bluuebunny/crossref_metadata_2025_split huggingface dataset:
All-Cause Versus Complication-Specific Readmission Following Total Knee Arthroplasty
Authors: D’Apuzzo Michele , Westrich Geoffrey , Hidaka Chisa , Jung Pan Ting , Lyman Stephen 
Published: July 2017

Background:
Unplanned readmissions have become an important quality indicator, particularly for reimbursement; thus, accurate assessment of readmission frequency and risk factors for readmission is critical. The purpose of this study was to determine (1) the frequency of and (2) risk factors for readmissions for all causes or procedure-specific complications within 30 days after total knee arthroplasty (TKA) as well as (3) the association between hospital volume and readmission rate.

Methods:
The Statewide Planning and Research Cooperative System (SPARCS) database from the New York State Department of Health was used to identify 377,705 patients who had undergone primary TKA in the period from 1997 to 2014. Preoperative diagnoses, comorbidities, and postoperative complications were determined using International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes. Readmission was defined as all-cause, due to complications considered by the Centers for Medicare & Medicaid Services (CMS) to be TKA-specific, or due to an expanded list of TKA-specific complications based on expert opinion. Multivariable logistic regression analysis was utilized to determine the independent predictors of readmission within 30 days after surgery.

Results:
There were 22,076 all-cause readmissions—a rate of 5.8%, with a median rate of 3.9% (interquartile range [Q1, Q3] = 1.1%, 7.2%]) among the hospitals—within 30 days after discharge. Of these, only 11% (0.7% of all TKAs) were due to complications considered to be TKA-related by the CMS whereas 31% (1.8% of all TKAs) were due to TKA-specific complications on the expanded list based on expert opinion. Risk factors for TKA-specific readmissions based on the expanded list of criteria included an age of >85 years (odds ratio [OR] = 1.32, 95% confidence interval [CI] = 1.15 to 1.52), male sex (OR = 1.41, 95% CI = 1.34 to 1.49), black race (OR = 1.24, 95% CI = 1.14 to 1.34), Medicaid coverage (OR = 1.40, 95% CI = 1.26 to 1.57), and comorbidities. Several comorbid conditions contributed to the all-cause but not the TKA-specific readmission risk. Very low hospital volume (<90 cases per year) was associated with a higher readmission risk.

Conclusions:
The frequency of readmissions for TKA-specific complications was low relative to the frequency of all-cause readmissions. Reasons for hospital readmission are multifactorial and may not be amenable to simple interventions. Health-care-quality measurement of readmission rates should be calculated and risk-adjusted on the basis of procedure-specific criteria.

Level of Evidence:
Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
The Effect on Long-Term Survivorship of Surgeon Preference for Posterior-Stabilized or Minimally Stabilized Total Knee Replacement
Authors: Vertullo Christopher J. , Lewis Peter L. , Lorimer Michelle , Graves Stephen E. 
Published: July 2017

Background:
Controversy still exists as to the optimum management of the posterior cruciate ligament (PCL) in total knee arthroplasty. Surgeons can choose to kinematically substitute the PCL with a posterior-stabilized total knee replacement or alternatively to utilize a cruciate-retaining, also known as minimally stabilized, total knee replacement. Proponents of posterior-stabilized total knee replacement propose that the reported lower survivorship in registries when directly compared with minimally stabilized total knee replacement is due to confounders such as selection bias because of the preferential usage of posterior-stabilized total knee replacement in more complex or severe cases. In this study, we aimed to eliminate these possible confounders by performing an instrumental variable analysis based on surgeon preference to choose either posterior-stabilized or minimally stabilized total knee replacement, rather than the actual prosthesis received.

Methods:
Cumulative percent revision, hazard ratio (HR), and revision diagnosis data were obtained from the Australian Orthopaedic Association National Joint Replacement Registry from September 1, 1999, to December 31, 2014, for 2 cohorts of patients, those treated by high-volume surgeons who preferred minimally stabilized replacements and those treated by high-volume surgeons who preferred posterior-stabilized replacements. All patients had a diagnosis of osteoarthritis and underwent fixed-bearing total knee replacement with patellar resurfacing.

Results:
At 13 years, the cumulative percent revision was 5.0% (95% confidence interval [CI], 4.0% to 6.2%) for the surgeons who preferred the minimally stabilized replacements compared with 6.0% (95% CI, 4.2% to 8.5%) for the surgeons who preferred the posterior-stabilized replacements. The revision risk for the surgeons who preferred posterior-stabilized replacements was significantly higher for all causes (HR = 1.45 [95% CI, 1.30 to 1.63]; p < 0.001), for loosening or lysis (HR = 1.93 [95% CI, 1.58 to 2.37]; p < 0.001), and for infection (HR = 1.51 [95% CI, 1.25 to 1.82]; p < 0.001). This finding was irrespective of patient age and was evident with cemented fixation and with both cross-linked polyethylene and non-cross-linked polyethylene. However, the higher revision risk was only evident in male patients.

Conclusions:
There was a 45% higher risk of revision for the patients of surgeons who preferred a posterior-stabilized total knee replacement compared with the patients of surgeons who preferred a minimally stabilized total knee replacement.

Level of Evidence:
Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
Molecular identification of the fish parasite Lernaea
Authors: Pallavi B. , Shankar K. M. , Abhiman P. B. , Ahmed Iqlas 
Published: July 2017

Isolates of the fish parasitic copepod Lernaea from four different freshwater fishes viz., catla (Catla catla), guppy (Poecilia reticulata), platy (Xiphophorus naculatus) and gold fish (Carassius auratus) were selected for the study. The isolates had considerably differing anchor shapes and were likely to be grouped as different species. Partial nucleotide sequences of the 18S and 28S rDNA regions of the Lernaea isolates were determined. Phylogenetic trees generated by the neighbour joining method revealed that the Lernaea isolates examined in this study were of similar genotype and were identified to be Lernaea cyprinacea.
PENGEMBANGAN MODUL MATA KULIAH PENILAIAN PEMBELAJARAN SOSIOLOGI BERORIENTASI HOTS (HIGHER ORDER THINKING SKILLS)
Authors: Pratiwi Poerwanti Hadi 
Published: July 2017

Penelitian ini bertujuan untuk mengembangkan modul mata kuliah penilaian pembelajaran sosiologi berorientasi HOTS (Higher Order Thinking Skills). Penelitian menggunakan metode Research and Development (R&D) dengan 4-D model yang dikembangkan oleh Thiagarajan, Semmel dan Semmel yang dimodifikasi menjadi 3-D model meliputi: tahap pendefinisian (define), tahap perancangan (design), dan tahap pengembangan (develop). Instrumen penelitian menggunakan lembar validasi ahli dan angket respon mahasiswa. Analisis data menggunakan teknik deskriptif kuantitatif. Hasil penelitian menunjukkan bahwa: 1) berdasarkan penilaian ahli materi mencakup aspek struktur modul, organisasi penulisan materi, dan bahasa, prosentase skor sebesar 83,33 yang artinya modul sangat layak digunakan. 2) berdasarkan angket respon mahasiswa, rata-rata skor sebesar 83,89 yang berarti modul sangat layak digunakan sebagai bahan ajar praktik penyusunan instrumen penilaian HOTS.
Pengembangan lembar kerja siswa berbasis kontekstual berorientasi penalaran saintifik
Authors: Lamapaha Yulia Florenty 
Published: July 2017

AbstrakPenelitian ini bertujuan untuk mengembangkan lembar kerja siswa berbasis kontekstual yang berorientasi pemberdayaan penalaran saintifik siswa. Penelitian dilakukan menggunakan metode penelitian pengembangan model. Perangkat pembelajaran yang dikembangkan dalam penelitian ini adalah silabus, RPP, LKS berbasis kontekstual, instrumen penilaian penalaran saintifik siswa. Perangkat pembelajaran dikembangkan dalam konteks materi ekosistem pantai berbatu. Hasil penelitian menemukan bahwa lembar kerja siswa berbasis kontekstual ini dinilai baik pada semua indikator penilaian yang dilakukan oleh validator (ahli media pembelajaran, ahli materi pembelajaran, guru biologi dan teman sejawat). LKS berbasis CTL materi ekosistem pantai berbatu yang memenuhi kriteria ekosistem atas dasar komponen penyusunnya berpengaruh meningkatkan penalaran saintifik siswa karena menggunakan sintaks CTL yang benar, terlihat pada nilai siswa yang mengalami peningkatan ditinjau dari skor pre-test dan post-test sebelum dan sesudah menggunakan LKS berbasis CTL yang dikembangkan, serta terdapat perbedaan yang signifikan pada data post-test hasil belajar siswa pada kelas eksperimen dan kelas kontrol.Kata Kunci: LKS, CTL, Penalaran Saintifik DEVELOPING OF STUDENT WORKSHEET CONTEXTUAL BASED REASONING SCIENTIFIC ORIENTED AbstrackThis research aims to develop a contextual-based student worksheet empowerment oriented student scientific reasoning. The study was conducted using the method of model development research. Learning tools developed in this study are the syllabus, lesson plans; worksheets based contextual, attitude assessment instruments and scientific reasoning of students. The device was developed in the context of learning materials rocky shore ecosystems. The results found that the contextual-based Student worksheet is considered good in all indicators of assessment conducted by the validator (learning media expert, expert learning materials, biology teachers and peers). Student worksheet ecosystem-based contextual material rocky shore ecosystems that meet the criteria on the basis of its constituent components increased the students' scientific reasoning for using contextual syntax right, looks at the value of students who have increased in terms of the scores of pre-test and post-test before and after use student worksheet developed contextually based, and there are significant differences in the data post-test results of students in the experimental class and the control class.Kata Kunci: LKS, CTL, Scientific Reasoning
KEANEKARAGAMAN ANGGREK ALAM DAN KEBERADAAN MIKORIZA ANGGREK DI DUSUN TURGO PAKEM, SLEMAN YOGYAKARTA
Authors: Sugiyarto Lili , Umniyatie Siti , Henuhili Victoria 
Published: July 2017

Penelitian ini bertujuan untuk melihat keanekaragaman, mikoriza simbion, dan keberadaan mikoriza di akar anggrek alam di Dusun Turgo Pakem Yogyakarta. Metode yang digunakan dengan mengidentifikasi jenis anggrek, mengisolasi dan mengkarakterisasi fungi mikoriza adalah media PDA (potato dextrose agar) yang dilanjutkan dengan identifikasi setiap fungi yang diperoleh. Pengukuran faktor lingkungan abiotik meliputi faktor edafik yaitu kelembaban, pH, suhu tanah, dan mikroklimat yaitu suhu udara, kelembaban udara, dan intensitas cahaya. Infeksi mikoriza diamati dengan mengamati keberadaan fungi pada jaringan akar. Hasil pengamatan menunjukkan adanya 8 spesies anggrek alam yaitu : Zeuxine petakinensis, endrobium sagittatum, Bulbophyllum chaetonium, Dendrobium mutabile, Eria retusa, Eria oblitterata, Pholidota carnea, Rhomboda velutina. Beberapa anggrek spesies di hutan tersebut dalam keadaan dorman sehingga tidak dapat diidentifikasi. Keberadaan mikoriza dari hasil pengamatan mikroskopis menunjukkan bahwa pada umumnya akar anggrek spesies yang ditemui berasosiasi simbiose dengan mikoriza yang masing-masing menunjukkan jenis fungi yang berbeda. Fungi yang dapat didentifikasi diantaranya termasuk dalam genus Rhizoctonia, Glomus, Chaetonium, Scopulariopsis dan TrichodermaKata kunci: spesies anggrek, mikoriza, fungi anggrek Abstract This research aims to identify the diversity of orchids and to find the existence of mycorrrhizal symbiont in wild orchid roots in Turgo village, Pakem Sleman. The samples of orchids and orchid roots were done by taking samples in Puspa Forest of Turgo Village, Pakem Sleman Yogyakarta. This research were exploration research on existing orchids’ diversity. The methods that have been used to identify the existing orchid species in the forest, isolation, and characterization mycorrhizal fungi is PDA (potato dextrose agar). Measurement of environmental factors for including edhapic factors were humidity, pH, soil temperature, and microclimate factors were air temperature, air humidity, and light intensity. The mycorrhizal infection was done by observing of mycorrhizal fungi existence. The results of the research are retrieved 8 species of orchids are Zeuxine petakinensis, Dendrobium sagittatum, Bulbophyllum chaetonium, Dendrobium mutabile, Eria retusa, Eria oblitterata, Pholidota carnea, Rhomboda velutina. Some orchids in the forest are dormant, therefore it couldn’t be identified. The mycorrhizal symbiosis from microscopic characterization had been known as different on each mychorriza. The mycorrhizal fungi that have been identified were genus of Rhizoctonia, Glomus, Chaetonium, Scopulariopsis and Trichoderma. Keywords: orchid species, mychorrhiza, orchid fungi
STUDI PREPARASI DAN KARAKTERISASI SEL SURYA BERBASIS TITANIA MELALUI PENYISIPAN LOGAM TEMBAGA (CU) DENGAN BERBAGAI VARIASI MASSA PADA LAPISAN AKTIF TITANIA
Authors: Prasetyowati Rita 
Published: July 2017

Abstrak Penelitian ini bertujuan untuk mengetahui pengaruh penyisipan logam tembaga (Cu) dengan berbagai variasi massa terhadap struktur morfologi dan komposisi bahan pada permukaan lapisan titania, absorbansi lapisan titania, resistansi lapisan titania, dan performansi sel surya berbasis titania. Konduktivitas yang dimaksud adalah pengukuran resistansi lapisan. Sedangkan performansi sel surya yang dimaksud adalah tegangan sel surya. Preparasi lapisan titania-tembaga (TiO2-Cu) menjadi bentuk pasta dilakukan dengan menggunakan metode sol-gel. Pasta titania-tembaga dideposisikan pada elektroda transparan (Indium Tin Oxide) dengan metode doctor blade. Dilakukan lima variasi massa Cu yang disisipkan pada lapisan titania, yaitu 0,050 gram (Sampel 1); 0,075 gram (sampel 2); 0,100 gram (sampel 3); 0,0125 (sampel 4) dan 0,0150 (sampel 5). Masing-masing variasi massa Cu tersebut disisipkan pada 1 gram TiO2. Karakterisasi SEM dan EDS dilakukan pada lapisan titania-tembaga untuk mengetahui struktur morfologi dan komposisi bahan lapisan. Absorbansi lapisan dikarakterisasi dengan menggunakan UV-Visible spektrometer. Pengukuran resistansi lapisan dilakukan dengan menggunakan Jembatan Wheatstone. Sedangkan performansi sel surya dilakukan dengan mengukur tegangan sel surya.Kata kunci : titania, tembaga, morfologi permukaan, absorbansi, resistansi, sel surya Effect of Cu Insertion With Variation Of Mass on Titania Active Layer To Morphological Structure, Resistance, And Solar Cells Performance Abstract This study aims to determine the effect of insertion of copper (Cu) with a variety of mass to structure morphology and composition of surface layer of titania, absorbance of titania, resistance of titania and solar cell performance based on titania.. Solar cell performance is characterized from voltage of solar cell. Preparation of titania-copper layer (TiO2-Cu) to form a paste was made using a sol-gel method. Pasta titania-copper deposited on a transparent electrode (Indium Tin Oxide) with a doctor blade method. There were five variations of Cu mass pasted on layers of titania, namely 0,050 grams (Sample 1); 0,075 grams (sample 2); 0,100 grams (3 samples); 0.0125 (sample 4) and 0.0150 (sample 5). Each variation of the mass of Cu is inserted in one gram of TiO2. SEM and EDS characterization performed on layers of titania-copper to know the structure morphology and composition of the titania-copper. Layer absorbance was characterized using UV-Visible spectrometer. Resistance of titania was measured using a Wheatstone bridge. The performance of solar cells measured by measuring the voltage of the solar cell. Keywords: titania, copper, surface morphology, absorbance, resistance, solar cells
STUDYING THE INSURANCE COMPANY CUSTOMERS PREFERENCES ON THE BASIS OF THE CONSENT CRITERIA USING CHAID-ANALYSIS
Authors: ЦОЙ Марина , . TSOI Marina , ЩЕКОЛДИН Владислав , SHCHEKOLDIN Vladislav 
Published: July 2017

The article considers modern trends in the insurance market development in the Russian Federation, and reviews the main insurance products and the dynamics of their implementation over the past few years. The authors identify the necessity for improving the insurance services quality, active work with consumers, and development of targeted packages of services, corresponding to the specific needs of individual customer segments.
Based on the case of regional insurance company operating on the local insurance market in the city of Novosibirsk, the article analyzes the socio-demographic and economic characteristics and their impact on the probability of choosing insurance products. Using Pearson's chi-squared test, the authors have accomplished statistical review of 30 hypotheses in order to reveal the relationship between the characteristics of consumers and their choice of various insurance products.
Using CHAID-analysis, the one of the most popular technologies for data mining, allowed authors to distinguish different homogeneous groups of consumers for each of the insurance products considered. Based on the study, the authors have constructed classification schemes of insurance services consumers. This led to the conclusion that age and marital status are most significant consumer characteristics for the segmentation. On the other hand, the study of the constructed consumer classification schemes shows that such indicators as “children" and "income" practically do not influence the choice of insurance products.
Also, a study using CHAID-analysis made it possible to determine which types of insurance services allow the most effective joint combinations. In turn, it allowed to form four specially selected packages consisting of several insurance products to maximize the satisfaction of the company's customers.
IMPLEMENTING THE QUALITY MANAGEMENT PRINCIPLE OF "LEADERSHIP" IN TOURISM ORGANIZATIONS
Authors: КОЛОЧЕВА Влада , KOLOCHEVA Vlada 
Published: July 2017

In modern conditions, the tourism sector development involves approaches aimed at better satisfying the consumers’ requirements, who want to be confident in the quality and safety of tourist product. One of the approaches to increase customer satisfaction is the introduction and operation of quality management systems (QMS) in organizations based on seven principles. The QMS refers to the part of the organization's management system aimed at quality.
The article deals with issues of the essence of the quality management principle of "Leadership" and ways of its application in tourist organizations. This principle is the most important, since leadership is an integral part of the quality management system and its trigger mechanism, this is why the system functions and develops. The article is focused on studying and analyzing the provisions of ISO international standards for quality management systems with the subsequent adaptation to the activities of tourist organizations, such as tour operators, travel agents, and organizations rendering services guides, guides and interpreters and instructors.
Based on the research results, the author examines and analyzes the ways to apply the quality management principle of "Leadership" in tourist organizations. On the background of the provisions of ISO 9000 standard the author reveals the main actions that must be performed by the management of the organization and advantages that the organization can obtain due to it. The article considers the requirements of ISO 9001 standard regarding top management commitment. The author also examines a methodology including a list of questions on the quality management principles. It allows to determine the level of maturity of the QMS and to develop measures to improve the activities. Based on the provisions of ISO 9004 standard, the article proposes the processes for the adopting and maintaining an organization’s effective strategy and policies.
ANALYZING THE EDUCATIONAL MARKET ENVIRONMENT AT THE REGIONAL LEVEL
Authors: ДОЛГОВ Алексей , DOLGOV Aleksey , ЩЕКОЛДИН Владислав , SHCHEKOLDIN Vladislav 
Published: July 2017

The article analyses the higher educational market in the sphere of socio-economic training in Novosibirsk region. The authors identify and analyze the factors affecting the enrollment of the first year students on a contract basis, and determine the market share of the leading universities in Novosibirsk region in socio-economic areas of training for full-time studies in bachelor's programs.
The authors have analyzed the information of admission commissions of the leading universities in Novosibirsk region, obtained from their sites. Based on this information they determine the factors affecting the figures of enrolling on the commercial form of training: the minimum score of USE determined by each university for entry, the availability of state-funded place, the training cost, the availability of a hostel and the development of the social infrastructure of the university, the university marketing strategy effectiveness. It is noted that the existing market of educational services is characterized by a transition from quantitative indicators of recruitment of students to financial ones that affect the stability of the educational organization. The authors define the market shares, which are occupied by the largest higher educational institutions of the region. It is established that the reduction in the number of budget places and the increase in the number of places on a contract basis is one of the features of the educational services market. The work establishes and analyzes the statistical dependence between the number applicants and the number of first year students.
The modern educational market forces the universities to develop the system of vocational guidance activities: open days, Olympiads for schoolchildren on the site of the university, vocational guidance meetings in schools, excursions to the university, sports competitions between schoolchildren and students, the preparation of schoolchildren for Olympiads by the teachers of the university, the e-learning system for schoolchildren, the answers the questions of entrants in social networks. Without such vocational guidance activities the enrollment of students on a contract basis becomes extremely difficult.
The article examines the market of educational services in socio-economic areas of training under bachelor's programs, and allocates the factors influencing its formation.