximum cross-correlation between angle-time courses was calculated to quantify the waveform similarities. In manual line, there are larger variations of joint angles than in the semi-automatic one. The analysis of cross correlation coefficients revealed that electromagnetic interferences are potential limitations to the use of these systems under field conditions.
Fatal electrical accidents in Finland 1980–2019 – trends and reducing measures
Authors: Linja-aho Vesa
Published: November 2020

This paper analyses the content of fatal electrical accident records (n=157) in Finland during the years 1980–2019 in order to identify and classify accident types and causes. During the 40-year period, the death rate from electrical accidents has decreased from 0.29 per 100,000 people per year to 0.00-0.07 in the last decade. The number of accidents rooting from accidentally touching live parts and by making illegal electrical installations has plummeted. Of all fatalities, 37% could probably have been prevented if the circuit had been protected with a residual current device, which is now mandatory in new installations. The most common electrical accident in 2010–2019 was an electric shock from a railway overhead power line. Of fatal electrical accidents, 76% occur between April and September and 92.5% of victims are male. Child casualties are very rare. The level of electrical safety can be considered acceptable, but educating the public still has room for improvement.
Experimental assessment of thermal sensation and thermal comfort of sedentary subjects: a scoping review protocol
Authors: Costa Daniele , Guedes J. C. , Santos Baptista J.
Published: November 2020

Thermal comfort affects satisfaction in the workplace, which impacts work efficiency and productivity. Since office workers spend most of their working hours performing sedentary tasks, a scoping review is proposed to contextualize how thermal sensation and thermal comfort are experimentally assessed in the scientific literature. This work presents the scoping review protocol for the scoping review. It follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses for systematic review protocols (PRISMA-P). The scoping review will be elaborated based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews (PRISMA-ScR). The scoping review will consider peer-reviewed articles written in English, published or in-press. Grey literature and conference papers will be excluded. Only studies performing the experimental assessment of thermal sensation and thermal comfort of human subjects engaged in sedentary activities within homogeneous environments will be considered suitable for the scoping review. Studies will be retrieved from the Journal Storage (JSTOR), PubMed, Scopus, and Web of Science databases. The search strategy will consist of the use of the expression ("thermal comfort" OR "therm* sensation" OR "thermosensation") AND ("sedentary" or "office work*" or "office task*"). After removing duplicates, the remaining studies will have their title, abstract, and keywords screened. Studies meeting the eligibility criteria will be selected for full-text screening. Data items will be summarized using summary tables, and their reporting will consider the PRISMA-ScR checklist. The scoping review aims to summarize the existing scientific evidence and identify research needs to experimentally assess the thermal sensation and the thermal comfort of subjects performing sedentary tasks.
Ensaio de carregamento dinâmico de energia crescente em estacas de elevada capacidade resistente
Authors: Cançado Paraíso Sérgio , Santos Jaime
Published: November 2020

Este trabalho tem como objetivo apresentar uma nova metodologia de execução e interpretação de ensaios de carregamento dinâmico (ECD) de energia crescente em estacas escavadas de elevada capacidade resistente. A metodologia de execução consubstancia-se de critérios técnicos executivos pertinentes e da utilização de sistema de impacto apropriado para a realização de ensaios de carregamento dinâmico em estacas de elevada capacidade resistente. São descritos em detalhe os requisitos do martelo bem como os procedimentos para a preparação e execução do ensaio. Com base no conceito inovador de energia potencial normalizada apresenta-se uma nova proposta para a estimativa da energia potencial necessária em função da capacidade resistente a ser mobilizada. A metodologia de interpretação com base em análises numéricas CAPWAP (Case Pile Wave Analysis Program) para cada golpe de energia crescente, permite o traçado das curvas envoltórias das resistências lateral, de ponta e total em função dos deslocamentos. Esta metodologia proporciona todo um conjunto de informações relevantes que possibilitam avaliar de uma forma clara os mecanismos de transferência de carga entre o fuste e a ponta da estaca. Considera-se ainda a proposta de um deslocamento que corresponda à carga de ruptura convencional definido a partir do encurtamento elástico e do deslocamento da ponta da estaca.
Erosão superficial hídrica em um talude de corte em solo residual de basalto
Authors: Brochero José Luís Rodriguez , Baldissera Naudieli
Published: November 2020

Taludes em corte, sem medidas necessárias para sua estabilização, representam riscos ambientais que podem afetar as pessoas e infraestrutura em seu entorno. Entre as medidas adotadas na prática, encontram- se tratamentos que usam vegetação, fornecendo proteção contra os agentes erosivos, assim como maior estabilidade contra escorregamentos superficiais do talude. A presente pesquisa teve como principal objetivo avaliar o comportamento de diferentes alternativas utilizadas no controle da erosão superficial hídrica de um talude em corte num solo residual de basalto. Foram aplicados três tratamentos ao talude, como: Placas de grama; Placas de grama armada; Geomanta MacMat® usando sementes da região. Neste caso particular, encontrou-se que todos os tratamentos foram eficientes no controle da erosão do talude, sendo que as placas de grama e as placas de grama armada demonstraram maior eficiência ao longo do tempo, enquanto a geomanta começou a mostrar-se igualmente eficiente após 134 dias de sua instalação.
Modeling the directions of export diversification
Authors: Sadriev A.R. , Kamaev B.N.
Published: November 2020

Subject. We consider the impact of export diversification on economic growth rates.
Objectives. The study aims to develop a forecast for export diversification for the BRICS countries.
Methods. The research rests on the product space conceptual platform. The International Trade Data (HS, 92) serve as the information resource of the study.
Results. We developed a multiple regression model for export diversification of BRICS countries. The evaluation metrics for control samples of models are presented with a fairly strong functional link of factorial features, which confirms a high level of relevance of chosen predictors. The paper underpins the anticipated behavior of export diversification in Brazil, Russia, India, China, and South Africa.
Conclusions. Only China and India have an upward trend in the projected values of the analyzed indicator. However, in the model for India, this trend can not be called stable, as it contains numerous fluctuations with rather serious amplitude. The trend for China, by contrast, shows a strictly monotonic trajectory of growth. A similar trend for South Africa demonstrates a stagnation at the level of 25 points. The projected behavior of export diversification in Russia and Brazil has comparable features and is characterized by a certain decline with short periods of fluctuations.
Modeling and optimizing logistics, information, economic and financial intercluster cooperation using the ant colony optimization algorithm
Authors: Yashin S.N. , Koshelev E.V. , Borisov S.A.
Published: November 2020

Subject. This article discusses the issues related to the creation of a technology of modeling and optimization of economic, financial, information, and logistics cluster-cluster cooperation within a federal district.
Objectives. The article aims to propose a model for determining the optimal center of industrial agglomeration for innovation and industry clusters located in a federal district.
Methods. For the study, we used the ant colony optimization algorithm.
Results. The article proposes an original model of cluster-cluster cooperation, showing the best version of industrial agglomeration, the cities of Samara, Ulyanovsk, and Dimitrovgrad, for the Volga Federal District as a case study.
Conclusions. If the industrial agglomeration center is located in these three cities, the cutting of the overall transportation costs and natural population decline in the Volga Federal District will make it possible to qualitatively improve the foresight of evolution of the large innovation system of the district under study.
Analisis Tegangan pada Terowongan Bawah Tanah Dengan Metode Elemen Hingga
Authors: Yessy Yessy , Tedianto Leo S
Published: November 2020

Construction of tunneling in Indonesia is a new thing to be implemented, especially in the capital city of Jakarta, which has land issues for surface transportation. In the construction stage of tunnels, the problem of deformation and stress to the surface of the excavation needs to be considered carefully. Therefore, the purpose of this paper is to analyze the stresses and deformations that occur in underground tunnels during the construction stage using the finite element method. Modeling is done in full 3 dimensions using a finite element based MIDAS GTS NX program. The results of the study showed that the increase in construction stage, the value of deformation that occurs in development will increase. It also occurs in stress, the more construction phases increase the greater the stress value. Shield release has an effect on increasing the stress, causing the stress to increase even greater. This study uses a hybrid mesher element to model the soil and tunnel layers. From this modeling is expected to be the beginning of complex and good tunnel modeling in the future.Keywords: Tunnel, MIDAS GTS NX, stress, Deformation, construction stage, finite element method.
ANALISIS FAKTOR-FAKTOR PENYEBAB KETERLAMBATAN WAKTU PADA PEKERJAAN BASEMENT GEDUNG BERTINGKAT SEMI TOP-DOWN
Authors: Wangsadiputra Joshua , Sekarsari Jane
Published: November 2020

Time delays in construction project will be very detrimental for both the provider and user of construction service because it can cause a conflict which leads to time demand and additional cost. The timeliness in construction of basement is one of the important aspect to gain a success at construction project, remembering basement is an early phase of development at high-rise building project. The purpose of this study is to analyze the factors that can cause time delay in high-rise building semi top-down basement work. The research method used in this study is quantitative and descriptive approach with questionnaire distribution to some high-rise building projects with semi top-down basement. With the help of SPSS software, next step is to analyzing the data in the form of a validity test, reliability test, normality test, and Relative Importance Index (RII) test. The result of this study shows 5 factors that cause the most influence the delay of semi top-down basement work based on the importance ranking is variation and changes of order by owner, low productivity level of labors, leak on the diaphragm wall, repeated changes rebar layout due to space that too narrow, and material delivery delays. ABSTRAKKeterlambatan waktu pada pelaksanaan proyek akan sangat merugikan para pelaku jasa konstruksi karena dapat menyebabkan konflik yang berujung terjadinya tuntutan waktu dan biaya tambahan. Ketepatan waktu pada pekerjaan basement merupakan salah satu aspek penting dalam kelancaran suatu proyek konstruksi, mengingat basement merupakan salah satu pembangunan tahap awal pada proyek gedung bertingkat. Penelitian ini bertujuan untuk menganalisa faktor-faktor yang dapat mempengaruhi keterlambatan waktu pada pekerjaan basement semi-top down. Metode penelitian yang digunakan pada studi ini adalah pendekatan secara deskriptif kuantitatif dengan penyebaran kuesioner kepada beberapa proyek gedung bertingkat dengan basement semi top-down. Selanjutnya, dilakukan pengolahan data dengan bantuan software SPSS berupa uji validitas, uji reliabilitas, uji normalitas, dan Relative Importance Index (RII). Hasil penelitian menunjukkan, terdapat 5 faktor yang paling mempengaruhi keterlambatan pekerjaan basement semi top-down menurut tingkat pengaruhnya yaitu perubahan perintah kerja dan variasi dari owner, produktivitas pekerja lapangan yang rendah, terjadi kebocoran pada Dinding Penahan Tanah (DPT), pengaturan tata letak penyimpanan tulangan yang berulang-ulang akibat lahan yang terlalu sempit, dan pengiriman material yang terlambat.
Analisis Alternatif Perancangan Desain Dalam Pembangunan Jalan Di Atas Tanah Gambut
Authors: Hartanto Fendy , Makarim Chaidir Anwar
Published: November 2020

The construction of a new capital city will be carried out in Kalimantan where there is a lot of land covered with peat soils. Peat soils might cause a lot of problems during construction projects, because peat soils usually have a weak shear strength and high permeability. In this case there will be a road construction with width of 12 meters and length of 20 meters on peat soils. To overcome this problem there are some solutions by using piles until it reached its needed bearing capacity or soil replacement will work as well, because not only its increasing its strength but it also prevent peat soils from catching fire since dry peat soils is quite flammable which happens in dry weather. From these methods there are advantages and disadvantages and will be analised which methods is better to be done for this road construction that is on peat soils. Calculations for piles will be done with program PLAXIS 2D to get the total displacements/settements to get the number of piles and dimensions, and for soil replacements will be counted by its soil volume that need to be replaced. The results will be reference to conclude which methods will be most suitable for this case.  Pembangunan ibu kota baru akan dilaksanakan di Kalimantan dimana disana terdapat banyak sekali tanah gambut. Tanah gambut bisa menjadi masalah ketika kita sedang melakukan pembangunan konstruksi karena tanah gambut biasanya memiliki kekuatan geser yang kecil dan permeabilitas yang tinggi. Pada kasus kali ini akan dibangun jalan selebar 12  meter dengan panjang 20 meter yang terdapat tanah gambut dibawahnya. Untuk mengatasi masalah tanah gambut ini bisa diterapkan beberapa metode yaitu dengan memancang di tanah gambut dengan tiang pancang hingga mencapai tanah keras yang berada dibawahnya, soil replacement juga bisa menjadi suatu solusi karena selain membuang tanah gambut itu sendiri yang dimana cukup berbahaya dikarenakan mudah terbakar ketika musim kering, tetapi juga meningkatkan kekuatan dari daya dukung tanah itu sendiri. Dari kedua metode tersebut memiliki kelebihan dan kekurangan masing-masing dan akan dianalisis metode apa yang lebih baik dan sesuai dalam membangun konstruksi jalan yang melintasi tanah gambut sepanjang 20 meter. Perhitungan tiang pancang menggunakan program PLAXIS 2D untuk membantu mendapatkan nilai total penurunan dan jumlah tiang dan ukuran yang dibutuhkan dan untuk metode soil replacement akan dihitung volume tanah yang akan dikeruk dan ditimbum Kembali. Hasil pengolahan data dari perhitungan akan menjadi acuan sebagai pembanding metode apa yang sesuai dalam kasus kali ini.
Analisis Kapasitas Lateral Pada Fondasi Tiang Tunggal Dan Tiang Kelompok Pada Tanah Pasir
Authors: Cho Morris , Wijaya Hendy , Yuwono Amelia
Published: November 2020

Fondasi ialah bagian dari suatu sistem rekayasa yang meneruskan beban yang ditopang oleh fondasi dan beratnya sendiri kedalam tanah dan batuan yang terletak dibawahnya. Pada jurnal ini, dilakukan analisa kapasitas lateral tiang tunggal dan tiang kelompok pada tanah pasir. Untuk dapat menganalisis tiang pancang tunggal dan tiang kelompok pada tanah pasir dalam kondisi elastic dapat dilakukan dengan metode analisis statik non linier atau analisis pushover. Analisis pushover adalah prosedur analisis untuk mengetahui keruntuhan suatu bangunan dengan memberikan suatu pola beban statik tertentu dalam arah lateral yang besarnya akan ditingkatkan secara bertahap sampai struktur tersebut mencapai target displacement tertentu atau mencapai pola keruntuhan tertentu. Dari hasil analisis pushover terhadap suatu tiang dihasilkan kurva yang menghubungkan antara base shear dan roof displacement atau disebut kurva kapasitas. Dari kurva kapasitas tersebut dapat dilihat perilaku suatu tiang dari kondisi elastis sampai plastis hingga mengalami kegagalan. Dengan adanya kurva kapasitas yang diperoleh, kita dapat melihat tingkat kinerja suatu tiang berdasarkan metode spektrum kapasitas berdasarkan peraturan ATC-40 dan Pushover Analysis of Underground Structures. The foundation is part of an engineering system that forwards the burden supported by the foundation and its own weight into the soil and rocks beneath. In this journal, an analysis of the lateral capacity of single piles and group piles is carried out on sandy soil. To be able to analyze a single pile and group piles on sandy soil in elastic conditions can be done by non-linear static analysis or pushover analysis. Pushover analysis is an analysis procedure to determine the collapse of a building by providing a certain static load pattern in the lateral direction whose magnitude will be increased gradually until the structure reaches a certain displacement target or reaches a certain collapse pattern. From the results of pushover analysis on a pile, a curve that connects the base shear and roof displacement is called a capacity curve. From the capacity curve, it can be seen the behavior of a pile from elastic to plastic conditions to failure. With the obtained capacity curve, we can see the level of performance of a pile based on the capacity spectrum method based on ATC-40 regulations and Pushover Analysis of Underground Structures.
STUDI PARAMETRIK JARAK PENGARUH PENURUNAN DAN PERGERAKAN LATERAL AKIBAT VACUUM PRE-LOADING PADA DAMAGE AREA SEKITAR
Authors: Lay Mario Oktavianus , Sumarli Inda , Iskandar Ali
Published: November 2020

ABSTRACTSoil-fill is type of soil with low bearing capacity, therefore it’s need soil improvement to resolve the settlement. Soil improvement divided into 2 categories, namely methods that use new material and reinforcement. Commonly used method is PVD combined with vacuum pre-loading. Pre-loading is an application to increase surcharge load which aims to reduce the primary settlement occurs. Pre-loading not only causes settlement, but also cause lateral displacement which cause damage to the outside area around the improvement area. Thus, an analysis of distance effect between the improvement boundary and outside of improvement area in needed to prevent damage to utility around the site. Deformation analysis will be assisted by 2-Dimensional finite element program. Width of the improvement area is 80 meters with a depth of PVD is 14.5 meters to verify parameters. With the parameters that have been verified, an analysis is carried out on PVD with depth of 5m to 30m to determined distance effect of settlement and lateral displacement from boundary of the improvement area to until the value of the settlement and lateral displacement reaches <2cm. Result of studies on general is to find distance effect caused by vacuum pre-loading in areas outside the improvement boundary.ABSTRAKTanah hasil urugan merupakan jenis tanah lunak dengan daya dukung yang rendah, sehingga terjadi penurunan konsolidasi dan membutuhkan perbaikan. Perbaikan tanah dibagi menjadi 2 kategori, yaitu metode yang menggunakan material baru dan menggunakan pemanfaatan perkuatan. Metode yang umum digunakan adalah PVD yang dikombinasikan dengan vacuum pre-loading. Pre-loading adalah aplikasi penambahan beban surcharge yang bertujuan agar terjadinya penurunan primer. Pre-loading tidak hanya menyebabkan penurunan, tetapi juga menyebabkan terjadinya perpindahan secara lateral kearah luar yang dapat menyebabkan kerusakan pada area luar disekitar daerah perbaikan. Sehingga, dibutuhkan analisis jarak pengaruh antara batas lahan perbaikan dengan daerah luar perbaikan, untuk mencegah kerusakan pada struktur atau utilitas disekitar lokasi perbaiki. Analisis deformasi menggunakan program elemen hingga 2D. Lebar area perbaikan 80 meter dengan kedalaman PVD 14.5 meter untuk melakukan verifikasi parameter. Dengan parameter yang telah diverifikasi, dilakukan analisis pada PVD dengan kedalaman 5m hingga 30m untuk mengetahui jarak pengaruh penurunan dan pergerakan lateral dari batas lahan perbaikan hingga nilai penurunan dan pergerakan lateral <2 cm. Hasil studi secara umum menunjukkan seberapa besar jarak pengaruh yang diakibatkan oleh vacuum pre-loading pada daerah diluar batas perbaikan.
EFEKTIVITAS SECANT PILE DENGAN MENGGUNAKAN BANTUAN BAMBU, CRUSHED STONE, KAYU, PASANGAN BATA, DAN MORTAR
Authors: Jason Jason , Susilo Alfred Jonathan
Published: November 2020

Saat ini, proses perkembangan infrastruktur di Indonesia berkembang dengan pesat. Salah satu permasalahan yang ada adalah terbatasnya ketersediaan lahan sehingga basement menjadi solusi yang banyak dipilih. Masalah utama dalam pembangunan basement yang sering dihadapi adalah adanya pembangunan tinggi di sekitarnya sehingga dibutuhkan struktur dinding penahan tanah yang dapat menjaga kestabilan tanah akibat beban yang ada di permukaan. Dinding penahan tanah merupakan salah satu elemen penting dalam pekerjaan konstruksi yang paling dasar, yang dapat mempengaruhi pekerjaan konstruksi secara keseluruhan. Elemen ini berfungsi untuk menahan tekanan tanah lateral yang ditimbulkan tanah urug ataupun tanah asli yang labil. Pada dasarnya, dinding penahan tanah merupakan elemen konstruksi yang sudah digunakan sejak bertahun-tahun lalu. Untuk mengatasi masalah tersebut, maka digunakan secant pile. Penelitian yang akan dilakukan adalah menggunakan batu kali, kayu, bambu pada secant pile yang akan menjadi alternatif lain cor-an bentonite pada tahap kedua pelaksanaan pekerjaan secant pile. Pada penelitian ini juga akan membandingkan efektifitas secant pile dengan menggunakan bantuan bambu, crushed stone, kayu, pasangan bata, dan mortar
Effect of Laying Time and Age-Related Change on Egg Characteristics in Brown Layer Pure Lines
Authors: Eleroğlu Hasan , Taşdemir Ahmet Nuri
Published: November 2020

In this study, the Brown Layer Pure Line that housing as individual cage system at the Poultry Research Institute in Ankara was used. Eggs obtained from 24, 28, 32, 36 and 40 weeks old eggs were collected 3 times a day in the morning (10:00), noon (12:00) and evening (15:00). On a total of 427 eggs; Shape Index (SI), Egg weight (YA, g), Albumen height (AY, mm), Roche scale (RS), Haugh unit (HB), Egg Quality Classes (YKS), Shell strength (KM, N) and Shell thickness (KK, Micron) features are emphasized and colour parameters (L*, a*, b*, Hue, Ch and Î”E) of egg shell were determined. The effect of oviposition time was found significant on the Shape index, Egg weight (g), Haugh unit and Shell thickness (micron) values. However, Albumen height (mm), Egg Quality, Roche scale and Shell strength (N) were not affected by oviposition time. Among the egg shell colour parameters, a*, b*, Hue and Chrome values were affected by the oviposition time, and the calculated difference was found to be statistically significant.
Head-up tilt test – a rationale for using in diagnosis of syncope
Authors: Stanczyk Adam
Published: November 2020

Fainting and loss of consciousness (including syncope) are one of the most common causes of medical consultations. A detailed history is of particular importance in their diagnosis. It allows to select a group of patients with a high risk of life-threatening condition and to direct further interdisciplinary process with the participation of a cardiologist, neurologist, psychiatrist and psychologist. The head-up tilt test (HUTT) has a special place in the diagnosis of neurocardiogenic syncope. The main purpose of this review is to highlight the indications for HUTT and indicate situations in which it should be avoided due to the lack of added value of the applied therapy.
Removal of Aniline Blue from Textile Wastewater using Electrocoagulation with the Application of the Response Surface Approach
Authors: Atiya Mohammed A. , M-Ridha Mohanad J. , Saheb Meqat A.
Published: November 2020

This paper investigated the treatment of textile wastewater polluted with aniline blue (AB) by electrocoagulation process using stainless steel mesh electrodes with a horizontal arrangement. The experimental design involved the application of the response surface methodology (RSM) to find the mathematical model, by adjusting the current density (4-20 mA/cm2), distance between electrodes (0.5-3 cm), salt concentration (50-600 mg/l), initial dye concentration (50-250 mg/l), pH value (2-12 ) and experimental time (5-20 min). The results showed that time is the most important parameter affecting the performance of the electrocoagulation system. Maximum removal efficiency (96 %) was obtained at a current density of 20 mA/cm2, distance between electrodes of 1.75 cm, salt concentration of 462.5 mg/l, dye concentration of 50 ppm, pH value of 7, and time duration of 15 min. On the other hand, the electrocoagulation efficiency was directly proportional to current density, salt concentration, and contact time, while it was inversely proportional to dye concentration. Isotherm experiments showed that the equilibrium data are best fitted to Freundlich isotherm and sips isotherm; whereas the kinetics results showed that the rate of adsorption followed the pseudo-second-order with an R2 value of 98 %.
Serum Level of Interleukin-35 in Patients with Chronic Hepatitis B Virus Infection
Authors: Al-azzawi Raghad H. , Mohsen Rana T. , Ad'hiah Ali H.
Published: November 2020

Interleukin-35 (IL-35) is a new member of IL-12 family of cytokines, and its role in pathogenesis of hepatitis B virus (HBV) infection has been recently suggested. Accordingly, a case-control study was conducted during June - October 2018 to determine IL-35 serum level in Iraqi patients with chronic HBV infection. The results revealed that IL-35 level was significantly decreased in patients as compared to control (163 vs. 301 pg/ml; p < 0.001). However, such decreased level was more pronounced in patients at the age groups < 40 and 40 â€“ 50 years (165 and 145 pg/ml, respectively) as compared to the corresponding age groups in control (482 and 234 pg/ml, respectively). In the case of gender groups, both male and female patients showed a significantly decreased level of IL-35 compared to the corresponding control groups (163 and 163 vs. 306 and 297 pg/ml; p = 0.004 and 0.001, respectively). Distributing HBV patients and control according to medians of IL-35 (â‰¤ median and > median) revealed that 67.5% of patients had â‰¤ median compared to 35.4% among control. Such difference was significant (p < 0.001), with a scored odds ratio (OR) of 3.79. Receiver operating characteristic (ROC) analysis revealed that the decreased level of IL-35 occupied an area under curve (AUC) of 0.710, which was highly significant (p < 0.001). At a cut-value of 188 pg/ml or lower, the diagnostic sensitivity and specificity were 67.7 and 66.2%, respectively. In conclusion, these results confirmed the role of IL-35 in the pathogenesis of HBV
La apropiación tecnológica en la investigación histórica y los Estudios Sociales de Ciencia y Tecnología (CTS)
Authors: Quezada Herrera Cristóbal
Published: November 2020

El presente artículo expone una revisión teórica de la literatura existente sobre la apropiación tecnológica en los Estudios de Sistemas de Información (IS) y explora las posibilidades de su uso metodológico en la investigación histórica y en los estudios CTS. Para ello se presentan los resultados de una investigación sobre las concesiones para radiodifusión comunitaria en la Región Metropolitana de Santiago entre 1996 y el año 2000. Se expone la Teoría de Estructuración Adaptativa, el Modelo de Estructuración de Tecnologías, el Modelo de Apropiación de Tecnologías y el Modelo Racional de Apropiación Tecnológica. De este último se lleva a cabo una revisión conceptual para situarlo metodológicamente en el contexto de la investigación.

 

Se recurre a la revisión de los decretos y resoluciones que otorgaron concesión de derechos de transmisión para estaciones radiodifusoras de mínima cobertura y mediante un análisis cuantitativo y cualitativo se establece el rol del sistema de radiodifusión nacional como un limitador, en lo jurídico y en lo técnico, de la apropiación tecnológica de la radiocomunicación comunitaria. Además, sitúa teórica y metodológicamente el estudio de la apropiación tecnológica, en términos históricos, como un campo de disputa y como un modelo libre a precisiones conceptuales locales que requiera cada investigación.

 

Palabras clave:

Apropiación tecnológica; Radios comunitarias; Radiodifusión; Investigación Histórica; Estudios Sociales de la Ciencia y la Tecnología.

 

Abstract:

This article offers a theoretical review of technological appropriation in Information Systems Studies (IS) literature and explores the possibilities of this approach in STS and in historical research. In order to develop that, I expose the research results about community radios concessions in Metropolitan Region of Santiago between 1996 and 2000. The paper presents the Adaptative Structuration Theory, Structurational Model of Technology, Model of Technology Appropriation and Rational Model of Technology Appropriation. Moreover, I propose a conceptual revision of the latter that aims to methodologically situate it in this particular research.

 

I investigate decrees and resolutions of community radios concessions using quantitative and qualitative methods in order to establish the role of radio broadcasting system as a legal and technical limiter in technological appropriation of community radiocommunications. Furthermore, I situate, theorical and methodologically, the approach of technological appropriation in STS and in historical research as a dispute field as well as opening it to local conceptual precisions that other researches may require.

 

Key words:

Technological appropriation; Community radios; Broadcasting; Historical research; Social Studies of Science and Technology.
Short forms of the Wechsler adult scales: a systematic review
Authors: Jiménez Bascuñán Alba , Fuentes-Durá Inmaculada , Dasí Carmen
Published: November 2020

Introduction. Since the appearance of the first WAIS scale, there has been a widespread attempt by researchers in the assessment of cognitive abilities to find short forms that facilitate the clinical practice of professionals in those situations where conditions, either because of the time available or the clinical characteristics of patients, do not necessitate the use of an extensive tool. Objective. To carry out a systematic review of the short forms of up to four subtests extracted from the WAIS-III and WAIS-IV scales. Method. Search for information in the PsycINFO database and systematic review of the information following the PRISMA guidelines. Results. Of the 47 studies found, 36 were selected for full-text revision, of which 13 were finally included in this review: 6 of the WAIS-III and 7 of the WAIS-IV. Different forms achieved good results in the quality criteria established in a variety of samples. Discussion and conclusion. There are several forms that are useful for estimating the IQ, according to the samples and the quality criteria used.
A year - round monitoring of ambient volatile organic compounds across Dardanelles strait
Authors: Mentese Sibel , Bas Batuhan
Published: November 2020

Dardanelles strait has a crucial importance on marine transport, splitting Çanakkale city. Combustion-related anthropogenic sources emit volatile organic compounds (VOCs) into the air and they have public concern due to adverse health effects. In this study, composition of ambient VOCs across Dardanelles strait was monitored for 4 seasons over the year of 2018. A total of 12 sampling locations, including 5 locations on the European and 7 locations on the Asian seashores of Dardanelles strait were determined as sampling points. Standard methods were followed during the sampling and analysis of VOCs. VOCs samples were collected on thermal desorber tubes, containing sorbents of Tenax TA and Carbograph 1TD. Active VOC samples were collected by an air sampling pump and passive VOCs samples were exposed to air for 2 weeks. VOCs samples were analyzed by Thermal Desorber followed by Gas Chromatography – Flame Ionization Detector. Target VOCs in this study were paraffins and aromatic hydrocarbons. Limit of quantification was assessed as ≤ 0.1 µg/m3. According to the results of the study, VOCs concentrations varied both spatially and seasonally. The most abundant VOCs in the air were n-pentane, n-hexane, toluene, benzene, and 1,2,4-trichlorobenzene throughout the study. Furthermore, the highest VOCs levels mostly occurred at the locations that were close to the traffic sources and/or residential areas.
The EU Policy toward Libya
Authors: Megerisi Tarek
Published: November 2020

The Libyan crisis has been a litmus test for European unity and the EU’s ability to act together. Europe's relations with post-revolutionary Libya and European policies on Libya have been characterized by the frequently conflicting interests of Paris, London and Rome, with Berlin emerging as a result of a UN invitation to try and put an end to the instability in Libya. Until the January 2020 Berlin summit, European political and diplomatic interaction with Libya was the domain of EU Member States, with the EU being limited to performing the familiar functions of lending its administrative weight to joint policy roles such as countering migration, promoting business or supporting a developmental road towards stability. All in all, EU strategy remains committed to decision-making mechanisms at Member State level; however, what is exposed in Libya is that the EU toolbox can be a valuable weapon if Europe has a coherent stance. A continuing struggle between member states over how to handle the new world that is emerging in the wake of the Pax Americana is also exposed in European policy on Libya.
Managing the Refugee Crisis in the Era of the COVID-19 Pandemic
Authors: Monshipouri Mahmood , Ellis Burcu Akan , Yip Cassidy Renee Yip
Published: November 2020

This essay seeks to demonstrate that there are both ethical and practical considerations for enabling refugees to manage the coronavirus disease (COVID-19 pandemic). Given that a majority of refugees live in highly congested environments, particularly urban areas, an outbreak would swiftly spread through their local communities. Our argument is twofold: (i) That a new approach is needed to cope with the COVID-19 pandemic –one that recognizes mounting challenges facing refugees and relies on international cooperation rather than the myopic rhetoric and sentiments of xenophobic right-wing politicians; (ii) That helping refugees to curb the spread of the current coronavirus cannot be divorced from social contexts, hence the necessity of improving employment, basic health services, and educational opportunities for refugees.
Analisis Sistem Perawatan Mesin Produksi pada CV Abadi Tiga Mandiri (Studi Kasus Mesin Cup Sealer)
Authors: Marasabessy Sitnah Aisyah , Henaulu Agung K. , Rumbouw Janaria
Published: November 2020

Salah satu faktor produksi yang harus di optimalkan penggunaanya adalah mesin produksi. Mesin di gunakan dalam kegiatan produksi harus mampu beroperasi dengan optimal, pengoperasian di katakan optimal apabila nilai downteminya minimum. Untuk menjamin pengoporasian mesin yang optimal, di perlukan suatu sistem perawatan mesin yang tepat.salah satu permasalahan yang di hadapi CV Abadi Tiga Mandiri adalah kerusakan mesin cup sealer yang akhirnya menghambat proses produksi.Tujuan Penelitian ini adalah untuk mengetaui sistem perawatan dan kebijakan perawatan dalam penurunan ongkos komponen perawatan pada mesin cup sealer. Dalam hal ini adalah untuk mengatahui tentang susunan sistem perawatan mesin produksi pada CV Abadi Tiga Mandiri. Alat analisis yang digunakan dalam penelitian ini adalah Analisis Interprestasi dengan menggunakan metode RCM (Reliability Centeren Maintenance). Hasil perhitungan RCM dalam penelitian ini membuktikan bahwa perlu di lakukan perawatan preventive dalam jangka waktu 5 bulan. Karena berdasarkan hasil perhitungan biaya sub kebijakan preventive yang di perkiraakan sebesar 929.575,6 di bandingkan dengan biaya kerusakan korektif perbulan sebesar Rp 1.126.000 secara matematis akan mahal menggunakan perawatan korektif. Dalam penggunaan metode probabilitas perawatan di harapkan di lakukan setiap 5 bulan sekali.
High-Intensity Interval Training and Continuous Training with Intermittent Calorie Restriction in Overweight Women: Effect on the Inflammation and Lipid Profile
Authors: SARİ-SARRAF Vahid , PARNİAN-KHAJEHDİZAJ Nazila , AMİRSASAN Ramin
Published: November 2020

The purpose of the study was to explore the combination of ICR with High Intensity Interval Training (HIIT) or continuous training over a 8-weeks on inflammatory and lipid profile indexes in overweight women. In the current quasi-experimental study, 36 overweight and obese women were randomly grouped in four groups (n = 9/group) for an additional 8 weeks as follows: 1) intermittent caloric restriction (N=9) (20% lower energy intake), 2) continuous training+ICR (N=11) (20% energy deficit created by 10% CR and 10% EE through CT), 3) High-Intensity Interval Training+ICR (N=9) (20% energy deficit created by 10% CR and 10% EE through HIIT) and 4) control (N=9) (remain on diet). Blood samples were collected to measure the inflammatory indexes (the number of environmental blood leukocytes and C-reactive protein) as well as lipid profile (total cholesterol, triglyceride, HDL and LDL). Data were analyzed using Shapiro–Wilk tests to investigate the natural distribution of the data; repetitive variance was also used to investigate the mean difference between phases and the interactive effect between phases and groups; Bonferroni post-hoc test was also used for comparing intergroup changes in the significance level of α < 0.05. Eight weeks of HIIT and continuous training with ICR led to significant changes in all indexes including lipid profile (HDL, LDL, total cholesterol, triglyceride), VO2max, CRP compared to the pre-test phase. Moreover, there was a significant intergroup difference in the indexes of lipid profile and CRP among control group and ICR, HIIT+ICR and ICR+ continuous groups, lastly, there was also an intergroup cholesterol index (ICR) and HIIT+ICR and ICR+continuous groups (p<0.05). Regarding VO2max, there was a significant intergroup difference between the control group and HIIT+ICR and ICR+ continuous groups (p<0.05). Due to the marked and noticeable effects of eight weeks of HIIT and continuous training along with ICR on inflammatory and lipid profile indexes in overweight women, it can be concluded that the combination of these interventions can be effective in controlling the weight and obesity.
A General Model to Optimise Copper(II) Labelling Efficiency of Double-Histidine Motifs for Pulse Dipolar EPR Applications
Authors: Wort Joshua L. , Ackermann Katrin , Norman David G. , Bode Bela E.
Published: November 2020

Electron paramagnetic resonance (EPR) distance measurements are making increasingly important contributions to studies of biomolecules underpinning health and disease by providing highly accurate and precise geometric constraints. Combining double-histidine (dH) motifs with CuII spin labels shows promise for further increasing the precision of distance measurements, and for investigating subtle conformational changes. However, non-covalent coordination-based spin labelling is vulnerable to low binding affinity. Dissociation constants of dH motifs for CuII-nitrilotriacetic acid were previously investigated via relaxation induced dipolar modulation enhancement (RIDME), and demonstrated the feasibility of exploiting the double histidine motif for EPR applications at sub-μM protein concentrations. Herein, the feasibility of using modulation depth quantitation in CuII-CuII RIDME to simultaneously estimate a pair of non-identical independent KD values in such a tetra-histidine model protein is addressed. Furthermore, we develop a general speciation model to optimise CuII labelling efficiency, in dependence of pairs of identical or disparate KD values and total CuII label concentration. We find the dissociation constant estimates are in excellent agreement with previously determined values, and empirical modulation depths support the proposed model.