bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Entrepreneurial Marketing dan Kebijakan Pemerintah terhadap Daya Saing Industri Alas Kaki di Bogor
Authors: Septiani Stevia , Sarma Ma'mun , Limbong Wilson H.
Published: May 2018

Entrepreneurial marketing is the suitable approach in terms of resource constraints and problems that exist in small and medium enterprises (SMEs). Footwear industry is a sector of Small and Medium Enterprises (SMEs) that is supported by the government of Bogor. Problems of development of footwear industry are divided into two main factors: the competence of SMEs and local government policy. Based on these problems, this study aims to (1) Identify the characteristics of entrepreneurs, business characteristics and linkages both of them, (2) Identify and analyze the ability of entrepreneurial marketing, implementation of government policies and the ability of the competitiveness of small industrial footwear in Bogor, and (3) Identify and analyze the influence of entrepreneurial marketing and government policies on the competitiveness of the footwear industry in Bogor. Sample selection is done by purposive cluster sampling method. The samples in this study were 100 small business owners. This study employs three data analysis: descriptive analysis, index transformation analysis, and analysis of structural equation modeling (SEM) with partial least square (PLS). Characteristics of footwear SME owners in Bogor is included the low-educated group. However, they have excellent expertise in the producing of footwear. Characteristics of footwear enterprises in Bogor, is categorized as the long standing and major businesses. Based on the analysis of SEM with PLS approach, it is known that the entrepreneurial marketing variables have a positive impact on the competitiveness of small industrial footwear in Bogor, while the government policies variables have an indirect effect on competitiveness through entrepreneurial marketing variables.

Keyword: entrepreneurial marketing, competitiveness, SMEs, footwear industry, PLS
Analisis Portofolio Untuk Menentukan Expected Return Optimal dan Risiko Minimal pada Saham Perusahaan Telekomunikasi yang Terdaftar di Bursa Efek Indonesia
Authors: Paramitasari Ratih , Mulyono Mulyono
Published: May 2018

Investasi merupakan penanaman sejumlah dana dalam bentuk uang maupun barang yang diharapkan akan memberikan hasil di kemudian hari. Investor tidak mengetahui dengan pasti hasil yang akan diperoleh dari investasi yang mereka lakukan. Dalam keadaan semacam itu dapat dikatakan bahwa investor tersebut menghadapi risiko dalam investasi yang dilakukan. Langkah pendekatan yang dapat dilakukan oleh para investor dalam menghadapi risiko investasi adalah melakukan penghitungan dalam pemilihan dan penentuan portofolio serta pola perilaku investor di bursa dalam transaksi jual beli saham. Hakikat pembentukan portofolio adalah mengalokasikan dana pada berbagai alternatif investasi atau melakukan diversifikasi pada beberapa aktiva finansial, sehingga risiko investasi secara keseluruhan akan dapat diminimalkan. Penelitian ini bertujuan untuk menemukan bukti empiris untuk mendapatkan alternatif investasi saham yang menghasilkan expected return saham yang optimal dan menurunkan risiko investasi yang minimal. Penelitian ini mengidentifikasi kombinasi portofolio optimal yang dapat dibentuk dari saham perusahaan kategori telekomunikasi. Metode pendekatan dalam penelitian ini adalah dengan tingkat keuntungan yang diharapkan (expected return) dan risiko yang dihasilkan dari kombinasi portofolio saham. Penelitian ini dilakukan di Indonesia dengan populasi adalah saham perusahaan yang masuk dalam kategori telekomunikasi menurut IDX statistic periode tahun 2009 sampai dengan tahun 2011 dengan metode purposive sampling. Terdapat lima perusahaan yang dapat dibentuk menjadi portofolio saham dengan kombinasi antara 2 saham sampai dengan 5 saham. Dari semua kombinasi saham yang dapat dibentuk kemudian diperingkat berdasarkan nilai Coefficient of Variance (CV). Portofolio yang paling optimal adalah portofolio yang memiliki nilai CV terkecil. Dari hasil perhitungan dengan menggunakan Single Index Model dan Equally Weighted menunjukkan menunjukkan bahwa kombinasi 2 saham memiliki nilai CV terkecil yaitu kombinasi untuk saham PT. Bakrie Telecom, Tbk dan saham PT. XL Axiata, Tbk.Kata kunci: expected return, risiko, portofolio, coefficient of variance
Strategi Manajemen Konflik Sebagai Upaya Meningkatkan Kinerja Teamwork Tenaga Kependidikan
Authors: Wartini Sri
Published: May 2018

The purpose of this research is to explain influence of conflict management strategy on teamwork performance. This kind of conflict can happen to everyone and in any places disregarding status, income and position. Someone who can not manage conflicts will have a threat for his personal performance, and unfortunately, company’s performance will also gain the effect. Accordingly, we need a strategy to manage  conflicts as an effort to create a good performance for individual employee performance as well as tha team performance. The population af this research is the entire educational employees in UNNES by taking some samples using propotional sampling to around 88 samples. The result of this research  proves that hypothesis stating “conflict management strategy” influenced positively and significantly on teamwork performance is accepted. This explains that conflict management strategy can give contribution to the teamwork performance through employee’s ability to accomodate ideas from partners of work, avoid disputes by respecting each other, maintaining communication and conduct colaboration on working methods. It is suggested that this research should improve strategies in managing conflicts such as strategies to compete at work by giving chance to other partner to use theirs skill in making decision and finding solution to solve the job.Keywords: conflict management strategy, teamwork’s performance, educational employee
Dampak Sumber Daya VRIN terhadap Keunggulan Bersaing dan Kinerja (Studi pada UKM di Medan)
Authors: Miraza Zuwina , Hafas Hafriz Rifki
Published: May 2018

In order to achieve positive performance growth in this era of global competition, Small Medium Enterprises (SMEs) must have sustainable competitive advantages. Competitive advantages can be obtainedif SME have Valuable, Rare, Inimitable and Non-substitutable (VRIN) resources. Therefore this research aimed to study the effects of VRIN resources to competitive advantages and performance. The subjects of this study was 187 SMEs listed in Cooperation Office and SME of Medan. Using path analysis, the obtained result shows that rareness gave direct effects to performance and in-immitable gave indirect effects to performance through competitive advantages as intervening.Keywords: VRIN, competitive advantage, performance, small medium enterprises
Pengaruh Faktor Kualitas Jasa Perguruan Tinggi Jarak Jauh (PTJJ) terhadap Kepuasan Mahasiswa dan Niat Menyelesaikan Kuliah (Studi Kasus Mahasiswa Fakultas Ekonomi Universitas Terbuka)
Authors: Maria Maya , Hadiwidjaja Rini Dwiyani , Mulyana Andy
Published: May 2018

This study aims to determine the effects of open distance learning service quality dimensions consisting of  the way of learning, tutoring and teaching, modules, student services, programs of study, tuition and fees, physical facilities to student satisfaction and the behavioral intentions of completing the study at Universitas Terbuka (UT). Thisresearch analysis unitswere the students of the Faculty of Economic, Universitas Terbuka (FEKON-UT) who registeredin 2012with a population of 2085 people. The method of sample selection was convenience samplingmethod to the college students who have taken at least one semester. The data were analyzed from 161 respondents spread in 7 UPBJJ-UTthroughout Indonesia with a certain proportion. To obtain the data, this study used survey methods of primary data and secondary data. Analysis tool to test the hypothesis is a structural equation modelling (SEM) with Partial Least Square (PLS). The finding of this studywere the significance effects on :1) the quality of services to satisfaction of students; 2) the quality of services to the intention of completing studying at UT; and 3) student satisfaction to the intention of completing college at UT.Keywords: service quality, student satisfaction, open distance learning, intention to finish college
Analisis Peningkatan Kualitas pada Rantai Pasok Buah Pepaya Calina
Authors: Prihatiningtyas Ratih , S Alim Setiawan , Wijaya Nur Hadi
Published: May 2018

Due to the fact that post-harvest handling of local fruits especially in Calina papaya supply chain (IPB 9) has experience problems that can affect the value of its quality appearance, quality improvement is absolutely required. The purposes of this research are 1) Identifying the key attributes of Calina papaya quality improvement based on desires of consumers and to know the level of customer satisfaction using Quality Function Deployment (QFD); 2) Analyzing the causes of Calina papaya quality problems, and 3) Analyzing strategies or ways to improve the quality of Calina papaya in Indonesia. The results of this research show that there are three main attributes of customer satisfaction; namely, the sweet taste, color of fruit meat, and texture of fruit meat. Supply chain activities that have the highest interests of rate based on analysis of QFD are the maintenance (value 521) of cultivation. There are two attributes that have mismatches of quality; bruise and pests-diseases, caused by the raw materials, management, labor, environment, machine and method. The highest priority that can be chosen as the alternative strategy is increasing production capacity, product quality, and food safety assurance by expanding the distribution network. Keywords : Calina papaya, quality function deployment, strategy, quality
Pengaruh Faktor-Faktor Pembentuk Loyalitas Mahasiswa Universitas Terbuka
Authors: Ayuni Devi , Mulyana Andy
Published: May 2018

Currently the learning system based on Information and Communication Technology (ICT) has been growing. The Open University (UT) has been using e-learning in the provision of learning support services. Online tutorials (Tuton) is one form of e-learning provided UT. Since the registration period of 2013.1-2014.2, the number of courses offered in Tuton increased by 11% and participants also increased by 52%. Although Tuton has been growing rapidly, the total number of students has declined from the registration period of 2013.1 to 2015.1. Such a decrease can be justified as an indicator of lack of loyalty or retention of students. The main objective of this study is to test the relationship between the antecedents of loyalty, service quality, commitment, satisfaction, and reputation. The study population comes from four faculties and one graduate program. Nonprobability method of sampling with judgmental sampling technique is used in this study. The minimum required sample size is 200 respondents. Survey data collection is conducted by inviting respondents by email to fill out a questionnaire online in google site. Then the data were analyzed both descriptively and quantitatively using descriptive analysis and Structural Equation Modeling (SEM). Results of hypothesis testing showed that 6 of 7 hypothesis were accepted with significant results. These sixth hypothesis are1) the influence of the quality of services to satisfaction; 2) the effect of the reputation on the quality of services; 3) the effect of commitment to student satisfaction; 4) the effect of satisfaction on reputation; 5) the effect of satisfaction on loyalty; and 6) the effect of reputation on loyalty. As for the rejected hypothesis is the effect of reputation on commitment.Keywords : loyalty, quality of service, commitment, satisfaction, reputation
Analisis Faktor yang Mempengaruhi Kebijakan Hutang Emiten Pertanian di Bursa Efek Indonesia
Authors: Ramadhany Reza , Aminah Mimin , Permanasari Yusrina
Published: May 2018

In financial management perspective, corporate goal is to maximize shareholder or corporate value. The purpose of this study was to analyze the effect of institutional ownership (INST), asset structure (FAR), profitability (ROA), and corporate growth (GROWTH) on debt policy. This study used linear and multiple regression analysis. Significant test results of individual parameters (t statistical test) showed that significant value of INST variable 0.058 < 0.1 (α) and -0.632 (β), FAR 0.097 < 0.1 (α) and 1.019 (β), ROA 0.043 < 0.1 (α) and -1.198 (β), and GROWTH 0.064 < 0.1 (α) and 0.972 (β). The results showed that INST and ROA significantly and negatively affect debt policies, while FAR and GROWTH were significantly and positively affect on debt policies. Whereas, test result of simultaneous (F statistical test) showed that significant value was 0.010 < 0.1 (α) and the value of F calculated was 4.184 > 2.184 F table. These results indicated that institutional ownership, asset structure, profitability, and corporate growth had a significant effect on debt policy simultaneously.Keywords : institutional ownership, structure of assets, profitability, corporate growth
SISTEM PENYEDIAAN DAN DISTRIBUSI AIR BERSIH DI DESA TLOGOAGUNG KECAMATAN KEMBANGBAHU KABUPATEN LAMONGAN DENGAN EPANET 2.0
Authors: Wahyuni Indrawati , Affandy Nur Azizah
Published: May 2018

The availability of water is very important for human life, because water is a major human need. It is very important to plan a well-managed water supply system. Tlogoagung Village, Kembangbahu sub-district, Lamongan regency is one of the villages that have not yet a clean water distribution network, so it is necessary to plan clean water distribution network. The source of water used is the water source of the lake in the village. Clean water network system by making intake in lake then pumped to reservoir of distribution. Furthermore, it is distributed to the residential connection service area of the population with gravity system. A clean water network system is planned to meet the needs of clean water up to 2037. Clean water demand is calculated based on population projection by using linear analysis. From the calculation, the need of clean water in Tlogoagung village, Kembangbahu sub-district of Lamongan regency in 2036 with the population of 4431 populations reach 7,431 ltr / sec, for transmission pipes using pipes with 4 inch or 0.1016 m diameters. For distribution pipes using 3 inch diameter pipes 0.0762 m or 2 inch diameter or 0.0508, diameter 1 ½ or 0.0381 m, diameter 1 inch or 0.0254 m. To design a clean water distribution network using Epanet 2.0 software
PENGEMBANGAN POTENSI PARIWISATA, EKONOMI LOKAL BERBASIS E-COMMERCE KAWASAN WISATA GUNUNG IJEN KAB. BANYUWANGI
Authors: Ardianti Riski Isminar
Published: May 2018

The era of globalization make the move into tourism industry's largest and strongest in the financing of the global economy. The development of tourism has three functions Promote the economy; Maintaining the national identity and preservation of function and quality of the environment; foster a love for the homeland and the nation. Rapid technological advances that make more rapid dissemination of information. The purpose of the study is to examine the promotion of e-commerce can increase the number of tourist visits in the tourist area of Mount Ijen and through the increase in traffic would improve the welfare of local communities. The study population was a tourist visitor Mount Ijen by taking the sampling method using a random sampling of 350 samples, data collection techniques using questionnaires and interviews. Methods of qualitative and descriptive analysis using bivariate analysis. The results of this study indicate that the tourism promotion Ijen crater through e-commerce can increase the number of tourist visits. Ijen crater tourism information through the Internet easier and cheaper to obtain travel information. With the increasing number of tourist visits Ijen crater members positive impact on the welfare of local communities, especially sulfur miners who were around tourist sites Mount Ijen.
THE EFFECT OF INTERNAL AND EXTERNAL FACTORS TO AUDIT DELAY AND TIMELINESS (Empirical Study From Real Estate, and Property Company In Indonesia)
Authors: Mawardi Rizal
Published: May 2018

Implementasi Good Corporate Governance (GCG) yang menekankan pentingnya transparansi dan akuntabilitas publik dalam pelaksanaan audit sehingga dalam proses audit membutuhkan jangka waktu yang cukup lama agar menghasilkan kualitas opini yang baik. Informasi keuangan lebih banyak memiliki nilai bagi pengguna laporan keuangan bila disajikan tepat waktu. Terdapat beberapa faktor yang menyebabkan meningkatnya waktu pengauditan (Audit Delay) yang menyebabkan penundaan kelayakan pelaporan keuangan (Timeliness). Peneliti melihat adanya faktor internal dan eksternal perusahaan yang mempengaruhi lamanya waktu pengauditan dan ketepatan waktu pelaporan keuangan. Populasi dan Sampel penelitian ini yaitu pada perusahaan yang menerbitkan Laporan Keuangan di Bursa Efek Indonesia (BEI) tahun 2012-2014. Tekhnik Analsis yang digunakan adalah menggunakan uji statistika Regresi Berganda. Hasil penelitian menunjukan bahwa faktor Internal saja yang mempengaruhi secara signifikan Audit Delay yaitu Profitabilitas, Solvabilitas dan Ukuran Perusahaan, sedangkan untuk variabel Timeliness, faktor yang mempengaruhi secara signifikan yaitu Tingkat Profitabilitas, Solvablitas dan Ukuran Kantor Akuntan Publik. Penelitian ini diharapkan mampu memberikan penambahan pandangan untuk literatur Penundaan Audit dan Ketepatan Pelaporan Keuangan.Keyword :        Faktor Internal, Faktor Eksternal, Audit Delay, Timeliness
CORPORATE SOCIAL RESPONSIBILITY DALAM PEMIKIRAN BUDAYA JAWA BERDIMENSI “HAMEMAYU HAYUNING BAWANA” (Pendekatan Studi Hermeneutika)
Authors: Pangesti Resha Dwiayu
Published: May 2018

Corporate Social Responsibility (CSR) is a phenomenon and strategy that companies use to accommodate the needs from stakeholder interests. This program is a form of corporate responsibility to reduce social disturbance and is believed to improve the relationship between humans, nature and God. The purpose of this article is to reveal the meaning that social and environmental accounting can be viewed in the perspective of Hamemayu Hayuning Bawana, a corporate social responsibility (CSR) program as a form of corporate responsibility report on the environment, education and social activities to achieve perfection of life of the company. The hermeneutical study approach is a method of this research used to reveal the meaning of the text of Javanese philosophy Hamemyu Hayuning Bawana. The concept of Cororate Social Responsibility is part of a form of alignment of life for social activities in achieving perfection of life in accordance with the philosophy of Hamemayu Hayuning Bawana.Keyword: Corporate Social Responsibility, Cultural Thought Java, Hamemayu Hayuning Bawana, Hermeneutics Approach
Global Heat Flow: New Estimates Using Digital Maps and GIS Techniques
Authors: Hamza Valiya Mannathal , Vieira Fábio
Published: May 2018

The digital geophysical maps and GIS (Geographic Information System) techniques have been employed in obtaining a better understanding of global heat flow. The starting point has been a system of 1o x 1o equal longitude grid consisting of 64800 cells. Superposed on this grid system are a set of 190 polygons that approximates boundaries of tectonic provinces and another set of 137 polygons that outlines age provinces. The area extents of these “tectonic polygons” were determined, and heat flow values calculated based on the empirical relation between heat flow and age of last thermos-tectonic event. Maps derived using such polygon representations reveal a pattern quite similar to that obtained in higher-degree spherical harmonic representations of global heat flow. In addition, an updated assessment of observational data has been carried out and estimated values assigned for cells where observational data are currently unavailable. This practice has been found to provide reasonable bounds in interpolations, leading to better representations of heat flow on a global scale. The mean global heat flow values obtained by this procedure is found to fall in the interval of 58 to 63mW/m². This estimate is lower than that reported in some of the previous studies in which use has been made of theoretical values derived from half-space cooling models as substitutes for experimental data. According to the results of the present work, based on reappraisal of global heat flow database and with due emphasis on observational data, the global conductive heat loss falls in the range of 28 to 35TW. This is nearly 22 to 35% less than those reported in earlier studies.
Microvascular Decompression for Trigeminal Neuralgia: Our Experiences at Bir Hospital
Authors: Sharma Gopal R , Jha Rajiv , Poudel Prakash , Adhikari Dhrub R , Bista Prakash
Published: May 2018

Trigeminal neuralgia (TGN) is a very peculiar disease, mostly characterized by unilateral paroxysmal facial pain, often described by patient as ‘one of the worst pain in my life’. This condition is also known as ‘Tic Douloureus’. The annual incidence of TN is about 4.7/100000 population, male and female are equally affected. The diagnosis is usually made by history, clinical fi ndings and cranial imaging is required to rule out compressing vascular loop, organic lesions and Multiple Sclerosis (MS) at Trigeminal nerve (TN). Treatment of TGN ranged from medical to surgical intervention. Between September 2007 and April 2015, 20 patients underwent micro vascular decompression (MVD) of TN for TGN who were refractory to medical treatment at department of Neurosurgery, Bir Hospital. All decompressions were performed using operating microscope. Follow up period ranged from 22 months to 8 years.There were 9 males and 11 females and age ranged from 30-70 years. The neuralgic pain was localized on right side in 13 patients and left on 7 patients. Pain distribution was on V3 (mandibular branch) dermatome in 11, V2( Maxillary branch ) in 4, V2-3 in 2 and V1- 2-3 in 3 patients respectively. On intraoperative fi ndings TN was compressed by superior cerebellar artery ( SCA ) in 8, tumors in 4, unidentifi ed vessels in 3, veins in 2, anterior inferior cerebellar artery ( AICA ) in 1 and no cause was found in 2 patients. 7 patients suffered postoperative complications which included hyposthesia in 3, pseudomeningocele in 3 and meningitis in 1. There was no mortality in this series. 20 patients felt pain relief immediately after procedure and 1 patients came after 3 years with recurrent pain requiring second surgery. In conclusion, MVD for TGN in younger patients who are refractory to medical treatment is one of the best treatment options which is safe and long term pain relief is achieved in majority of cases.Nepal Journal of Neuroscience, Vol. 14, No. 2,  2017 Page:11-15
IDENTIFIKASI KESELAMATAN PENANGANAN LIMBAH PELUMAS PADA PT.ALTRAK 1978 BALIKPAPAN
Authors: Azteria Veza , Efendi Jamal
Published: May 2018

One of the B3 waste that needs to get special handling because it is produced in high amount in the society is the oil used oil (used oil). Used lubricating oil is produced from various human activities such as, industry, mining, and workshop. The purpose of this research is to know how to identify the handling safety of lubricant waste at PT.ALTRAK 1978 Balikpapan and to determine the proper controlling step. This research is designed as an observational descriptive evaluation research conducted by checklist, JSA (Job Safety Analysis) with observation, analyze , Observation and processing of data and information that has been collected systematically. The results showed that the handling of lubricant waste in PT.ALTRAK 1978 Balikpapan get the results of the value by using a percentage calculation of 72% if adjusted to the operational standard of the procedure is included in the assessment with enough results.Identifikasi safety handling lubricant waste in PT.ALTRAK 1978 Balikpapan can be done By making JSA (Job Safety Analysis) as well as adjustment to standard operational procedures with the implementation of the field.
KEANEKARAGAMAN JENIS MAKROZOOBENTOS DIMUARA SUNGAI NIPAH KECAMATAN PERBAUNGAN KABUPATEN SERDANG BEDAGAI SUMATERA UTARA
Authors: Siamtupang Lestari Lidya Octaviani , Kardhinata E. Harso , ZNA Hanifah Mutia
Published: May 2018

This research was conducted to determine the species diversity of macrozoobenthos and determine the condition of physical and chemical factors in the waters of estuary river inÂ  Nipah Village Perbaungan District Serdang Bedagai Sumatera Utara. The result of diversity of macrozoobenthos obtained 28 species with one phylum, 2 class, 7 orders, 18 families and 20 genera. Measurement of physical and chemical factors waters obtained an average pH 7 both ebb and tide conditions; in conditions of salinity waters receded an average of 0 and at high tide the average of 5; the ebb and tide conditions an average temperature of 27-30Â°C; Average current speed 10,5-19,1 cm/s; Brightness average water 14-16,3cm; and an average depth of 40,3-150cm. Values obtained by the abundance of species which are 3378-5322 ind/m2. Macrozoobenthos types that dominate the river mouth Nipah are gastropods. Values Diversity Index (H ') macrozoobenthos of 2.152 to 2.762 were classified into well water. Uniformity index (E) showed a value of 0.397 to 0.532 (deployment is not uniform or uneven). Value Dominance Index (C) showed a value of 0.074 to 0.170 (the dominance of low or no kind dominance). In general, relatively good water conditions and suitable for life macrozoobenthos.
POTENSI BAKTERI KITINOLITIK NR09 PADA BEBERAPA MEDIA PEMBAWA DALAM MENGHAMBAT PERTUMBUHAN JAMUR PATOGEN Sclerotium rolfsii dan Fusarium oxysporum PADA BENIH CABAI MERAH (Capsicum annuum L.)
Authors: Hutauruk Deswidya Sukrisna
Published: May 2018

This study was aims to determine the viability of chitinolytic bacterial isolates in some carrier media and to know the potential of chitinolytic bacterial isolates in various carrier media in controlling the disease of sprout caused by F. oxysporum and S. rolfsii on red pepper plant. The method used by measuring the viability and ability of bacteria in growing media and carrier media on MGMK media after storage of carrier media for 90 days. Bacteria NR09 has good viability on peat carrier media and palm oil bunch compostÂ  and has the potential to inhibit attack of pathogenic fungi S. rolfsii and F. oxysporum.
Lebenszykluskostenbewertungen zur frühzeitigen Produktbeeinflussung im Produktentstehungsprozess
Authors: Müller Andreas , Demke Niels , Mantwill Frank , Choudry Saphir A.
Published: May 2018

Kurzfassung

Steigender Wettbewerbsdruck führt zu hohen Anforderungen an die Produktentwicklung bei einer gleichzeitig wirtschaftlich, ökologisch und technologisch optimalen Herstellung. Die frühe Konzeptphase im Produktentstehungsprozess birgt hierfür ein großes Optimierungspotenzial. Eine frühzeitige Berücksichtigung von Lebenszykluskosten in der Konzeptphase ist durch die zukünftige Produktgestalt auf Basis von Produktionsanforderungen möglich. Der Beitrag beschränkt sich dabei zunächst auf die wirtschaftliche Dimension. So können der Produktentwicklung seitens der Produktionsplanung Lösungsangebote auf Basis von Lebenszykluskostenbetrachtungen bereitgestellt werden. In diesem Beitrag wird ein Ansatz vorgestellt, der bereits in der frühen Konzeptphase Produktionsanforderungen berücksichtigt, um eine optimierte Entscheidungsfindung auf der Grundlage von Lebenszykluskosten zu ermöglichen.
Der Weg zur Industrie 4.0-Roadmap
Authors: Braun Anja , Ohlhausen Peter , Alt Christian , Bahlinger Daniel , Chaves Daniel Czilwik , Egeler Markus , Gramespacher Stefan , Matzka Janine , Steinbeck Jan , Weber Christian
Published: May 2018

Kurzfassung

Die vierte industrielle Revolution stellt neue Anforderungen an Unternehmen und insbesondere an KMU. Das verfügbare Know-how bei der Implementierung von Industrie 4.0-Ansätzen stellt für viele KMU eine Herausforderung dar. Derzeit existieren in der Literatur verschiedene Wege zur Erstellung einer auf das Unternehmen angepassten Industrie 4.0-Roadmap. Eine Ausrichtung auf die Belange von KMU fehlt jedoch gänzlich. Mit dieser Arbeit werden verschiedene Ansätze zur Erstellung einer Industrie 4.0-Roadmap zusammengefasst und anschließend untersucht, worauf KMU mit ihren spezifischen Eigenschaften besonders ihren Fokus legen sollten.
Simulationsbasierte Rekonfigurationsplanung flexibler Montagesysteme
Authors: Siedelhofer Christian , Schallow Julian , Wolf Patrick , Mayer Sebastian , Deuse Jochen
Published: May 2018

Kurzfassung

Die Rekonfiguration flexibler Montagesysteme erfolgt in immer kürzeren Zyklen, was zu einem erhöhten Planungsaufwand führt. Zur Unterstützung der Montageplanung und Erhöhung der Planungs-qualität wird eine Planungssystematik für die Rekonfiguration entwickelt. Die Planungsmethode basiert auf einem integrierten, digitalen Planungswerkzeug, welches ein PLM-System und ein Simulationswerkzeug konsistent verknüpft.
Qualitätsbasierte Auftrags-zuordnung
Authors: Schmitt Jacqueline , Wiegand Mario , Deuse Jochen
Published: May 2018

Kurzfassung

Die Gewährleistung durchgängiger Qualität ist für Unternehmen ein wesentlicher Wettbewerbsfaktor. Die Qualitätsanforderungen des Kunden an ein Produkt können dabei sehr unterschiedlich sein. Im Rahmen dieses Fachbeitrags wird ein Konzept zur optimalen Zuordnung von Zwischenprodukten zu Kundenaufträgen aus dem Auftragsbestand auf Basis von Qualitätsprognosen vorgestellt. Ziel des Konzepts ist die Reduzierung von Ausschuss und Lieferterminabweichungen.
Effect of various ratios of nitric acid – chloride on electronic properties of passive films on AISI 304L stainless steel
Authors: Khobragade Nilay N. , Bansod Ankur V. , Patil Awanikumar P. , Bihade Manish
Published: May 2018

In this study, the electrochemical behavior of 304L SS stainless steel in various nitric acid/chloride ratios was investigated. The characteristics of the passive film, formed at the open circuit potential (OCP) and at the passive potential (0.65 V vs SCE) were also compared. OCP results show that a stable passive film formed over the surface with higher nitric acid/chloride ratios. Potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) measurements showed that with higher nitric acid/chloride ratios, the film resistance increases (R1) for OCP, passive potential, and the critical current density (icrit) and corrosion rate (icorr) decreases. Mott–Schottky analysis revealed that the film formed at OCP shows n-type behavior for 0.01 N and 1 N concentration and shows p-type behavior for 0.1 N nitric acid concentration. At 0.65 V (vs. SCE) of film formation potential, the film formed in 1 N concentration shows n – type behavior. In 0.01 N and 0.1 N acid concentration, p-type behavior has been observed. Also, according to Mott–Schottky analysis, it was found that a lower defect density was found in 0.1 N nitric acid, for both the potentials. X-ray photoelectron spectroscopy spectra show evidence that the surface contains Fe and Cr as major elements. However, at OCP, Fe2O3was the main constituent of the passive film, whereas the passive potential film was rich in Cr2O3. In addition, nitrogen and chloride were adsorbed in the passive film at passive potential.
On the Influence of Solution and Ageing Treatments on the Microstructure of ZK40 Alloys Modified with Ca, Gd, Nd and Y Additions
Authors: Buzolin R. H. , Mendis C. L. , Tolnai D. , da Silva E. Pereira , Kainer K. U. , Hort N. , Pinto H. Cavalcanti
Published: May 2018

As-cast ZK40 alloys, modified with the addition of CaO, Gd, Nd and Y were investigated. Solution heat treatments were performed based on differential thermal analysis results. The unmodified ZK40 alloy exhibited microstructure with nearly no intermetallic compound but with precipitates formed during the solution treatment. The modified ZK40 alloys exhibited a semi-dissolved network of intermetallic compounds along the grain boundaries and zones of intermetallic compounds within the grains. Interestingly, no precipitates were observed immediately next to the grain boundaries. The energy dispersive X-ray spectroscopy line scans showed an enrichment of Zn and Zr in the regions where the precipitates are found, suggesting that they are Zn-Zr precipitates. The ageing behaviour was compared between the as-cast and the solution treated materials and it was found that apart from the ZK40-Gd, ZK40-Nd and ZK40-Y aged at 200 °C after solution treatment, there is no notable ageing response for the investigated alloys.
Does Literature Matter Today? Thoughts of the Outside
Authors: Xie Shaobo
Published: May 2018

The paper celebrates the publication of Ranjan Ghosh and J. Hillis Miller's Thinking Literature across Continents as a significant event in the age of neoliberalism. It argues that, in spite of the different premises and the resulting interpretative procedures respectively championed by the two co-authors, both of them anchor their readings of literary texts in a concept of literature that is diametrically opposed to neoliberal rationality, and both impassionedly safeguard human values and experiences that resist the technologisation and marketisation of the humanities and aesthetic education. While Ghosh's readings of literature offer lightning flashes of thought from the outside of the Western tradition, signalling a new culture of reading as well as a new manner of appreciation of the other, Miller dedicatedly speaks and thinks against the hegemony of neoliberal reason, opening our eyes to the kind of change our teaching or reading of literature can trigger in the world, and the role aesthetic education should and can play at a time when the humanities are considered ‘a lost cause’.
The Evaluation of Bivariate Mixed Models in Meta-analyses of Diagnostic Accuracy Studies with SAS, Stata and R
Authors: Vogelgesang Felicitas , Dewey Marc , Schlattmann Peter
Published: May 2018

Background: Meta-analyses require a thoroughly planned procedure to obtain unbiased overall estimates. From a statistical point of view not only model selection but also model implementation in the software affects the results.

Objectives: The present simulation study investigates the accuracy of different implementations of general and generalized bivariate mixed models in SAS (using proc mixed, proc glimmix and proc nlmixed), Stata (using gllamm, xtmelogit and midas) and R (using reitsma from package mada and glmer from package lme4). Both models incorporate the relationship between sensitivity and specificity – the two outcomes of interest in meta-analyses of diagnostic accuracy studies – utilizing random effects.

Methods: Model performance is compared in nine meta-analytic scenarios reflecting the combination of three sizes for meta-analyses (89, 30 and 10 studies) with three pairs of sensitivity/specificity values (97%/87%; 85%/75%; 90%/93%).

Results: The evaluation of accuracy in terms of bias, standard error and mean squared error reveals that all implementations of the generalized bivariate model calculate sensitivity and specificity estimates with deviations less than two percentage points. proc mixed which together with reitsma implements the general bivariate mixed model proposed by Reitsma rather shows convergence problems. The random effect parameters are in general underestimated.

Conclusions: This study shows that flexibility and simplicity of model specification together with convergence robustness should influence implementation recommendations, as the accuracy in terms of bias was acceptable in all implementations using the generalized approach.
A Robust Method with High Time Resolution for Estimating the Cortico-Thalamo-Cortical Loop Strength and the Delay when Using a Scalp Electroencephalography Applied to the Wake-Sleep Transition
Authors: Kishi Akifumi , Togo Fumiharu , Nakamura Toru , Yamamoto Yoshiharu , Yamaguchi Ikuhiro
Published: May 2018

Objectives: This study aimed to describe a robust method with high time resolution for estimating the cortico-thalamo-cortical (CTC) loop strength and the delay when using a scalp electroencephalography (EEG) and to illustrate its applicability for analyzing the wake-sleep transition.

Methods: The basic framework for the proposed method is the parallel use of a physiological model and a parametric phenomenological model: a neural field theory (NFT) of the corticothalamic system and an autoregressive (AR) model. The AR model is a “stochastic” model that shortens the time taken to extract spectral features and is also a “linear” model that is free from the local-minimum problem. From the relationship between the transfer function of the AR model and the transfer function of the NFT in the low frequency limit, we successfully derived a direct expression of CTC loop strength and the loop delay using AR coefficients.

Results: Using this method to analyze sleep-EEG data, we were able to clearly track the wake-to-sleep transition, as the estimated CTC loop strength (c
2) decreased to almost zero. We also found that the c
2-distribution during nocturnal sleep is clearly bimodal in nature, which can be well approximated by the superposition of two Gaussian distributions that correspond to sleep and wake states, respectively. The estimated loop delay distributed ∼0.08 s, which agrees well with the previously reported value estimated by other methods, confirming the validity of our method.

Conclusions: A robust method with high time resolution was developed for estimating the cortico-thalamo-cortical loop strength and the delay when using a scalp electroencephalography. This method can contribute not only to detecting the wake-sleep transition, but also to further understanding of the transition, where the cortico-thalamo-cortical loop is thought to play an important role.
Atomic-level characterization and cilostazol affinity of poly(lactic acid) nanoparticles conjugated with differentially charged hydrophilic molecules
Authors: Matus María Francisca , Ludueña Martín , Vilos Cristian , Palomo Iván , Mariscal Marcelo M
Published: May 2018

Nanotherapeutics is a promising field for numerous diseases and represents the forefront of modern medicine. In the present work, full atomistic computer simulations were applied to study poly(lactic acid) (PLA) nanoparticles conjugated with polyethylene glycol (PEG). The formation of this complex system was simulated using the reactive polarizable force field (ReaxFF). A full picture of the morphology, charge and functional group distribution is given. We found that all terminal groups (carboxylic acid, methoxy and amino) are randomly distributed at the surface of the nanoparticles. The surface design of NPs requires that the charged groups must surround the surface region for an optimal functionalization/charge distribution, which is a key factor in determining physicochemical interactions with different biological molecules inside the organism. Another important point that was investigated was the encapsulation of drugs in these nanocarriers and the prediction of the polymer–drug interactions, which provided a better insight into structural features that could affect the effectiveness of drug loading. We employed blind docking to predict NP–drug affinity testing on an antiaggregant compound, cilostazol. The results suggest that the combination of molecular dynamics ReaxFF simulations and blind docking techniques can be used as an explorative tool prior to experiments, which is useful for rational design of new drug delivery systems.
DURABILITY OF A REPAIRED DUNE SAND MORTAR MODIFIED BY CERAMIC WASTE
Authors: ABADOU Yacine , KETTAB Ratiba , GHRIEB Abderrahmane
Published: May 2018

The waste-modified mortars have an important place in the range of repair products. The objective of this study is to better understand and analyze, in one hand, the influence of ceramic waste in the dune sand mortars on the quality of repair concrete surfaces, in the other hand, durability of the mortars in interaction with the substrates to which they are applied. As regards the mortar layer durability, two indicators are chosen: the first is the adhesion to the substrate, and the second is the stress state in the mortar layer. For this, two types of modified mortars were made using two types of waste ceramics: sanitary ceramics and earthenware. To evaluate the quality of the adhesion to a substrate surface to be repaired, an adhesion test based on the three point bending test was implemented, taking into account the influences of the environment, the state of the surface of the substrate, the nature of the substrate defined by its water saturation degree and its porosity. The mortar composition parameters, in particular, the nature and the amount of ceramic, were studied. The results enable us to evaluate the influences of the waste ceramic incorporation in the mortar and the substrate condition on which the mortar is applied. Show that the adhesion depends on both the type and the amount of the used ceramic waste and the applied cure. It is optimized from 30% of ceramic earthenware and sanitary mortar adhesive strengths are higher than mortars based on dune sand ones.
CORROSION IMPACT ANALYSIS ON RESIDUAL LIFE OF STRUCTURE USING CATHODIC TECHNIQUE AND ALGOR SIMULATION SOFTWARE
Authors: NAYAK Chittaranjan Birabar , THROAT Nivedita Sunil , THAKARE Sunil Bhimrao
Published: May 2018

Damage to the reinforced concrete structure is mainly occurring because of two reasons either due to end of service life or due to load exceeds beyond structural capacity. Along with these two reasons degradation of material property is the one more major factor which causes the risk of failure. A concrete structure constructed in an aqueous environment get exposed to the corrosion process. Consequently, this causes the generation of crack, fragilization, a decrease of bond strength between reinforcement and concrete. All these factors affection static and dynamic behavior of concrete structure reducing the service life of an affected area. Whereas service life carries the major role in the economy of a concrete structure that is why various methods have been developed in the second half of the 20th century to find out the residual life of the structure. In this proposed work, a non-destructive technique is used to predict the residual life of reinforced concrete beams having different cracking levels, as results of steel reinforcement corrosion, considering the variation produced in the dynamic behavior, through the variation of the first natural vibration frequency. Whereas to accelerate the corrosion process, impress current technique is used in which a current is externally applied to induce corrosion in reinforcement and then crack widths and vibration natural frequencies were measured. A numerical model is proposed with the help of FEM based Auto desk Algor simulation software to predict attack penetration depth. At the end, the paper is concluded by giving an effect of “water to cement ratio” and “cover to diameter ratio” on the initiation and propagation of corrosion and residual life of corroded beam specimen is graphically represented.
Escrita e reescrita do gênero textual memória literária: estratégias para a melhoria da coesão e coerência
Authors: Kaodoinski Fabiana , Paviani Neires Maria Soldatelli
Published: May 2018

O presente artigo trata de um estudo de caso que visa a analisar a versão inicial de um texto produzido de acordo com o gênero memória literária, a fim de verificar possibilidades de elaboração de estratégias que auxiliem na melhoria da coesão, da coerência e da concretude textuais no processo de reescrita desse texto, até obter-se uma versão final, conforme proposta de sequência didática. Para tanto, serão utilizados como principais referenciais teóricos Bronckart (2003, 2006), Dolz, Noverraz e Schneuwly (2004), Antunes (2005), Koch e Travaglia (2005, 2008), Guedes (2009), Koch (2012), entre outros. A análise buscou gerar contribuições às práticas de produção de gêneros textuais no ambiente escolar, fornecendo subsídios para que o docente possa promover situações de aprendizagem que instrumentalizem os alunos a produzirem e a reescreverem seus textos de modo a observar os fatores de coesão e de coerência. A partir do estudo, foi possível perceber que o trabalho, por parte do professor, utilizando gêneros textuais, sequências didáticas e tendo como base conceitos referentes à textualização e ao sentido do texto mostra-se como um modo de, na aula de língua materna, realizar atividades que ampliam as habilidades dos alunos.
New taxonomic and conservation status of Ossiculum (Vandeae, Orchidaceae), a highly threatened and narrow-endemic angraecoid orchid from Central Africa
Authors: Simo-Droissart Murielle , Stévart Tariq , Sonké Bonaventure , Mayogo Sandrine , Kamdem Narcisse , Droissart Vincent
Published: May 2018

In the context of producing a revised phylogenetic Linnean taxonomy of angraecoid orchids, the monotypic and narrow-endemic genus Ossiculum is synonymised with Calyptrochilum. Accordingly, a new combination in Calyptrochilum is proposed for Ossiculumaurantiacum. The morphological and DNA-based evidence for this transfer is discussed. Moreover, Calyptrochilumaurantiacum is here firstly reported outside Cameroon, with a record from the Republic of the Congo. The Red List conservation status of this species is reassessed and it is to be downgraded from “Critically Endangered” (CR) to “Endangered” (EN), following the recent discovery of additional subpopulations in Cameroon.
Deciphering the sexual diploid members of the Boechera suffrutescens complex (Brassicaceae, Boechereae)
Authors: Morin David P. , Alexander Patrick J. , Beck James B. , Windham Michael D. , Bailey C. Donovan
Published: May 2018

Boecherais a model genus that is of particular interest for understanding apomixis due to the presence of numerous apomictic diploid lineages that are tightly correlated with hybridisation events.Boecheraincludes many narrowly distributed endemics and apomictic hybrid lineages that obscure morphological boundaries amongst taxa. In this study, we focus on theBoecherasuffrutescenscomplex, a phylogenetically well-supported but taxonomically complex north-western United States clade whose diploid species currently include the widespreadB.suffrutescensand two narrowly distributed serpentine endemics,B.constanceiandB.rollei. Using a 15-locus microsatellite dataset, we infer ploidy and sexual vs. apomictic reproduction for all individuals and then assess species limits for all sexual diploid samples. Our results support the recognition ofB.rolleiandB.constanceias distinct species and reveal three divergent sexual diploid lineages withinB.suffrutescenssensu lato. The latter three lineages exhibit geographic, genetic and morphological coherence and consequently warrant recognition at the species rank. These includeBoecherasuffrutescenss.s., which is restricted to Idaho and eastern Oregon,Boecherabotulifructa, a newly described species distributed along the Cascade Mountain Province from Lassen County, California north to Deschutes County, Oregon and the heretofore dismissed speciesBoecheraduriuscula(basionym ≡Arabisduriuscula), which occurs along the Sierra Nevada Province from Plumas County southwards to Fresno County, California. Our data also reveal substructure inB.constanceithat is likely attributable to the highly fragmented distribution of its serpentine habitat. This refined taxonomic framework for theB.suffrutescenscomplex enhancesBoecheraas a model system, adds to our knowledge of speciation in edaphically extreme environments and provides information on ongoing conservation efforts for these taxa.