bluuebunny/crossref_metadata_2025_split huggingface dataset:
Methodical Approaches to Estimate Hotel Facilities’ Efficiency
Authors: NIKOLSKAYA Elena Yurievna , ANZOROVA Svetlana Petrovna , POTAPOV Sergey Victoroviсh , DEKHTYAR Galina Maxovna , LEBEDEV Kostyantyn Anatol'evich 
Published: April 2019

The article deals with the development of approaches aimed at increasing the competitiveness of hotel business operators in present-day conditions. It is revealed that there is no uniform approach to a comprehensive assessment of hotel facilities operating efficiency. The proposed scheme of grouping of indicators for assessing the operation effectiveness of the hotel business according to criterial directions makes it possible to define functional and estimated indicators.
The dynamics analysis of hotel facilities’ operating efficiency is carried out based on clusters within groups of functional and estimated indicators as well as within criterial directions, which allowed uncovering the content of the problems arising before executives during search for ways to enhance operating efficiency of the hotel facilities. The article offers a clear organization of the analytical process to identify the features of the hotel enterprises’ status and development in the context of individual groups, as well as to carry out qualitative and effective economic analysis.
Traffic Infrastructure as an Impulsive Factor for Development of Tourism in Kosovo
Authors: RAMADANI Ibrahim , ÇELA Tomor 
Published: April 2019

Traffic and tourism are two most important branches of the economy, representing a synonym for each other. The word tourism itself means traffic or traveling, hence traffic and tourism are closely related. Through traffic many areas, being them touristicaly receptive or emitive, are connected, resulting in functioning of the demand-offer occurrence. The level of traffic development therefore determines the level of touristic movement onto certain region. Construction of the roads and extention of its network enables tourists to be closer to touristic motifs and, on the other hand investors are being offered the opportunity for building receptive capacities.
Extension of the road network in Kosovo, as well as in majority of the world countries, is conditioned by physico-geographic and socio-economic factors. According to the world classification for road network density of 1000 km² lists Kosovo within a group of countries with an average stage of road development, along with some countries from the Southern Europe. This level of traffic organization is automatically being reflected into the development of tourism.
This study aims to evaluate the development level of the road network and the tourism potential offered by Kosovo; components that correlate with each other, as the development of tourism depends from the level of traffic development. In addition to the expansion and modernization of the road network, many natural and anthropogenic values are turning into important touristic sights as well. Hence, traffic in many world countries, as well as in Kosovo is reflecting positively into development of tourism as an important economic branch.
Modeling and Optimization of Socio-Economic Aspects for the Development of Tourism
Authors: KULAKHMETOVA Gulbaram A. , SHCHERBAKOVA Nadiia A. , TSYPKO Victoria V. 
Published: April 2019

The paper deals with the variants of providing digital nomadism with tourist services and service under conditions of global informatization. In order to increase the mobility of this category of tourists, the authors offered a model of information support in accordance with the strategy of global geoinformation supporting of travel infrastructure. The navigation system of information depository is focused on the localization of life support system points with optimal combination of infrastructure objects. For filling the information depository of tourist destination determination and annotation of most significant objects and access points to global tourist system of informatization have been carried out. When choosing the above-mentioned objects, the authors proceeded from the following founding principles: accessibility of objects to Internet system sources; consumer preferences; security. To ensure quality of tourist services and service the analysis of the state of global tourist information system infrastructure is carried out in the paper. Following the findings, proposals for the implementation of information depository model are developed. The markers of system orientation in space providing the link of object location with geoinformation field are included in the depositary information field. In general, the offered model, according to authors, will contribute to comfortable and safe movement of digital nomads on tourist route.
Determinants of Establishing a Tourist Environment Towards Distinctive Entrepreneurship on Pedicab Transportation
Authors: PANJAITAN Mangasa 
Published: April 2019

The purpose of this research was Determinants of Establishing a Tourist Environment towards Distinctive Entrepreneurship on Pedicab Transportation. The Purpose of this research is knowing Determinants of Establishing a Tourist Environment towards Distinctive Entrepreneurship on Pedicab Transportation. It was motorcycles who produced from BSA of United Kingdom-made 350-500 cc. The problem is the tendency of lost their potential customers because of the competition with the online transportation that it grown rapidly. A sample of 97 respondents from the people was considered for this research. Limeshow sampling technique was used to select customers were purposively sampled. The study concluded that psychological factors have a positive effect but not significant (motivated, perception) and attitude and behavior have significant, in other hand learning has a negative effect on consumer’s decision in Pedicab Transportation.
The Effect of Business Environment and Innovation Spirit on Competitive Advantages and Implications on Marketing Performance of Ulos Weaving in North Sumatra
Authors: SIHOMBING Nikous Soter , SIHOMBING Anton 
Published: April 2019

The purpose of this study is to obtain empirical evidence and find clarity of phenomena and conclusions about the influence of business environment and innovation spirit to competitive advantage and its implications on marketing performance. This research uses descriptive and verification method, with data analysis technique of Structural Equation Modeling (SEM) LISREL program, that is collecting, presenting, analyzing, doing model measurement, and hypothesis testing, and making conclusion and suggestion. The population is owner / leader of SMI weaving ulos which is targeted group by Industry and Trade Office of North Sumatera Province, while sample selection is done proportional cluster stratified random sampling and sample determination by Slovin formula. The results of this study showed that the business environment, innovation spirit, competitive advantage, and overall marketing performance are in good category. Similarly, the verify analysis proves empirically that (1) the business environment and innovation spirit significantly and positively affect the simultaneous competitive advantage, where the innovation spirit has a dominant influence, (2) the business environment has a significant and positive influence on the competitive advantage, (3) innovation spirit significantly and positively influence to competitive advantage, (4) competitive advantage significantly and positively influence to marketing performance.
Human-robot interaction: How do personality traits affect attitudes towards robot?
Authors: Morsunbul Umit 
Published: April 2019

The robot technology seems to be an important part of daily life and has shown great progress in recent years. Robots are used in a lot of parts of life. Thus, we need to think and know how robots will affect human life and how human will react to robots. This study focused on human’s attitude toward robots. The first purpose of this study is to determine participants’ attitude towards robots and second is to investigate how personality traits predict their attitudes towards robots. Participants consisted of 219 (142 female and 77 male) university students. Of the participants were university students and their age was between 18-26 years old (mean age=20.54, SD=1.22). Negative Attitude towards Robot Scale and Quick Big Five Personality Test were used to collect data. Results indicated that gender, extraversion and openness to experience are important factors for participants’ attitude towards robots. Considering speed technological development we need more researches to evaluate correctly human-robot interactions. ÖzetRobot teknolojisi günlük yaşamın önemli bir parçası olarak görünmektedir ve son yıllarda büyük ilerleme göstermiştir. Robotlar yaşamın pek çok alanında kullanılmaktadır. Bundan dolayı robotların insan yaşamına nasıl etkide bulunduğunu ve insanların robotlara karşı nasıl teki verdiğini düşünmeye ve bilmeye ihtiyacımız vardır. Bu çalışma insanların robotlara karşı tutumları üzerine odaklanmıştır. Bu çalışmanın ilk amacı katılımcıların robotlara karşı tutumlarını belirlemek ve ikinci amacı da katılımcıların kişilik özelliklerinin robotlara karşı tutumlarını nasıl yordadığını incelemektir. Veriler 219 (142 kadın ve 77 erkek) üniversite öğrencisi katılımcıdan toplanmıştır. Katılımcıların yaş aralığı 18-26’dır (ort. yaş=20.54, SS=1.22). Robota karşı Olumsuz Tutum Ölçeği ve Hızlı Büyük Beşli Kişilik Testi kullanılmıştır. Sonuçlar katılımcıların robotlara karşı tutumunda cinsiyetin, dışadönüklüğün ve deneyimlere açıklığın önemli faktörler olduğunu göstermiştir. Hızlı teknolojik gelişmeler göz önünde bulundurulduğunda insan-robot etkileşimini doğru bir şekilde değerlendirmek için daha fazla araştırmaya ihtiyacımız vardır.
KEBIJAKAN FORMULASI SANKSI PIDANA MATI TERHADAP PELAKU TINDAK PIDANA KORUPSI BERBASIS NILAI KEADILAN
Authors: Hikmah Hikmah , Sopoyono Eko 
Published: April 2019

Tindak pidana korupsi telah menimbulkan kerusakan dalam berbagai sendi kehidupan masyarakat, Bangsa. Sehingga upaya pencegahan dan pemberantasan tindak pidana korupsi perlu dilakukan secara terus-menerus Kebijakan atau upaya penanggulangan kejahatan pada hakikatnya merupakan bagian integral dari upaya perlindungan masyarakat (social difence) dan upaya mencapai kesejateraan masyarakat (social walfare). Metode penelitian ini menggunakan pendekatan Normatif Pidana Mati terhadap pelaku koruptor berlandas pada pasal 2 ayat (2) UU No 31 Tahun 1999 Jo UU Nomor 20 Tahun 2001 tentang Pemberantasan Korupsi, soal Penjatuhan pidana mati terhadap pelaku koruptor berdasarkan bunyi pasal 2 ayat (2). Penjatuhan Pidana terhadap koruptor dapat dilakukan dalam keadaan tertentu disaat negara dalam Keadaan bahaya (bencana alam nasional dan krisis moniter). Penjatuhan pidana sebenarnya Tidaklah melanggar Hak Asasi manusia Jika dikaji secara Extentif dan teologis.Kata kunci: Kebijakan Formulasi, tindak pidana korupsi dan Pidana Mati
Single-digit 6-nm multilevel patterns by electron beam grayscale lithography
Authors: Kirchner Robert , Guzenko Vitaliy A. , Schift Helmut 
Published: April 2019

Abstract
We report on the fabrication of very high-resolution discrete four-resist-level grayscale patterns in poly(methyl methacrylate) with just 6-nm step height and down to 32-nm step width using dose-modulated, grayscale electron beam lithography and a low-contrast resist-developer system. This direct pattern writing is important for replication in high-volume manufacturing of diffractive optics. An innovative concept of unexposed auxiliary spacers helped to enhance the discrete character of the multi-level patterns. For pattern step widths between 100 and 32 nm, a transformation toward blazed gratings with increasingly continuous-slope character was obtained. All high-resolution patterns were prepared in a single exposure and development process from an initially about 30-nm thin film. The pattern roughness due to a relatively large polymer molecular weight was reduced using selective thermal annealing with only minimally affecting the global pattern shape by reflow. The results will enable further approaches toward single-digit vertical and prospectively single-digit lateral resolution grayscale patterns.
A small survey of UV-bright stars around the northern ecliptic pole: seeking new p-mode sdB variables for the TESS mission
Authors: Prins Saskia , Telting John , Østensen Roy 
Published: April 2019

Abstract
Starting in 2019, the TESS mission will monitor the northern ecliptic pole for 1 year. Data will be collected at 30-minute and 2-minute cadences, and only a limited amount of slots will be reserved for targets requiring a 20- second cadence. Only the 20-second cadence is sufficient to sample p-mode oscillations in sdB stars. From the seismic measurements obtained with the Kepler spacecraft we have gained a wealth of new insights in structural and rotational aspects of mainly g-mode variable sdB stars. Unfortunately only one traditional p-mode sdB variable was found in the main Kepler field. The TESS mission offers the opportunity to obtain more long-time-base coverage of p-mode sdB variables, especially at the ecliptic poles where the time-base will be longest. Thus far, there were only two known (p-mode) sdBVs around the northern ecliptic pole (β > 78): LS Dra and V366 Dra. In this paper we describe our efforts to find more.We compiled a new sample of 76 sdB candidates around the northern ecliptic pole, based on GALEX and optical colours, and we used low-resolution Balmer-line spectroscopy for classification. We identified 39 new sdB stars, of which 29 have characteristics (Teff > 28000 K or a composite spectrum) that may put them in the p-mode instability strip.With our 39 new sdB stars, we augmented the number of known sdB stars in the the northern ecliptic pole area (β> 73) by 46%. Besides these sdB stars, among our spectral classifications are various sdO stars, He-sdB stars, blue horizontal-branch stars, white dwarfs, cataclysmic variables and main sequence B stars. We obtained time-resolved photometry of most of the p-mode sdB candidates, and found one new sdBV, J19384+5824, with a moderately high pulsation amplitude of ≥ 9 mmag.
Pre-operative laparoscopic staging of gastric cancer in patients who are candidates for neo-adjuvant chemotherapy: A Cross Sectional Study
Authors: Ghanadi Kourosh , Mahmoudvand Hormoz , Bakhtiari Ali , Gorji Mojtaba , Moradi-kor Nasroallah , Tarahi Mohamad Javad , Garmsiri Mahshid , Obeidavi Zia 
Published: April 2019

AbstractObjectiveThe aim of this study is to evaluate the laparoscopic method in gastric cancer staging before surgery in patients undergoing Neo-adjuvant chemotherapy.MethodsThis was a cross-sectional study on patients with T3-T4 and node positive non-metastatic gastric adenocarcinoma who was candidates for neo-adjuvant chemotherapy. The patients were excluded from the study when they were not in the condition to continue the study. All eligible patients underwent metastases work up by abdominal, pelvic and chest CT scans and then received neo-adjuvant chemotherapy. Pre-operative laparoscopy was performed before definitive surgery. The collected data was analyzed using SPSS software. The statistical significance, sensitivity, specificity and predictive values were calculated from this data.ResultsIn this study, out of 50 patients, 26 (52%) were male. The mean age of the patients was 62.44 ± 12.136 years. Most tumors were located in one-third distal of stomach (21 patients, 42%). The accuracy of the laparoscopic method, to determine the degree of involvement of the lymph nodes, revealed that the method had a sensitivity of 84%, a specificity of 47.62%, a positive likelihood ratio (PLR) of 1.6, a negative likelihood ratio (NLR) of 0.33%, a positive predictive value of 65.62% and a negative predictive value of 71.43%. The accuracy of the laparoscopic method, regarding determining the presence or absence of metastasis, revealed that the method had a sensitivity, specificity, positive predictive value, and a negative predictive value of 100%.ConclusionBased on the evidence of this study, and other studies in this field, it seems that the use of a step-by-step combination methods in gastric cancer staging would be logical. Alone, no singular method would be sufficient in providing the physician with sufficient information to successfully stage the tumor and thus determine the appropriate treatment. Therefore, the combination of methods should be used which, in view of the economic constraints of health systems, would be recommended for high-risk patients for metastasis (N+/ T3-T4), diagnostic pre-operative laparoscopy.
Next-generation reference intervals for pediatric hematology
Authors: Zierk Jakob , Hirschmann Johannes , Toddenroth Dennis , Arzideh Farhad , Haeckel Rainer , Bertram Alexander , Cario Holger , Frühwald Michael C. , Groß Hans-Jürgen , Groening Arndt , Grützner Stefanie , Gscheidmeier Thomas , Hoff Torsten , Hoffmann Reinhard , Klauke Rainer , Krebs Alexander , Lichtinghagen Ralf , Mühlenbrock-Lenter Sabine , Neumann Michael , Nöllke Peter , Niemeyer Charlotte M. , Razum Oliver , Ruf Hans-Georg , Steigerwald Udo , Streichert Thomas , Torge Antje , Rascher Wolfgang , Prokosch Hans-Ulrich , Rauh Manfred , Metzler Markus 
Published: April 2019

Abstract

Background
Interpreting hematology analytes in children is challenging due to the extensive changes in hematopoiesis that accompany physiological development and lead to pronounced sex- and age-specific dynamics. Continuous percentile charts from birth to adulthood allow accurate consideration of these dynamics. However, the ethical and practical challenges unique to pediatric reference intervals have restricted the creation of such percentile charts, and limitations in current approaches to laboratory test result displays restrict their use when guiding clinical decisions.

Methods
We employed an improved data-driven approach to create percentile charts from laboratory data collected during patient care in 10 German centers (9,576,910 samples from 358,292 patients, 412,905–1,278,987 samples per analyte). We demonstrate visualization of hematology test results using percentile charts and z-scores (www.pedref.org/hematology) and assess the potential of percentiles and z-scores to support diagnosis of different hematological diseases.

Results
We created percentile charts for hemoglobin, hematocrit, red cell indices, red cell count, red cell distribution width, white cell count and platelet count in girls and boys from birth to 18 years of age. Comparison of pediatricians evaluating complex clinical scenarios using percentile charts versus conventional/tabular representations shows that percentile charts can enhance physician assessment in selected example cases. Age-specific percentiles and z-scores, compared with absolute test results, improve the identification of children with blood count abnormalities and the discrimination between different hematological diseases.

Conclusions
The provided reference intervals enable precise assessment of pediatric hematology test results. Representation of test results using percentiles and z-scores facilitates their interpretation and demonstrates the potential of digital approaches to improve clinical decision-making.
Establishment of an international autoantibody reference standard for human anti-DFS70 antibodies: proof-of-concept study for a novel Megapool strategy by pooling individual specific sera
Authors: Dellavance Alessandra , Baldo Danielle C. , Zheng Bing , Mora Rodrigo A. , Fritzler Marvin J. , Hiepe Falk , Rönnelid Johan , Satoh Minoru , Garcia-De La Torre Ignacio , Wener Mark H. , Chan Edward K.L. , Andrade Luis E.C. 
Published: April 2019

Abstract

Background
International autoantibody standards, traditionally based on material obtained from plasmapheresis of single subjects, represent individual immune response and may not comprehend the heterogeneity of the general population. The anti-DFS70 autoantibody yields a characteristic dense fine speckled (DFS) nuclear pattern on indirect immunofluorescence assay on HEp-2 cells (HEp-2 IFA) and speaks against autoimmunity. We propose a novel strategy for developing autoantibody reference standards, based on stepwise pooling of serum samples from hundreds of individuals with anti-DFS70 antibodies.

Methods
Within a 2-year period, serum samples were selected from routine HEp-2 IFA according to the following criteria: DFS HEp-2 IFA pattern at titer ≥1:640; anti-DFS70 reactivity in three analyte-specific tests (Western blot [WB], enzyme-linked immunosorbent assay [ELISA] and chemiluminescent immunoassay [CLIA]). Aliquots of individual samples were combined into progressively larger pools with stepwise validation of intermediary pools as for individual samples. Validated intermediary pools were merged into a final pool for lyophilization.

Results
A total of 741 validated samples yielded a 750 mL final pool that was lyophilized into thousands of 200 μL-aliquots. Reconstituted aliquots yielded the expected anti-DFS70 reactivity in ELISA, CLIA and WB, as well as high-titer DFS HEp-2 IFA pattern. The appropriate anti-DFS70 reactivity of the lyophilized pool was confirmed by seven international expert centers, using HEp-2 IFA, ELISA, WB and immunoprecipitation.

Conclusions
This proof-of-concept study provides an innovative and efficient strategy to build serum reference standards for autoantibody testing. The anti-DFS70 standard will integrate the panel of standards of Autoantibody Standardization Committee (ASC, www.autoab.org), contributing to education for proper assay validation and interpretation of the DFS pattern and other HEp-2 IFA patterns.
On curvature tensors of Norden and metallic pseudo-Riemannian manifolds
Authors: Blaga Adara M. , Nannicini Antonella 
Published: April 2019

AbstractWe study some properties of curvature tensors of Norden and, more generally, metallic pseudo-Riemannian manifolds. We introduce the notion of J-sectional and J-bisectional curvature of a metallic pseudo-Riemannian manifold (M, J, g) and study their properties.We prove that under certain assumptions, if the manifold is locally metallic, then the Riemann curvature tensor vanishes. Using a Norden structure (J, g) on M, we consider a family of metallic pseudo-Riemannian structures {Ja,b}a,b∈ℝ and show that for a ≠ 0, the J-sectional and J-bisectional curvatures of M coincide with the Ja,b-sectional and Ja,b-bisectional curvatures, respectively. We also give examples of Norden and metallic structures on ℝ2n.