bluuebunny/crossref_metadata_2025 huggingface dataset:
Abstract argumentation and (optimal) stable marriage problems
Authors: Bistarelli Stefano , Santini Francesco
Published: November 2019

In his pioneering work on Abstract Argumentation, P.M. Dung set a wide scenario by connecting stable models in Logic and Game Theory to simple Abstract Argumentation Frameworks ( AAF), which are essentially directed graphs in which arguments are represented as nodes, and the attack relation is represented by arrows. From such abstraction and simplicity, it is possible to capture important properties in many different fields. The Stable Marriage ( SM) problem is exactly one of such representable problems. Given two sets of individuals partitioned into men and women, a matching is stable when there does not exist any man-woman match by which both man and woman would be individually better off than they are with the person to which they are currently matched. Stable matchings correspond to stable extensions if an AAF is correctly generated from the given SM problem. In this paper we elaborate on the original formulation by Dung, by also encoding SM problems with ties and incomplete preference lists into AAFs. Moreover, we use Weighted Abstract Argumentation to represent optimality criteria in the optimal extension of SM problems, where some matchings are better than others: criteria may consider only the preference of either men, or women, or a more global view obtained by combining the preferences of both.
On a discrete scheme for time fractional fully nonlinear evolution equations
Authors: Giga Yoshikazu , Liu Qing , Mitake Hiroyoshi
Published: November 2019

We introduce a discrete scheme for second order fully nonlinear parabolic PDEs with Caputo’s time fractional derivatives. We prove the convergence of the scheme in the framework of the theory of viscosity solutions. The discrete scheme can be viewed as a resolvent-type approximation.
Evaluation of endothelial glycocalyx in healthy volunteers – An observational study
Authors: Astapenko David , Ticha Alena , Tomasova Adela , Hyspler Radomir , Zadak Zdenek , Lehmann Christian , Cerny Vladimir
Published: November 2019

BACKGROUND: Endothelial glycocalyx (EG) is a carbohydrate-rich gel-like mesh covering the apical surface of endothelial cells. It has been linked to the microvascular pathophysiology and tissue metabolism. However, little is known about its condition in young healthy adults. OBJECTIVE: We aimed to describe the condition of EG in young healthy adults by in vivo EG imaging and measurement of syndecan-1, a plasma marker of EG integrity in order to obtain reference values. METHODS: For in vivo EG studies we used Side-stream Dark Field imaging of the sublingual microcirculation. Recordings were analysed automatically by GlycoCheck software providing the Perfused Boundary Region (PBR) as a marker of EG thickness. Levels of syndecan-1 were analysed in plasma samples by ELISA. RESULTS: 21 volunteers were included in the study. Median of the PBR value was 1.82 μm (interquartile range 1.69–2.01, 95% CI 1.79–1.97). Median concentration of syndecan-1 was 0.3 ng/ml (interquartile range 0.23–0.39, 95% CI 0.27–0.49). CONCLUSION: This study provides a comparison for cohorts of patients with a particular disease where the EG is presumably damaged. Our findings do not entirely comply with already published data in healthy individuals.
Numerical simulation on MHD mixed convection of Cu-water nanofluid in a trapezoidal lid-driven cavity
Authors: Toghraie Davood
Published: November 2019

Optimization of the cooling processes by fluids in many industries such as power generation, transportation, machining, and electronics is very important. Heat transfer equipment to achieve higher efficiency, need to downsizing of the equipment, and increase the heat transfer rate per unit of surface. The aim of this paper is to investigate the effect of MHD mixed convection flow of Cu-water nanofluid in a trapezoidal lid-driven cavity with different tilt angles in a range of 0° to 60°. The cavity consists of the non-uniformly heated bottom wall, insulated top wall, and isothermal sidewalls. The governing equations of the flow by using the finite volume method and the SIMPLE algorithm have been numerically solved. The studies for the wide range of Richardson number (Ri) from 0.01 to 10, volume fraction of nanoparticles from 0.1% to 4% and Hartman number (Ha) from 0 to 40 in the steady-state have been done. Result in the form of streamline, vorticity and temperature contours for three geometry, local Nusselt number graphs for non-uniformly heated bottom surface and velocity profile on the vertical centerline of the cavity in different geometry have been investigated. The results show that the average Nusselt number on the non-uniformly heated bottom wall is dependent on dimensionless parameters and tilt angles. Also, applying a magnetic field, reduce the velocity profile changes, and using nanoparticles will cause increasing the Nusselt number.
Business Value and E-Commerce Adoption
Authors: Acheampong Otoo Anthony Akai , Zhiwen Li , Acheampong Otoo Charles Oduro , Opuni Antwi Maxwell
Published: November 2019

The clear differences between developing nations and developed nations have posed an enormous problem in trying to design a “one-size-fits-all” theory of Electronic Commerce (EC) adoption. Most prior studies have proposed that generalizing findings of developed countries to the context of developing countries are of worry (Rahayu & Day, 2015; J. Tan, Tyler, & Manica, 2007). Table 1 shows the ICT Development Index (benchmarking tools to monitor information society developments worldwide) of some countries that have hosted the earlier literature on EC International Telecommunications Unions (ITU, 2017). These statistics may well indicate that businesses in developed countries and developing countries vary with regard to information technology and EC context. The latest ITU report in 2017 on ICT Development Index, ranks Ghana as the 112th country regarding ICT development in 2016, which shows a slight decline in the ranking compared to 111th in 2015 (the IDI value increased from 3.75 in 2015 to 3.99 in 2016). This may suggest that Ghana does not have appropriate infrastructure for effective e-business compared to countries like Singapore, China and USA.
Experimental Monitoring of Vibration on Centrifugal Pump
Authors: Kadam M. P. , Shelke R. S
Published: November 2019

The main task of this Project was to summarize the reasons of turbo machine failure and a way of monitoring those causes during the operation of the turbo machine. Furthermore, the analysis of the results of Condition Monitoring (Vibration Monitoring) was explained with a practical experiment performed in the laboratory

The results of our measurement indicate a significant variation in vibration trend as a function of operating conditions. The experimental results demonstrated that the vibration monitoring rig modeled various modes of machine failure. Failure can be caused either by single phenomenon or simultaneous phenomenon. Such phenomenon are as follows:

Balancing Motor which can become unbalanced sometimes which will affect the measurement itself.
Parallel Misalignment (misalignment of pump and motor)
Blade pass and Vane pass
Vortex shedding
FEA Analysis for Modal, Random Vibrations
Validation by FFT
Base plate Design

Furthermore, it can be emphasized that based on my observation during the measurement, when the revolution number was approaching 1500 [RPM], the noise of the turbo machine would dramatically increase when the flow rate was at its maximum. Thus, we can indicate that the noise was as result of high vibration. However, with the same revolution number (rotational speed) but lower flow rates the noise was not that much.
Study of Production and Productivity of Sago Plant in East Kolaka District, Southeast Sulawesi Province, Indonesia
Authors: Asthutiirundu Prof. , Bulkis Sitti , Mujahidin Imam , Jamil M. H.
Published: November 2019

Optimal utilization of sago plants can provide large incomes to farm households. Generally in Indonesia sago is only used as a staple food for the daily life of the family as a companion to rice. However, some region in Indonesia uses sago as the main staple food source, such as in Maluku, Papua, parts of Sulawesi such as East Kolaka. The purpose of this study is to examine in depth the production and productivity of sago plants in the East Kolaka Regency. The study was conducted in the East Kolaka Regency of Southeast Sulawesi Province in 2018. The respondents of this study were 203 sago farmers. The study uses a quantitative approach with a combination of survey methods with quantitative and qualitative descriptive data analysis. The results showed that sago production in East Kalimantan in each year ranged from 119 sacks/ year - 363 sacks/ year or equivalent to 2,161 kg / yr-6,606 kg /yr. The highest average sago starch production is in the Poniponiki village, which is 6,606 kg /yr. While the lowest production is in the Ladongi village, 2,161 kg/ yr. The highest productivity was found in Alaaha village, which was 7.7 tons /ha/ yr while the lowest productivity was 2.5 tons /ha/ yr in Ladongi village. Sago plant productivity in East Kalimantan shows quite good productivity for the condition of sago cultivation that is still extractive tautology. This shows that when sago plantations are used in the improvement of sago plant technology in East Kalimantan, they will provide productivity far higher than current production.
浅谈电气自动化技术在变电站中的应用
Authors: 罗 鑫
Published: November 2019

我国现代化技术飞速发展,电气工程逐步实现了自动化控制,并且受到业内人士的广泛关注,在这种发展形势下,进行电气工程自动化技术应用的全面研究,对于社会的整体发展具有良好的价值。本篇文章主要就电气工程自动化技术实际应用情况进行分析,并提出合理化建议,旨在可以给相关人士带来借鉴。进行电气自动化技术在变电站中的应用的全面研究,实现自动化技术在变电站运行系统中应用系统的进一步改良,可以使得我国的电力产业获得更加广阔的发展空间和更加优良的发展前景。
H-ADCP在高坝洲水文站的在线流量测验的应用研究
Authors: 方 祯
Published: November 2019

为解决复杂水流条件下的流量测验问题,近些年来,以水平式声学多普勒流速剖面仪(H-ADCP)为代表的新型仪器设备在水文测验中得到了广泛应用。以高坝洲水文站为代表,根据H-ADCP性能及水文测验断面的实际情况,有针对性地进行分析研究,解决H-ADCP仪器的安装、适时水位(Z～t)的自动测报与应用、水位(Z)与断面面积(A)的关系、断面平均流速(V断面)与指标流速(u)的关系的率定、以及在线适时流量的取得等关键性技术问题。通过试验研究,较好地解决了应用H-ADCP实现高坝洲水文站的流量测验问题。
Novos horizontes da Cardio-Oncologia
Authors: Oliveira Gláucia Maria Moraes de , Malachias Marcus Vinicius Bolivar
Published: November 2019

As doenças crônicas não transmissíveis (DCNT) foram responsáveis por 71% de um total estimado de 57 milhões de mortes ocorridas no mundo em 2016, com 80% das mortes ocorrendo em países de baixa e média rendas. Estimativa semelhante ocorreu no Brasil, com as DCNT respondendo por 74% dos óbitos, e com predomínio das doenças cardiovasculares (DCV), que correspondem a aproximadamente um terço dos óbitos, seguidas das neoplasias, com cerca de um sexto dos óbitos, doenças obstrutivas crônicas, e diabetes. As DCNT partilham fatores de risco comuns, e cabe ressaltar que a abordagem combinada das DCNT e de seus fatores de risco foi considerada um pacote custo-efetivo pela Organização Mundial da Saúde (OMS), requerendo investimento equivalente a 1 dólar per capita nos países de baixa renda, 1,5 nos de baixa e média rendas, e 3 dólares nos de média e alta rendas.
Indigenous Youth Development through Sport and Physical Activity: Sharing Voices, Stories, and Experiences
Authors: Bruner Mark W. , Lovelace Robert , Hillier Sean , Baillie Colin , Bruner Brenda G. , Hare Kathy , Head Christine , Paibomsai Aaron , Peltier Kieran , Lévesque Lucie
Published: November 2019

Recent research has highlighted the cognitive, physical, emotional, and spiritual benefits of sport and physical activity participation for Indigenous youth (McHugh, Coppola, & Sinclair, 2013; Hanna, 2009; Lavallée, 2007). Despite the importance of Indigenous peoples participating in sport and physical activity (e.g., Forsyth & Giles, 2013), the meaning of youth development in this context is not well understood. The purpose of this research was to understand Indigenous youth development within the context of sport and physical activity through the voices, stories and experiences of Indigenous youth. Participants were 99 Indigenous youth (52 males and 47 females) between the ages of 15 and 25 years who took part in one of 13 sharing circles. Each of the sharing circles was facilitated by a trained Indigenous youth with guidance from an Elder/Traditional person. A Two-Eyed Seeing approach (Bartlett, Marshall, & Marshall, 2012) was used to analyze the sharing circle discussions. This analytical process involved an initial inductive thematic analysis of the transcribed verbatim data followed by an Indigenous symbolic visual analysis of emerging themes using the Medicine Circle. Results revealed that involvement in sport and physical activity impacted Indigenous youth physically, cognitively, and emotionally. The spiritual impact was not as evident. Findings from the research will inform the development of a measure of Indigenous youth development within sport and physical activity settings.
Unseen Contributor to the Tensions in Georgia`
Authors: Liparteliani Vladimir
Published: November 2019

The purpose of the research is to examine importance of Georgia’s current relations with its neighboring Russia and Azerbaijan and to estimate risks that deterioration of these relations can bring to Georgia’s economy. Of particular interest is to understand who stands behind the tensions happened in Georgia in the run-up to the tourist season of 2019 or at least to figure out possible motives behind the events. Interdependence of the states is analyzed through historical review of their relations and estimation of their current mutual interests. Considering risks and aspirations of the sides in the tensions, the motives behind are suggested. The data received depicts that none of these tensions were initiated by Georgia following its interests, on the contrary, its ruling party’s most visible achievement had been the ability to maintain positive and beneficial relations with both Russia and Azerbaijan. Thus, the Georgian government considered to be a victim in this case. The paper concludes that Georgian government is unable to react on provocations in a timely fashion due to absence of agreement in the ruling party and being quite fragile for outside forces that try to influence the country’s political processes. Unless Georgia manages to build more interdependent or less dependent relations with superpowers, it will be unable to avoid repetition of such manipulations.
Selection of the Best Lecturers using the AHP (Analytical Hierarchy Process) and TOPSIS (The Technique for Order of Preference by Similarity to Ideal Solution): Case Study of STMIK Insan Pembangunan
Authors: Purbaratri Winny , Moedjiono Moedjiono , Alam Moch. Fajar Purnomo
Published: November 2019

STMIK Insan Pembangunan is a College that was established in 1990, located in Tangerang Regency. Supported by 41 Lecturer staff. Lecturers have the position as professional staff at the higher education level who are appointed in accordance with the laws and regulations. Lecturers are educators who provide a number of knowledge to students in universities or universities. The best lecturer selection system is used to support learning and teaching activities in the campus so that students are competent in the field of concentration taken. So it is needed teaching staff or lecturers who are competent in their fields, in this case to meet the criteria of the competent lecturer is needed a system that supports in this case deciding which lecturers are considered the best. The process of selecting the Best Lecturers in the current system is that there is a shortage that takes a long time to process the results of the questionnaire data and only uses one of the criteria of the Tridarma of Higher Education, namely Education and Teaching. So that the resulting decision is not yet valid. In this study a Decision Support System (DSS) will be made where the decision support system can help a person in making accurate and well-targeted decisions. The method used is AHP to calculate the weight of each criterion and TOPSIS to rank each alternative based on each criterion. The results obtained in this study are a system that is able to produce the best rank of lecturers in STMIK Insan Pembangunan.
Business Intelligent Method For Academic Dashboard
Authors: Destiandi Niki , Hermawan Aditiya
Published: November 2019

Business Intelligence Lifecycle is a method for developing effective business intelligence (BI) decision support applications such as the Academic Dashboard. There are six steps in the BI life cycle from the beginning to implementation such as Justification, Planning, Business Analysis, Design, Construction, and Deployment, where each step is developed to be more detailed in accordance with BI's environmental needs (L. T. Moss). Management of tertiary institutions in Indonesia requires appropriate and fast academic reports that make it possible to make strategic decisions and in order to improve the quality of education. Academic evaluations can be presented with the dashboard being easy for decision making. The dashboard is a page that displays graphics as a KPI from an organization and provides everything needed to make key research results [4]. Problems that occur there are a lot of academic data that is stored but when turning it into a report at the time of evaluation academic activities are difficult and require a long time and require monitoring, evaluation and measurement tools that can measure the performance of universities. The Business Intelligence Lifecycle can be used to provide information to produce high resolution by adding KPI components.
Prototype of Warehouse Automation System Using Arduino Mega 2560 Microcontroller Based on Internet of Things
Authors: Kurnia Yusuf , Sie Jeksen Li
Published: November 2019

This research aims to collaborate between automation systems involving 3 main components namely Actuators, transducers / sensors, and microcontrollers are also implementations of IoT that are implemented in accessing, controlling, supervising, and monitoring all activities that are generally related to warehousing as well as increasing the efficiency and security of those who do not have the authority to access the room. In This research the hardware used as a control system is an integrated circuit board ARDUINO MEGA 2560 based on ATMega2560 Chipset that has 13 I / O pins for analog pins and 40 digital pins, the selection of that number of I / O pins as anticipated if this design will be developed further by using instruments that require hardware to support operational activities in specific warehouses of general, ESP8266 as a module device used for IoT communication using the Blynk application on Smartphone devices, and the RFID Mifare RC522 module used to access the room if there is an internet connection failure
Sales Analysis Using the Forecasting Method
Authors: Pataropura Amesanggeng , Riki Riki , Saputra Ariadi
Published: November 2019

Sales Analysis Using Forecasting Method aims to improve effectiveness and efficiency that facilitates companies in business transaction processes, improve the delivery of information quickly, accurately, and transaction data well and minimize errors. The method used in the presentation of this scientific work is by using a forecasting method which helps determine the approximate stock of goods to come. With 3 forecasting modules are: Moving Average, Weighted Moving Average, Trend Projection is used to perform the forecasting process of the upcoming stock of goods. Can solve problems that exist in the current system so that it can help in improving its services by calculating the stock and helping by determining the average data that has been linked to the forecasting module whose results can be concluded through reports per period. It can be concluded that the results of implementing this new system can help companies in recording each transaction that occurs becomes more efficient and effective, so that it can overcome the problems that exist in the current system. With this we can predict the current flow of goods that have been calculated based on 3 (three) modules that have connections with the system
Extraction Opinion of Social Media in Higher Education Using Sentiment Analysis
Authors: Tarigan Thomas Edison , Buwono Robby C , Redjeki Sri
Published: November 2019

The purpose of this research is to extract social media Twitter opinion on a tertiary institution using sentiment analysis. The results of sentiment analysis will provide input to universities as a form of evaluation of management performance in managing institutions. Sentiment analysis generated using the Naïve Bayes Classifier method which is classified into 4 classes: positive, normal, negative and unknown. This study uses 1000 data tweets used for training data needs. The data is classified manually to determine the sentiment of the tweet. Then 20 tweet data is used for testing.

The results of this study produce a system that can classify sentiments automatically with 75% test results for sentiment, some obstacles in processing real-time tweets such as duplicate tweets (spam tweets), Indonesian structures that are quite complex and diverse.
Analisa Rasio Keuangan Garuda Indonesia Airlines, Singapore Airlines Dan Thailand Airlines Dengan Uji Non-Parametrik (Periode: 2010 – 2014)
Authors: Wibowo Susanto , Sutandi Sutandi
Published: November 2019

Tujuan penelitian ini membandingkan kinerja keuangan maskapai penerbangan antara; Garuda Indonesia Airlines, Singapore Airlines dan Thailand Airlines dengan indikator analisa rasio keuangan dan indikator Du Pont System serta menggunakan uji statistik Kruskal-Wallis dan Mann-Whitney U. Data series laporan keuangan diambil dari tahun 2010-2014 berasal dari website masing-masing, bank sentral dan pasar saham yang ada dinegara masing-masing.Pengujian hipotesis mencakup analisa rasio keuangan; likuiditas (current rasio atau CR), aktivitas (total asset turn over atau TATO), solvabilitas (debt rasio atau DR), profitabilitas (net profit margin atau NPM) dan Du Pont System (return on investment atau ROI dan return on equity atau ROE).Hasil penelitian menunjukan perbandingan rasio keuangan Garuda Indonesia Arilines, Singapore Airlines dan Thailand Airlines ada yang berbeda signifikan dan ada yang tidak signifikan. Rata-rata rasio keuangan Garuda Indonesia Airlines yang lebih baik pada net profit margin (NPM) saja sedangkan current ratio (CR), total asset turn over (TATO), debt rasio (DR), return on investment (ROI) dan return on equity (ROE) kurang baik.
Analisis Pengaruh Penjualan Eceran, Pendapatan Sewa Terhadap Laba Komprehensif pada PT. Mitra Adiperkasa, Tbk
Authors: Kurniawan Kito
Published: November 2019

Penelitian yang bertujuan mengetahui pengaruh penjualan eceran, dan pendapatan sewa terhadap perolehan laba komprehensif periode keuangan 2008 s/d 2012. Metode penelitian yang digunakan adalah deskriptif kuantitatif pada perusahaan PT. Mitra Adiperkasa, Tbk). Penjualan eceran (X1) berpengaruh signifikan terhadap laba komprehensif (Y). Berdasarkan pengujian nilai r2 yakni R square sebesar 0.757 berarti, variabel dependen (Y) dipengaruhi oleh variabel  independen (X1) sebesar 75.7%. Pendapatan sewa (X2) tidak berpengaruh signifikan terhadap laba komprehensif (Y). Berdasarkan pengujian nilai r2 yakni R square sebesar 0.204 berarti, variabel dependen (Y) dipengaruhi oleh variabel  independen (X2) sebesar 20.4%. Berdasarkan pengujian koefisien determinasi menghasilkan nilai r2 yakni R square sebesar 0.775 berarti, variabel dependen (Y) dipengaruhi oleh variabel  independen (X1), (X2) sebesar 77.5%. Kesimpulan bahwa PT. Mitra Adiperkasa, Tbk terdapat pengaruh signifikan penjualan eceran dan grosir terhadap laba komprehensif periode laporan keuangan
Analisa Konjoin : Upaya Stimulus Konsumen Untuk Mengkonsumsi Cemilan Franchaise Makanan Jagung Daily Fresh “Lapak Cinsong” Di Vihara Dhamma Bhakti, Jawaringan, Kab-Tangerang
Authors: Santosa Sonny
Published: November 2019

Sudah menjadi salah satu tugas sebagai pengajar Studi Kelayakan Bisnis untuk turut memberikan sebuah rekomendasi yang bersifat alternatif bagi mereka yang baru akan/telah memulai usahanya, tanpa perencanaan dan kajian (studi) kelayakan yang baik, maka suatu usaha dapat dipastikan akan sia-sia atau merugi, padahal salah satu tujuan perusahaan/usaha didirikan ialah untuk mendapatkan keuntungan/profit. Sebuah penilaian layak/tidaknya suatu usaha/bisnis tidak hanya dilakukan sejak munculnya ide/gagasan, tetapi juga bagaimana cara menganalisis ide/gagasan yang dikaitkan dengan peluang pasar sasaran sehingga dapat ditarik satu keyakinan yang mantap bahwa ide/gagasan bisnis yang akan dijalankan tergolong rasional dari sudut pemasaran. Dengan demikian tujuan penelitian ini dilakukan adalah untuk memberikan sebuah upaya stimulus konsumen untuk mengkonsumsi cemilan franchaise makanan jagung daily fresh “lapak cinsong” di Vihara Dhamma Bhakti, Jawaringan, Kab. Tangerang, Analisa konjoin dianggap tepat oleh peneliti untuk melihat hasil pengolahan dari survei awal pada atribut produk di “lapak cinsong”. Ada tiga jenis atribut rasa yang diuji dalam penelitian ini yaitu atribut rasa keju, coklat, pedas. Kemudian atribut harga dengan tingkatan Rp. 2.000, Rp.3.500 dan Rp. 5.000. terakhir atribut cup dengan tingkatan 120 ml, 160 ml, dan 220 ml. berdasarkan hasil analisis konjoin didapat kesimpulan bahwa responden lebih menyukai rasa pedas dengan nilai utility sebesar 0,255 dengan model analisis conjoin ri = -0,299x11 + 0,043x12 + 0,255x13 – 0,111x21 – 0,222x22 – 0,333x23 – 0,091x31 – 0,182x32 – 0,273x33 + 11,404 tetapi tidak minat untuk mengkonsumsi cemilan franchaise makanan jagung daily fresh “lapak cinsong” di Vihara Dhamma Bhakti hal ini berdasarkan pada hasil uji korelasi Pearson’s R dan Kendall’s tau 0,190 dan 0,464 (diatas 0,05), hal ini menandakan bahwa responden lebih menyukai cemilan variasi lainnya dibandingkan dengan hanya cemilan jagung yang hanya memiliki 3 varian rasa saja.
Pengaruh Budaya Organisasi, Komunikasi, dan Lingkungan Kerja Terhadap Kepuasan Kerja Karyawan pada Direktorat Jenderal Bimbingan Masyarakat Hindu Kementerian Agama Republik Indonesia
Authors: Andy Andy , Sintya Dwi S Ida Ayu Made
Published: November 2019

Penelitian ini adalah bertujuan untuk mengetahui seberapa jauh budaya organisasi, komunikasi, dan lingkungan kerja berpengaruh terhadap peningkatan kepuasan kerja pada Direktorat Jenderal Bimbingan Masyarakat Hindu Kementerian Agama Republik Indonesia. Penelitian yang dilakukan adalah dengan menyebarkan kuesioner, sedangkan untuk metode penelitian yang dilakukan adalah dengan menggunakan metode deskriptif. Dalam melakukan penelitian ini penulis menggunakan Analisis koefisien korelasi, Analisa regresi linier berganda dan uji F serta uji t. Dari hasil analisis penulis memperoleh hasil sebagai berikut. Dari analisis linier berganda diperoleh persamaan Y = 3.327 + 0.711X1 + 0.292X2 + 0.210X3 dimana artinya setiap peningkatan atau penurunan budaya organisasi  sebesar 1 point maka kepuasan kerja akan mengalami peningkatan atau penurunan sebesar 0.711. Dari hasil uji F model didapat nilai 384.130 dimana nilai tersebut lebih besar dari F tabel yaitu 3.11 dengan demikian Ho ditolak dan Ha diterima. Pada uji t diketahui hasil bahwa t hitung untuk budaya organisasi (X1) adalah sebesar 9.364 , hasil komunikasi (X2) adalah sebesar 3.922, dan untuk lingkungan kerja (X3) adalah 3.372.
Eficiência das larvas de besouro coprófago na compostagem do esterco de coelho
Authors: Pereira Claudete Martins da Silva , Antunes Luiz Fernando De Sousa , Soares Milene Da Silva , Aquino Adriana Maria de , Leal Marco Antonio De Almeida
Published: November 2019

As famílias de coleópteros atuam na fragmentação da matéria orgânica em decomposição (restos vegetais, madeira podre, palha, esterco, entre outros), participando da ciclagem de nutrientes e contribuindo para a melhoria da fertilidade e estrutura do solo. O presente trabalho teve o objetivo de avaliar a eficiência das larvas de besouro da subfamília Cetoniinae como uma nova alternativa no processo de decomposição do esterco de coelho, comparando os atributos físicos, físico-químicos e químicos do Cetoniinaecomposto com o esterco de coelho decomposto por minhocas e o esterco compostado naturalmente. O experimento foi implantado em galpão coberto da Embrapa Agrobiologia, no município de Seropédica (RJ), em um delineamento experimental inteiramente casualizado com três formas de incubação: com minhocas (T1), com larvas de besouro (T2) e sem larvas e sem minhocas (T3), com quatro repetições. As coletas de amostras do material para análise foram realizadas no início da incubação (tempo 0) e aos 30, 60 e 90 dias, sendo avaliados pH e emissões potenciais de CO2 e de NH3 como indicadores de estabilidade, e aos 90 dias foram analisadas as seguintes variáveis: condutividade elétrica (CE), pH, teores de nitrogênio, fósforo, potássio, cálcio e magnésio, e substâncias húmicas. Os compostos de esterco de coelho produzidos por larvas de Cetoniinae (Cetoniinaecomposto), por minhocas (vermicomposto) e esterco compostado, não apresentaram diferença significativa para a maioria das características químicas e físicas, constatando-se a estabilização dos compostos produzidos por minhocas e larvas aos 90 dias, medida pelas emissões de CO2 e de NH3. Destaca-se a decomposição realizada pelas larvas de besouro, a qual apresentou a menor emissão de NH3 ao longo do período de incubação, demonstrando que as larvas podem ser uma nova alternativa a compostagem do esterco de coelho.
Factors Affecting the Capital Expenditures in Bali Province
Authors: Dewi Ni Luh Putu Sandrya , Dicriyani Ni Luh Gede Mahayu
Published: November 2019

Capital Expenditure is budget expenditure used to obtain or add value to assets that benefit more than one accounting period. Infrastructure development in an area is reflected in the allocation of effective capital expenditure from an area. The purpose of this researce is to determine the factors that influence capital expenditure in the province of Bali. The object of this study is the report on the realization of the regional expenditure income budget APBD in the District/City in the Province of Bali in the Fiscal Year 2013-2017. The data analysis technique used is multiple linear regression analysis. The results of this study indicate that regional original income (PAD) has a significant positive effect, balancing funds have no effect and the surplus financing budget (SILPA) effect on capital expenditure negatively in the province of Bali.
KARAKTERISTIK FISIK dan PRODUKSI KELAPA SAWIT (Elaeis guineensis Jacq.) pada TIGA AGROEKOLOGI LAHAN
Authors: Nasamsir Nasamsir , Indrayadi Mei
Published: November 2019

AbstractThis research aims to know the physical characteristics and the palm oil production on a variety of land suitability. Randomized block design by survey method was used in this research that had been carried out in society’s enterprise. The research object was the palm oil crop cultivated in the lowlands (0-100 m above sea level), moderate land (100-500 m above sea level), and the highland (>500 m above sea level). The plant wich is taken as a sample is a plant which was 10 years old (already production). The villages in the survey, set in accordance with the height. The observed variables in this study i.e.; the circumference of the trunk, tall trunk, leaf stem length, color and thickness of the leaf, heavy of fresh fruit bunches, the age of starting production, production and productivity. Other observed data is temperature and soil acidity. To see the difference between production and productivity of palm oil on three ecology types of land, observed data were analyzed using analisys of varians that followed by Duncan test (α = 5%). The land suitability has significant on physical characteristics and palm oil production. Palm oil production in moderate land was significantly higher than those in both the high and lowland. Keywords; crop production, physical characteristics, land suitability, palm oil. AbstrakPenelitian ini bertujuan untuk mengetahui karakteristik fisik dan produksi kelapa sawit (Elaeis guineensis Jacq) pada berbagai agroekologi lahan. Percobaan dirancang menggunakan Rancangan Acak Kelompok (RAK), dilakukan di kebun rakyat dengan metode survey. Objek yang diteliti adalah tanaman kelapa Sawit yang dibudidayakan di dataran rendah (0-100 m dpl), dataran sedang (100-500 m dpl_, dan dataran tinggi (>500 m dpl). Tanaman yang diambil sebagai sampel adalah tanaman yang berumur 10 tahun (telah berproduksi). Desa-desa yang di survey, ditetapkan sesuai dengan ketinggian tempat. Peubah yang diamati dalam penelitian ini yaitu ; lingkar batang, tinggi batang, panjang pelepah, warna dan ketebalan daun, berat tandan buah segar, umur mulai berproduksi, produksi dan produktivitas, serta tindakan agronomi. Data lain yang diamati adalah suhu dan kemasaman tanah. Untuk melihat perbedaan produksi dan produktivitas kelapa sawit pada tiga jenis agroekologi lahan, data hasil pengamatan lapangan dianalisis menggunakan analisis ragam yang dilanjutkan dengan uji Duncan dengan α 5%. Agroekologi lahan berpengaruh nyata terhadap karakteristik fisik dan produksi kelapa sawit. Produksi tanaman kelapa sawit di daerah dataran sedang lebih tinggi dan berbeda nyata dengan produksi tanaman kelapa sawit daerah dataran tinggi dan daerah dataran rendah. Kata Kunci ; produksi tanaman, karakteristik fisik, kesesuaian lahan, kelapa sawit
ANAISIS EKONOMI USAHATANI NILAM DIDESA MUARA MADRAS KECAMATAN JANGKAT KABUPATEN MERANGIN PROVINSI JAMBI
Authors: Kemala Nida , Wulandari Siti Abir , Julizendri Rahmat
Published: November 2019

AbstractThe research was conducted in Muara Madras Village, jangkat District, Merangin regency. The sampling method applies a simple random sampling, so the total samples are 31 farmers. The purpose of this study is to determine the description of “nilam” farming activity,  to know farmer’s  income, and feasibility of this farming. By knowing the farming description, earnings and its feasibility is expected that various policies can help the farmer to increase their welfare. The results showed that “nilam”farming in Muara Madras village, on the average land area of 0.53 Ha has an income of Rp. 792.987/year that equivalent to Rp. 1.496.201 /Ha/Year and total  cost showed Rp. 710.658 / Year, this is equivalent to Rp. 1.340.864 /Ha/Year. Nilam  price average  is 7.000/kg with an average production of 215/year so the Revenue is Rp. 1.503.645/Year that equivalent to Rp. 2.837.066 /Ha/Year. Gross B/C ratio showed 2.13 so that it can be interpreted in “nilam”farming in Muara Madras Village, Jangkat District, Merangin regency was feasible to be developed.Keyword : Nilam, Gross B/C ratio, income, feasibility, farmer. AbstrakPenelitian dilaksanakan di Desa Muara Madras Kecamatan Jangkat Kabupaten Merangin. Metode penarikan sampel dilakukan dengan cara sengaja (purposive) dengan menjadikan 100 RTP menjadi 31 RTP petani sampel dengan cara (Simple random sampling). Tujuan penelitian ini untuk mengetahui gambaran usahatani nilam dan mengetahui pendapatan, kelayakan usahatani nilam.  Dengan mengetahui gambaran, pendapatan dan kelayakan usahatani nilam diharapkan kebijakan berbagai pihak dapat membantu perekonomian keluarga petani dan meningkatkan kesejahteraan masyarakat di daerah penelitian. Hasil penelitian menunjukkan hasil perhitungan pendapatan usahatani nilam di Desa Muara Madras memiliki pendapatan sebesar Rp. 792.9873/Tahun pada rata-rata luas lahan 0,53 Ha yang setara dengan Rp. 1.496.201/Ha/Tahun. Biaya total rata-rata Rp. 710.658 / Tahun yang setara dengan Rp. 1.340.864 /Ha/Tahun. Harga nilam rata-rata Rp7000/Kg, dengan rata-rata produksi 215 Kg/Tahun sehingga penerimaan per tahun adalah Rp. 1.503.645 dan hal ini setara dengan Rp. 2.837.066 /Ha/Tahun. Sedangkan  Gross B/C Ratio sebesar 2,13. Sehingga dapat diartikan bahwa usahatani nilam di Desa Muara Madras Kecamatan Jangkat Kabupaten Merangin layak untuk dikembangkan.Kata kunci : Nilam, Gross B/C ratio , Pendapatan, Kelayakan, Petani
Sociedad, educación y tecnología
Authors: Calle Álvarez Gerzon Yair
Published: November 2019

La tecnología sigue progresando y ocupando un espacio privilegiado en las comunidades. Se puede observar modificaciones cuando se transforman o se crean recursos para el apoyo de las funciones del hombre en el trabajo o en la sociedad. En la escuela, también, las tecnologías tienen presencia y la adaptación de las mismas a los procesos de enseñanza y aprendizaje trae consigo cambios y actualizaciones. Esta ponencia tiene como objetivo exponer algunas reflexiones sobre la relación entre sociedad, educación y tecnología. Se esbozan algunos aspectos de corte conceptual y aproximaciones prácticas a la escuela. Para su desarrollo se inicia con un contexto general de las relaciones entre sociedad, educación y tecnología, luego se aborda el papel de la escuela en la sociedad digital, y finalmente, se plantean unas consideraciones sobre los aspectos claves tratados a lo largo de la ponencia y sus aportes a la investigación sobre educación y tecnologías de la información y la comunicación.
Desarrollo y validación de un modelo cero dimensional de dos zonas para el análisis de la combustión en motores de encendido provocado
Authors: Heredia Quintana Sebastián , Morales-Rojas Andres David
Published: November 2019

The growth of the automotive fleet in cities and the imminent depletion of traditional hydrocarbon deposits mean that research in the field of internal combustion engines focuses on generating strategies and developing technologies that allow a reduction in fuel consumption and pollutants emissions. The use of numerical models for simulation is an important tool for both researchers and designers as they allow to approach the performance of the engines under certain operating conditions without incurring in the expense involved in experimental studies and allow analyzing multiple phenomena that occur during combustion that are not easily evaluable from experimental measurements. In this study, a zero-dimensional two zones model which separates the combustion chamber into burned and unburned gases was developed seeking to study the combustion process in ignition engines using gaseous renewable fuel (biogas), using the Law of Wiebe and the chemical equilibrium to simulate the combustion process and the Woschni's semi-empirical correlation for heat transfer. The model is calibrated with information obtained from a high compression ratio (15.5: 1) engine of the combustion and thermal machines laboratory of the University of Antioquia. The main variables of combustion and engine performance (heat release rate, maximum pressure, indicated work, among others) were compared with the results of the model, as well as the emissions generated from CO and NO. There are low errors between the experimental values predicted by the model, with errors less than 10% for the main variables, except for the indicated work, with errors of 27%, and errors between 18% and 49% for the generated emissions, obtaining the highest errors as the degree of load of the motor increases.
石化工程建设行业集成模块化预制
Authors: 潘 崇军
Published: November 2019

近年国内外石化建设领域发展迅速，国内七大石化基地快马加鞭落实，民营企业大炼化规划设计超前、建设工期之短屡创世界之最。早日建成投产见效益倒逼工期压缩，工期紧、任务重、安全形势严峻呈“泰山压顶”之势，成为工程建设行业急需克服的难题。普通的“塔器灯亮”、简单的结构框架模块化施工组织模式已经不能满足现代工业化工程建设，大型集成模块已被越来越多的国内外工程采纳，单纯考虑“降低工程建设成本”逐步被“早日投产见效益”的大收益理念代替。大型模块化施工模式所带来的工程进度、质量、安全、大成本等各方面综合效益明显，必将成为国内外大型石化建设行业的发展新趋势。
成品油库雨季进度管理分析
Authors: 李 树松
Published: November 2019

东莞地区与重庆地区均是南方多雨地区，每年持续雨季较长，论文结合东莞油库施工经验和正阳油库施工经验，从项目前期施工策划、施工准备、土建以及安装等主要施工阶段容易出现的问题和典型做法出发，结合实际案例对成品油库的雨季进度管理进行分析。总结出相关的应对措施，以起到对其他项目借鉴的意义。
遥感在摄影测量中的重要价值研究
Authors: 詹 娜
Published: November 2019

近年来，随着社会经济水平的发展进步，科学技术水平逐渐提高。就工程测量领域来说，现代测量方法、技术都不断实现多应用发展。对任何一项工程的施工来说，测量起到重要作用，是确保工程顺利实施的重要标准。摄影测量法是一种行之有效的测量方法，很大程度上提高了测量的准确性；而遥感技术在摄影测量中起到了关键的作用。分析了遥感技术应用于摄影测量的主要优势，然后介绍了摄影测量的现状，最后对遥感摄影测量的应用加以描述，旨在使人们对遥感技术有一定的了解，对摄影测量法有新的认识，从而更好地帮助人们完成摄影测量。
室内精装修工程设计管理分析
Authors: 袁 利超
Published: November 2019

社会经济的快速发展为房地产业的发展提供了良好的机遇，房地产业高调崛起，并逐步实现了住宅产业化目标。生活质量的提高使得人们对生活的追求不仅仅只是停留在物质层面，转而对美好事物的追求更加强烈。为此，建筑室内精装修逐渐被接受和普及，这也从侧面决定了精装修工程的设计管理尤为重要。基于此，就从建筑室内精装修工程设计管理展开分析。
浅谈高、低应变法在桥梁桩基检测中的应用
Authors: 潘 凡厚
Published: November 2019

桥梁桩基检测是工程质检的必要环节，该项检测在现代普遍采用高、低应变法来实现。本文为了了解高、低应变法在桥梁桩基检测当中的应用，将对两种方法的基本原理、应用流程进行分析，通过分析可知该方法在检测中的特征表现，例如如何取值、取值如何判断等，由此即可得知桥梁桩基检测结果。
城市地铁盾构拆解车架分体始发施工技术
Authors: 柏 涛
Published: November 2019

随着我国地铁建设的快速扩张，受各地不同条件的限制，地铁车站难以做到完全标准化。因地铁车站的设置需要考虑周边建构筑物和环境影响，难免出现不具备盾构整体始发条件的车站。文章以深圳轨道交通14号线7工区朱坑风井盾构始发为例，与大家讨论盾构施工拆解车架分体始发技术以供交流。该技术能有效节省工期，增加安全系数。
高速公路隧道机电施工常见问题与解决对策分析
Authors: 汪 静
Published: November 2019

高速公路隧道机电工程安装涉及机电系统、照明系统、通风系统、消防安全系统等多项内容，具有工程量大、工期短、施工工艺复杂，机电工程施工技术和质量要求高等特点，其整个隧道机电工程又包含很多系统，比如照明系统、通风系统、消防系统、监控系统和供配电系统，每一个系统的施工质量都影响隧道机电工程的质量，进而影响整个高速公路的质量，由于高速公路隧道机电施工系统比较复杂，对质量的要求比较高，因此加强高速公路隧道机电施工管理势在必行。结合高速公路隧道机电工程的特点，总结了在高速公路隧道机电施工管理中的经验与体会。
浅论建筑工程管理的影响因素及对策
Authors: 杨 华峰
Published: November 2019

在社会快速发展的影响下，使得建筑行业得到了较好地发展。现如今，人们对建筑工程管理工作越发的重视，良好的工程管理工作能够为建筑项目各项施工工作的按部就班的进行创造良好的基础。建筑工程施工工作具有一定的复杂性，并且参与部门较多，如果不能针对这些部门实施统一管控，势必会导致工程施工工作出现停滞的情况。在建筑行业快速发展的同时，也加剧了整个行业内部的竞争，要想保证施工单位长期稳定发展，最为重要的就是需要结合实际情况，制定切实可行的管理制度，从根本上对施工质量加以保证，这样才能实现既定的目标。这篇文章主要围绕对建筑工程管理工作造成影响的因素实施综合分析，希望能够对工程管理工作健康稳定发展有所助益。
钢筋混凝土桥梁全过程试验检测工作重点
Authors: 邵 长柱 , 张 国栋 , 朱 纪相
Published: November 2019

我国在桥梁建设方面已经跨入世界先进行列，成为桥梁大国。因此围绕桥梁进行的各项相关质量检测就显得十分重要。开展科学、合理桥梁试验检测，对推动我国桥梁建设水平，确保桥梁工程施工质量，提高投资效益，提升运力，延长使用寿命，保障出行安全等方面都具有十分重要的现实意义。
后张预应力桥梁施工中预应力张拉的质量控制
Authors: 王 涛
Published: November 2019

后张预应力桥梁工程中，预应力张拉是施工应重点关注的因素，施工中必须保障张拉质量达标。而实际上，因为施工步骤繁琐、专业要求较高，所以张拉质量经常出现问题，导致工程质量不佳。就这一点，文中将分析后张预应力桥梁中预应力张拉常见问题，并提出相应处理措施，最终阐述了其他质量控制策略。
化工工程施工中现场管理方式研究
Authors: 王 丹
Published: November 2019

化工工程建设工作的效果与企业的稳定发展存在密切的关联，工程建造的各个环节的的质量都会对工程整体质量造成一定程度的影响，所以需要施工企业加大力度来加强施工现场管理工作的实施，针对施工中出现的各类问题制定有效的解决和预防方案。现如今我国在化工领域的投入相对较多，并且表现出了不断增长的趋势。这一现象的出现，主要是因为化工行业的发展与国家综合国力的提升具有非常重要的影响。化工工程与普通的建筑工工程之间是存在本质的区别的，其不但需要大量的资金支出，并且在工程施工中要对所有的化工生产工作进行综合分析，因为化工工程施工工作往往需要运用到大量的前沿生产技术，并且会使用大量的具有特殊性质的施工物料，所以对施工技术水平要求较高。一般情况下，化工工程施工规模较大，并且难度系数较高，在对施工物料和设备加以运用的时候，务必要对各项操作加以规范要求，加大力度落实安全管理工作，为化工工程施工工作按部就班的进行创造良好的基础。
石油化工总承包工程项目施工现场物资管理研究
Authors: 孙 鹏杰
Published: November 2019

随着我国经济的飞速发展，石油化工项目投资建设逐年增加，目前越来越多的石化项目均采用EPC模式，虽然我国石油化工EPC项目起步较晚，在重视设计采购施工前提下往往忽略对施工现场物资管理工作的科学化，精细化。笔者将注重分析石油化工项目的总承包施工现场物资管理问题，并提出石油化工项目总承包施工现场物资管理加强的措施方法。
探讨建筑工程管理与施工质量控制的有效策略
Authors: 张 龙
Published: November 2019

工程建设过程中，做好工程管理及质量控制工作对整体工程项目有着重要的影响。由于建筑工程建设过程中涉及到的环节较多，因此会受到不同因素的影响，所以应采取有效的措施做好工程管理及质量控制工作，进而促进建筑企业的发展。
某森林公园水环境治理施工要点探析
Authors: 陈 磊
Published: November 2019

近几年，生态环境建设水平不断提高，各地区都积极投入到生态环境建设工程项目中，但在水环境治理施工上还存在一定的问题。基于此，文章主要针对森林公园水环境治理施工进行分析，在简单了解国家森林公园水环境现状后，详细分析造成水环境恶化的原因，有针对性的提出了具体的对策，包括：创新战略、新区建设、提高重视等，并且以上海共青森林公园为例，对水环境治理施工进行全面的研究。
高速公路施工期水土流失影响因素及其防治措施
Authors: 武 坤
Published: November 2019

高速公路的工程项目建设属于基础设施建设中的一个重要组成部分，也是国家重点开发建设的交通工程项目，高速公路网络不仅方便了人们的出行，对于区域的经济的发展也是非常重要的。因为高速公路的建设涉及到的区域范围很广，同时，因为我国国土面积太大，多种气候类型和地质地貌相互交叠，使得高速公路施工建造区域的的地形和气候条件都非常复杂，所以在施工建造过程中需要注意到很多施工技术的应用细节，尽可能的减少高速公路建造施工对于周边自然环境和地质结构的破坏。因此，在高速公路建设阶段，做好水土保持的工作对保护项目周边环境起着极为重要的作用。根据相关工程项目建设施工的法律法规的有关规定，开发和建设高速公路的项目必须制定适当的土壤和水资源保护计划，但在工程实践中，可以实施永久性的土壤和水资源保护措施，并且在施工过程中必须注意不能对土壤及水资源形成污染。但是，实际的高速公路建造施工的情况来看，一些建筑企业通常不采取一些适当的控制措施来进行水土流失的防控，所以在高速公路建造施工的过程中导致水土的大量流失。如果在工程项目建造施工的管理工作中不采取有效的监管和控制措施，将使得工程建设对周边环境产生严重的破坏。因此。有必要在高速公路建设过程中通过严格有效的土壤和水资源保护的制度对施工行为进行规范，并在高速公路建设过程中严格落实高质量的水土保持手段，在高速公路项目建设的同时，做好水土资源的保护。
谈公路工程安全生产管理存在的问题及解决方案
Authors: 雷 辉
Published: November 2019

公路工程是基础设施的重要组成部分，关系到居民的生活和社会经济的发展，如何保证公路工程的安全生产，成为了相关领域重点研究的课题。文章通过对公路工程安全生产管理存在的问题进行分析，并在此基础上提出完善安全生产管理体系、增加安全设施投入、重视在建工程管理、应用现代技术和设备以及改善施工环境等建议，希望对提高公路工程的安全性有所帮助。
道路与桥梁施工建设管理的技术要点探析
Authors: 陈 艳飞
Published: November 2019

通过以道路桥梁工程项目的施工建设管理工作为研究对象，对其中的技术要点内容进行分析。在介绍并说明道桥工程特征的同时，从施工接缝、路床整修、排水系统、混凝土裂缝、人员技能管理这五个方面，详细论述具体的技术研点管理策略，为相关路桥工程的实践管理工作提供参考材料。
基于构件的产业化建筑工程造价计价分析
Authors: 胡 彦玲
Published: November 2019

在最近的几年时间里，在我国社会经济突飞猛进的带动下，产业化建筑行业取得了显著的进步，很多的地方配套政策随即制定出来，并加强了技术标准的优化创新，这样就为大量的大型企业的发展创造了良好的机会，有效的促进了产业化建筑行业的健康发展。在这个趋势下，为了保证整个行业能够稳定进步，需要加强经济限制的力度，对所有工作加以规范要求，不仅仅要对当前的清单计价体系进行充实和优化，并且还需要针对建筑安装工程的整体成本构成以及波动情况进行前期预判，为建筑工程造价计价工作的开展创造良好的基础。
化学镀铬的研究
Authors: 王 彦
Published: November 2019

六价铬对环境和人体健康有严重危害，促进了三价铬电镀研究的发展。与六价铬电镀相比，三价铬电镀具有许多优点。然而，三价铬电镀要得到广泛应用，还需要解决一些问题，如镀液组成复杂，工艺难以维护和控制，阳极选择困难，镀层难以增厚，镀层颜色不理想等。简要回顾了三价铬电镀的发展历程，介绍了目前三价铬电镀存在的问题，着重讨论了解决问题的途径和未来的发展方向。
浅谈建筑工程合同管理与风险防范控制
Authors: 李 常军 , 李 佳鹏
Published: November 2019

建筑工程是一种通过对各种房屋建筑及其附属设施的建设打造和与其配套的线路、管道、设施的安装活动所形成的工程实体。所以建筑工程存在以下特点：工程规模大、工期长、风险高。同时施工质量也极易受外界环境的干扰，具有一定的不稳定性。在这种漫长工期的情况下，种种外界因素极易影响建筑工程的进行，易出现工程时间延期，安全事故等问题。为避免这类问题的出现，签署一份具有法律效应的施工合同就十分重要。通过这样一种手段，全方位的保证了工程的顺利实施，对风险进行有效防范并加以控制，将其降到最低。
交通工程建设用材料的检测及影响因素探讨
Authors: 吾吉 阿力甫
Published: November 2019

在社会经济飞速发展的影响下，使得国内各个领域都取得了显著的进步，尤其是为我国的交通工程获得了前所未有的发展机遇。在交通工程快速发展的同时，对交通工程建设使用的材料的质量也提出个更高的要求，这就需要我们对建设材料的检测工作加以侧重关注。为了确保交通工程建设的质量，最为有效的方法就是针对检测工作加以完善和优化，确保建设物料的质量，从而保证工程建设的质量。
Strength Evaluation of a Bogie Frame by Different Methods
Authors: Chen Daoyun
Published: November 2019

Some crucial loads that current strength design specifications have not taken into account are also considered when assessing the strength of a bogie frame. Calculation methods of these loads come from load analysis. Finite element simulation and fatigue test rig have been used to assess static strength and fatigue strength of a bogie frame. In addition to the two methods, actual running test is also used to assess bogie frame fatigue strength. In finite element simulation method, endurance limit and modified Goodman fatigue limit diagram are two important tools to judge whether fatigue strength of a bogie frame meets requirement. In actual running test method, Miner linear cumulative damage rule is used to assess bogie frame fatigue strength.
The Use of Basalt Rock Powder and Superfine Sand as Supplementary Cementitious Materials for Friendly Environmental Cement Mortar
Authors: Qiao Hongxia , Ndahirwa Desire , Li Yuanke , Liang Jinke
Published: November 2019

The research gap about the application of basalt rock powder (BRP) and superfine sand (SS) as fillers in preparation of cement mortar is significant. This study characterizes the mechanical performance of the cement mortar formulated considering Portland cement, artificial sand and water as principal mixture components. To analyze the influence of BRP and SS on the strength properties of the mortar, the Portland cement and artificial sand have been replaced by BRP and SS respectively. The replacement percentages are 10%, 15%, 20%, 25% and 30% when the basalt rock powder replaces Portland cement and in case artificial sand is replaced by superfine sand, 10%, 20%, 30%, 40% and 50%. The percentages of basalt rock powder and superfine sand replace, in volume, the same quantity of Portland cement and artificial sand that forms portion of the mixture. The strength indexes such as flexural strength, compressive strength, ultrasonic pulse velocity and dynamic elastic modulus were investigated. Overall results show that despite the reduction of mechanical properties of cement mortar, BRP and SS can be used as partial replacement of Portland cement and artificial sand in account of ratios from 10% to 25% basalt rock powder quantity by Portland cement weight and 10% to 20% superfine sand amount by volume of artificial sand.
Effects of Si Addition on Microstructure, Properties and Serration Behaviors of Lightweight Al-Mg-Zn-Cu Medium-entropy Alloys
Authors: Li Yasong , Li Ruixuan , Zhang Yong
Published: November 2019

A series of as-cast lightweight multicomponent alloys Al(86-x)Mg10Zn2Cu2Six (x=0, 0.3, 0.6, 0.9, 1.2 at.%) were prepared by a vacuum induction furnace with a steel die. With the addition of Si, the reticular white Al-Cu phase deposited were gradually replaced by the gray eutectic Mg-Si phase, while the compressive strength of the alloys increases first and then decreases slowly. It is particularly noteworthy that the compression plasticity also exhibits this trend. When the Si content is 0.9 at.%, the compressive strength reaches its maximum at 779.11 MPa and the compressive plasticity reaches 20.91%. The effect of the addition of Si on the serration behavior of alloy was also studied; we found that the addition of Si introduces a new MgSi phase, and with the change of Si is significantly affects the morphology of the precipitated phase, which affects the serration behavior of the alloys. The comprehensive mechanical properties of the alloy are optimal at the critical point where the serration behavior disappears. In this work, we have provided a method and a composition for the preparation of a low-cost, high-strength, lightweight medium-entropy alloys.