bluuebunny/crossref_metadata_2025 huggingface dataset:
State assessment for bearing rotor static unbalance based on Welch-PSD and SAE
Authors: Liu Xue , Ma Jian , Zhang Tong
Published: September 2018

Bearings are an important part of mechanical equipment and it will cause a series of mechanical failures once the malfunction of bearing occurs. Rotor unbalance is the most common type of bearing failure; thus the assessment of bearing rotor unbalance is essential to maintain the normal operation of mechanical. In this paper, a method based on Welch power spectral density estimate (Welch-PSD) and stacked automatic encoder (SAE) is proposed to achieve state assessment of bearing rotor static unbalance by processing the two-way vibration signals collected by the acceleration sensor installed in the vertical and horizontal directions of the bearing. Firstly, the Welch-PSD method is used to decompose the vibration signal to obtain the power spectral density, and the vibration power of the working frequency is taken as the feature. Then, the Stacked Auto-Encoder method is introduced to assessment the bearing rotor unbalance state. This paper designs an experiment of rotor unbalance fault in different degree to verify the accuracy of the designed method. The experimental results show that the Welch-PSD method can accurately extract the rotor unbalance fault feature. In addition, the SAE neural network can apply the fault feature to accurately assessment the bearing rotor unbalance degree.
Position error estimation of the underwater coordinate measurement machine using artificial neural network
Authors: Shimono Soji , Hagino Yuki , Nishizawa Uichi , Toyama Shigeki
Published: September 2018

Position error of the underwater coordinate measurement machine (UWCMM) is estimated using an artificial neural network (ANN). The UWCMM has a multi joint serial link and the position of an underwater robot attached to the tip is obtained from kinematics of the link. However, the inaccuracy of the kinematics model creates a position error. In order to improve measurement accuracy, an ANN model which estimate position error of the kinematics of the UWCMM using joint angles data is constructed. The ANN model was trained by 462 data and verified by 42 data. The error estimation result of the trained ANN reduces maximally 66.5 % of the average of the position error of the verification data.
Influence of rubber ageing on damping capacity of rubber vibration absorber
Authors: Polukoshko Svetlana , Martinovs Andris , Zaicevs Edgars
Published: September 2018

The vibration dampers, shock absorbers, seismic isolation, bearing seals, compensation devices are widely applied in civil engineering, machine manufacturing and shipbuilding, aviation and aerospace engineering. For these details fabrication elastomeric materials are used. Rubber and rubber-like materials (elastomers) have the capability of absorbing input energy much better than other engineering materials. Elastomeric materials give many engineering advantages due to their high elasticity, good dynamic properties, low volume compressibility, a linear relationship between stress and strain at small and middle deformation, resistance to aggressive environmental factors. The disadvantage of elastomeric materials is ageing, i.e. changing their mechanical properties over time and lowering their operational capability. In given paper the influence of ageing of elastomeric materials on the damping properties of shock absorbers is considered based on the mechanical models of elastomers - Maxwell and Burgers modes.
Research of damping influence for the transmission of energy in multi-masses systems
Authors: Warczek Jan
Published: September 2018

The aim of the research is to determine the impact of damping on the manner of transferring the energy of vibrations from the vehicle's road wheel on the truck body. The work presents the results of simulation tests and real object. The proposed method is an effective tool for the analysis of energy transfer in mechanical systems containing flexible elements (elastic and damping).
Mathematical modelling of the rotary engine
Authors: Drbal Milan , Svida David
Published: September 2018

The rotary engine of the Wankel type is currently undergoing a renaissance in the combustion engine industry, mainly because of the simplicity of its design and high power to weight ratio. Strong reliability increases the demand in the aero industry where it is used mainly in small aircrafts such as drones. In the engine development process, there is a high demand for 1 dimensional (1D) simulation software which reduces the time of the development. The commercially available software provides a possibility of predicting the performance of the piston-reciprocating engine to a very high level of accuracy given initial conditions. As the demand for the rotary engines isn’t comparable to the piston-reciprocating engines, currently commercially available software doesn’t include the required equations for the rotary engine prediction calculations. This paper includes an approach for design of the virtual comparable piston engine, that can be used as an initial data source for the calculation of the rotary engine using commercially available software.
The Effect of Calcium Deficiency on Bone Properties in Growing Rats
Authors: Pineda-Gomez Posidia , Hernández-Becerra Ezequiel , Rojas-Molina Isela , Rosales-Rivera Andres , Rodríguez-Garcia Mario E.
Published: September 2018

Background:

In this work, the study of the physicochemical properties of the rat bones
that were fed under severe and moderate calcium depletion was carried out. Calcium depletion is a
common problem in the diet of the third world.

Objective:

Three calcium levels: 5000, 2500, and 1039 mg/kg, were used in the diets to evaluate the
influence of calcium deficiency on the bone quality by post-mortem tests.

Methods:

Inductive Coupled Plasma was used to study the elemental chemical composition of the
bones; X-ray diffraction evaluated the bone structure and crystallinity; the microstructure and architecture
were investigated using scanning electron microscopy; thermogravimetric analysis assessed
the ratio between organic and inorganic phases of bones. All of these results were correlated with
flexion and compression test determining the biomechanical properties to evaluate the bone quality.

Results:

The results showed that severe calcium depletion (75% depletion, 1039 mg/kg) was a critical
factor in the unsuitable mineralization process responsible for the deterioration of bone quality.
Bone architecture with delicate trabeculae caused the poor mechanical response. For moderate calcium
depletion (50% of the request, 2500 mg/kg), the bone quality and its mechanical behavior
showed less deterioration in comparison with bones of severe calcium depletion diet.

Conclusion:

By using this animal model, the effect of calcium depletion in bone mineralization in
rats was understood and can be extrapolated for humans.
Is Temporomandibular Joint Disc Displacement without Reduction a Plausible Cause of Condylar Hypoplasia? A Case Report
Authors: Liu Yi-Shu , Yap Adrian U-Jin , Lei Jie , Fu Kai-Yuan
Published: September 2018

Background:

The causes of mandibular condylar hypoplasia can be congenital or acquired
in nature. Cited local causes of acquired hypoplasia include trauma, infection and irradiation.
We report a case of hypoplastic condyle that was attributed to temporomandibular joint (TMJ) disc
displacement without reduction (DDwoR).

Clinical Presentation:

A 16-year-old male presented with restricted mouth opening and right TMJ
pain for 6 months. He was subsequently diagnosed with DDwoR. Conservative treatment comprising
self-care and moist-heat therapy was administered and he was followed for 27 months without
any further interventions. During this period, transitions from “normal” morphology to condylar
flattening / erosion, and eventually a re-modeled smaller “normal” right TMJ were observed.

Conclusion:

The present case provided initial support that DDwoR could be a plausible cause of
condylar hypoplasia in adolescents / young adults.
A comparative clinical study on the efficacy of Siravyadha and Agnikarma in the management of Snayugata Vata affecting Kurpara Sandhi vis-à-vis Tennis Elbow
Authors: Shettigar Dr.Saiprasad S. , Patil Dr.Uma A. , Prasad Dr. Shyam
Published: September 2018

Background: Snayugatavata (fibromyalgia) affecting Koorpara Sandhi (elbow joint) is one among pain predominant Vata Vyadhi. Tennis elbow is a musculoskeletal, degenerative disorder affecting elbow joint. Acharya Sushruta has mentioned Siravyadha (blood letting) for Snayurogas and Agnikarma (thermal cautery) as specific Chikitsa for Snayuroga.[1] As similar features are shared, the study has been taken up to see the efficacy of Siravyadha and Agnikarma affecting Koorparasandhi in comparison to tennis elbow. Objective: To study the clinical effect of Agnikarma (thermal cautery) in Snayugatavata affecting Kurparasandhi (elbow joint) vis-à-vis Tennis elbow. Method: The method used in the study is single blind clinical study with pre-test and post-test design. 40 patients suffering from Snayugatavata of either sex were selected and divided into two groups. Group A patients were subjected to Agnikarma at maximum point of tenderness and Group B patients were subjected to Siravyadha. Both modalities were done for only once and studied for 28 days. The data during the study was recorded and analysed statistically. Result: The study confirms Agnikarma and Siravyadha are effective in the treatment of Snayugatavata and later being the more effective in comparison statistically.
A Study on Fetal Biometry in third trimester in relation to Maternal Prakruti
Authors: Thomas Dr. Anju , Kanthi Dr.G M
Published: September 2018

Fetal biometry refers to the various measurements obtained from sonography which denotes the development of the fetus in a particular period of growth. These measurements describe normal growth of fetal structures and are used to estimate the age and to monitor fetal growth. The biometric measurements attain an optimum value in the third trimester and any abnormality in the range of the values in this particular period can predict fetal anomalies as well.[1] Prakruti (constitution) is the inborn character reflected on the individual which forms the basis of one’s personality.[2] It is a group of characters inherited by an individual depending on the predominance of Dosha (humor) prevailing at the time of conception and which remains with him or her throughout life.[3] Out of the many factors which influence the growth and development of fetus, Prakruti has an important role to play. Hence an effort has been made to know the influence of maternal Prakruti on fetal biometry in the third trimester of pregnancy.
An Analytical Study on Pippalyasava
Authors: S. Dr. Deepika , S. Dr. Vikram. , Rao Sangeeta , Valsan Dr.Smrithi , R. Dr. Swati
Published: September 2018

Pippalyasava is one of the important and common preparation used by practitioners for various ailments. Lot of references are available regarding Pippalyasava in classics and are abundant in market. As a part of study Pippalyasava is prepared and observed for 6 months also these samples were subjected to following analytical parameters like organoleptic characters, physical characters, chemical characters and TLC during 2nd month and 6th month to ensure the quality of the prepared sample.
Pharmaceutico- Analytical Study of Abhra Sindoora
Authors: B. Dr. Jyothi , Sobagin Dr. M. V. , Patil Dr. M.C.
Published: September 2018

Background: Abhra Sindoora[1] (ABS) is a unique Rasa Yoga with having more potent and indication in Tridoshahara, Swasa, Kasa etc. It is one of the important classical Kupipakva Rasayana containing Hingulotha Parada (purified mercury), Shuddha Gandhaka (purified sulfur) and Dhanyabhraka in 1:1:1 proportion. Aim: Pharmaceutico-Analytical study of Abhra Sindoora. Materials and Methods: Hingulotha Parada (purified mercury), Shuddha Gandhaka (purified sulfur) and Dhanyabhraka are used to prepare Kajjali and lavigated with Vatankura (leaf buds of Ficus bengalensis), Swarasa (juice) and Arka (Calotrapis procera) ksheera (milk). This Kajjali is processed by Kupipakva method. Results and Conclusion: The current trend in applied instrumental medical research encourages good medical practice, clinical and research based drug analysis. The main aim of analytical study is to find out working standards for the formulations and safe use of therapeutics. Abhra Sindoora was prepared in 48 hours with 28% yield. It was also characterized by using modern instrumental analysis like XRD, SEMEDX, EDXRF, FTIR and PARTICLE ANALYSIS. The SEM analysis evaluated that prepared Abhra Sindoora has particles in nanometers, least being 14.87nm. SEMEDX study confirmed the presence of C, O, Si, S, K, and HgM. XRD study confirmed the presence of Hg3.00S3.00 in hexagonal crystal system. The EDXRF analysis evaluated the presence of K, Ca, Ti, Mn, Fe, S, Br and Hg. FTIR analysis shows organic compounds with functional groups like secondary amines, Nitro, Carboxylic acids, Bromine, Esters, Alkines, and Iodides etc.
An approach to the clinical manifestation of Rupavriddhi Rupahani Rupantara in Avarana
Authors: . Dr. Sharanamma , Prashanth Dr. A. S. , Chavan Dr. S. G.
Published: September 2018

Ayurveda believes in different pathology which sets in different Srotas to produce different diseases. Whenever a favorable condition and situation arise, diseases will manifest. Nanatmaja Vikara, Anubandha, Gatavata and Avarana are different pathologies explained in Ayurveda. Avarana is one of the most difficult concept to understand teach and incorporate in clinical practice. It is either least observed, diagnosed or goes unidentified due to lack of skill. To understand and analyze the Avarana, Meticulous knowledge of basic concept of Ayurveda is essential. It is assumed that symptoms complex in Avarana leads to misunderstanding, wrong diagnosis and sometimes end with complications. The symptoms produced in Avarana are based on the principles of Rupahani (Karmakshaya), Rupavriddi (Karmavriddhi) and Rupantara (Anya Karma). The present article is an attempt made to have a critical clinical study of role of Avarana in the manifestation of Rupavriddhi, Rupahani, Rupantara.
Ayurvedic Management of Ankylosing Spondylitis - A Case Report
Authors: Powar Dr. Vibhu , Muttappa Dr. Totad , B Dr. Vasantha , KJ Dr. Girish , MS Dr. Rachana
Published: September 2018

Introduction: Ankylosing Spondylitis (AS) is a sero negative chronic inflammatory arthritis of unknown cause that primarily affects the axial skeleton which usually begins in the second or third decade of life with a male to female ratio of 3:1. The prevalence rate of AS in India is 0.03%. It is clinically correlated to Danda Apatanaka in Ayurveda. It is caused due to the vitiated Vata and Kapha Dosha which enters the Dhamani and causes stiffness of the body. Due to its known complications and its tendency to hamper the quality of life, there is a need for an effective Ayurvedic intervention. This report is based on a case of Ankylosing Spondylitis which presented with pricking pain over nape of the neck and low back associated with stiffness and restricted movements, swelling over nape of neck right shoulder and right side of face, associated with restricted movements of right upper limb. Methods: This case was diagnosed as Danda Apatanaka and was treated with Basti Karma, Abhyanga along with oral medications. Assessment was done before and after treatment using relevant scales. Result: After 2 weeks of treatment pain and swelling over the nape of neck, right shoulder and face resolved completely, pain and stiffness of low back reduced, pain in right upper limb reduced and patient was able to perform normal movements. Stiffness of neck still persisted. Conclusion: Ankylosing spondylitis can be effectively managed by Ayurvedic treatment modalities after proper assessment of the involved Dosha and Dhatus.
Management of Prameha with Mustadi Kwatha - A Case Study
Authors: Malshikare Dr. Akshay H. , Chikurte Dr. Sharada
Published: September 2018

Diabetes is a major health problem in whole world. In spite of many drugs available, uncontrolled diabetes remains a challenge. Moreover, some anti-diabetic drugs are on the verge of withdrawal due to its adverse effects. So, there is an acute need for a new effective and safe drug. So in this case study we used Ayurvedic medicine ‘Mustadi Kwatha’ mentioned in Bhaishajya Ratnawali in Prameha Chikitsa. A single case study was done on use of Mustadi Kwatha on Type II Diabetes Mellitus. Significant reduction was seen in blood sugar level fasting and post-prandial.
A single case report on Ocular Rhinosporidiosis
Authors: Chandran Dr.Jasna , K. Dr. Sujathamma
Published: September 2018

Rhinosporidiosis is an enigmatic disease which has been known to medicine since 1900. It is a chronic infestation caused by Rhinosporidium seeberi, which predominantly affects the mucus membrane of eye, nose and nasopharynx. We report a case of rhinosporidiosis with presentation of mass which looks like a chalazia present in left upper lid. Here the case ultimately managed by surgical resection followed by Ayurvedic treatment and antibiotic eye drops for a duration of one month. Despite it has chance of recurrence but here after an year also patient doesn’t have any complaints regarding the same. Here 24 year old female patient diagnosed with Rhinosporidiosis was advised to undergo Pratisarana followed with Bidalaka and later excision. Patient came for follow-up after 1 year, there was no recurrence as well as no complaints particular to rhinosporidiasis.
Pilonidal Sinus : Management through Guggulu Apamarga Ksharasutra
Authors: Agri Dr. Sanjay Kumar , Sharma Dr. Pankaj , Gupta Dr. Ajay Kumar
Published: September 2018

Nowadays Pilonidal Sinus (PNS) is becoming common disease in between 20-30 years of age, in men and mostly dense hairy persons. Commonly it occurs midline over the coccyx. It results in purulent discharge, pain and discomfort. In Ayurvedic practice, there are many surgeons who are practicing classical Ksharasutra management to treat PNS, which is very effective but there are some problems using classical Ksharasutra in the management of PNS, such as discomfort, burning sensation, itching and irritation due to Snuhi-ksheera. So to overcome these problems Guggulu Apamarga Ksharasutra has been used, which is very effective in curing PNS and has no complications. So patients can do their daily routine work without any pain or discomfort.
MANAJEMEN PENDIDIKAN KARAKTER BERBASIS PEMBELAJARAN PENDIDIKAN AGAMA ISLAM DI PERGURUAN TINGGI UMUM
Authors: Suparlan Suparlan , AW Syukri Fathudin
Published: September 2018

Penelitian ini bertujuan merumuskan model manajemen pendidikan karakterberbasis pembelajaran pendidikan agama Islam di perguruan tinggi umum. Penelitian inimenggunakan prosedur Research and Development (R&D) pada tahap awal, yaitu: (1)analisis permasalahan dan kebutuhan, (2) perencanaan, pengembangan. . Metode yangdigunakan adalah survei dan kajian literatur untuk menghasilkan rumusan desainmanajemen pendidikan karakter berbasis pembelajaran PAI. Teknik Delphi dilakukanuntuk mematangkan model manajemen pendidikan karakter berbasis pembelajaran PAI.Penelitian ini dilakukan di dua Perguruan Tinggi Umum yakni UPI Bandung danUniversitas Negeri Malang ( UM). Hasil penelitian menemukan desain model manajemenkarakter berbasis pembelajaran PAI dilakukan melalui (1) Perencanaan denganmenentukan tujuan organisasi dan memilih cara terbaik untuk meraihnya. (2)Pengorganisasian, adalah proses pembentukan organisasi sebagai keseluruhan, (3)Pengerakan dilakukan oleh setiap pemimpin/koordinator dalam struktur organiasi baiktingkat universitas/perguruan tinggi/rektorat, fakultas, dan mahasiswa (berbentuk timataupun tidak), dan (4). Pengevaluasian dilakukan secara simultan dan terus menerus baikdalam tingkat universitas/PT, Fakultas, dan kelas/mahasiswa baik evaluasiinternal/eksternal. This study aims to form a learning model based on learning Islamic character education inIslamic public education. This study uses the Research and Development (R & D)procedure at the initial stage, namely: (1) problem analysis and needs, (2) planning,development. The method used is a survey and literature review to produce a formulationof PAI-based character education management design. The Delphi technique wasconducted to finalize the PAI-based learning education character management model. Thisresearch was conducted in two public universities, namely UPI Bandung and Malang StateUniversity (UM). The results of the study found that the design of the PAI-based charactermanagement model was conducted through (1) Planning by determining organizationalgoals and choosing the best way to achieve them. (2) Organizing, is the process of formingan organization as a whole, (3) Dredging is carried out by each leader / coordinator in theorganizational structure at the university / college / rectorate, faculty, and student level(whether it is team or not), and (4) . Evaluation is carried out simultaneously andcontinuously both at the level, faculty, and class / student both internal / externalevaluations.
DEVELOPMENT OF INQUIRY SCIENCE ISSUES-BASED STUDENT WORKSHEET TO ADVANCE PRACTICAL SKILL AND ENVIRONMENTAL ATTITUDE IN A SEVENTH GRADE HIGH SCHOOL STUDENTS
Authors: Putri Hirmampuni Adinda , Widodo Eko , Hastuti Purwanti Widhy
Published: September 2018

The aims of this research were to (1) develop inquiry science issues-based student worksheet based which is feasible to advance students ' practical skills and environmental attitude, (2) know the students ' responses towards inquiry science issues-based student worksheet, (3) know the advancement of students ' practical skills after using the developed inquiry science issues-based student worksheet and (4) know the advancement of students ' environmental attitude after using the developed inquiry science issues-based student worksheet. Research of the model that is being conducted is 4 d model (define, design, develop, and disseminate). Data were collected using validation form, student response student worksheet, towards a questionnaire inquiry science issues observation form, practical skill observation form, pretest-posttest of practical skill, and environmental attitude questionnaire. The data were analyzed four scale analysis, percentage for practical skill and science issues inquiry learning, N-gain score, and paired sample t-test. According to results, (1) the color worksheet was feasible to advance students ' practical skills and environmental attitude; (2) Students ' responses to the worksheets developed were found very good (A); (3) The average score of practical skills after using the color worksheet was 77.87%. Gains were found between practical skill pre and post test scores. The value of the gains were 0.65, categorized as medium gains. Paired sample t-test indicated that there was significant advancement of students ' practical skills after using the developed student worksheet with the Sig. value was reported to be 0.000; (4) The average score of environmental attitude after using the color worksheet was 87.58%. The value of the gains were 0.65, categorized as medium gains. Paired sample t-test indicated that there was significant advancement of students ' environmental attitude after using the developed student worksheet with the Sig. value was reported to be 0.000.
IMPLEMENTATION OF INTEGRATED SCIENCE INSTRUCTION ASSESSMENT AS AN ALTERNATIVE TO MEASURE SCIENCE PROCESS SKILLS AND SOCIAL ATTITUDES
Authors: Sukardiyono Sukardiyono , Rosana Dadan
Published: September 2018

Curriculum 2013 requires a paradigm shift in the teachers manage learning, including assessment. Research on the implementation of integrated science instruction assessmentis an attempt to overcome the problems in science learning assessment in Junior High School. Rate the former tend to simply measure cognitive ability, so that teachers rarely pay attention to ratings on science process skills of students and social attitudes. This research aims to; (1) produce integrated science assessment practical instruction through the feasibility test in science learning class (2) to get the measure of science process skills and social attitudes of learners using instruments developed. This research is a development that adapt the model Borg and Gall (1983). Aiken's Formula V is used to analyze the instrument by the validator. This research resulted in: (1) integrated science instruction assessment practical through feasibility testing in the classroom science lessons with the following characteristics: (a) the observation sheet form checklist used by teachers to observe the science process skills of learners is only at the stage of observing, measuring, inferring, classifying, predicting, communicating as well as observing the social attitude on stage mental and neural state, of readiness to respond, organized, through experience, and  exerting a directive  (b) science process skills is not observed from the behavior of learners assessed by working the worksheet (c) the self-assessment of social attitudes among learners friends used only at the stage of evaluate; (2) the instrument has been developed fit for use because it meets the content validity by experts and reliability was good value. (3) Results of measurement using observation sheet science process skills get a very good category and the results of measuring social attitude of learners using observation sheets, self-assessment and peer assessment obtained either category on aspects of mental and neural state, of readiness to respond, organized, through experience, and  exerting a directive .
Experimental-Based Scientific Approach toward the improvement of Science Process Skill and Scientific Attitudes of Grade X Student MAN Ende
Authors: Kaleka Melkyanus , Nur Fara Dillah M
Published: September 2018

This study aimed to: 1) know the influence of the implementation of experimental-based scientific approach on physic learning toward the improvement of Science Process Skill of class X student of MAN Ende on even semester of academic year 2016/2017, 2) know the influence of the implementation of experimental-based scientific approach on physics learning toward the improvement of scientific attitude of class X student of MAN Ende on even semester of academic year 2016/2017. The research type is experimental research with the pre-experimental design and one-shot case study model. The population of the study was students of class X IPA MAN Ende which had the total of 136 students, and the sample of research was 30 students by purposive sampling technique. The data of the research sample is the score of science process skills and students' scientific attitude. T-test of one sample was used in data analysis.The research results showed that: 1) Implementation of experimental-based scientific approach on physics learning has effect to the improvement of students science process skills of class X student of MAN Ende on even semester of academic year 2016/2017, due to the normality test using chi-square test obtained χ2count (4.536) χ2table (7.814), and result of data analysis on hypothesis test is obtained t-count (2.702) t_table (1.699). 2) Implementation of experimental-based scientific approach on physics learning has effect to the improvement of science attitude of class X student of MAN Ende on even semester of academic year 2016/2017, due to by χ2 count (4.503) χ2table (7.814) and t_count (8.031) t_table (1.699) on α = 5%, dk = 29.
Experimental and numerical investigation of blade resonance in a centrifugal compressor for varying gas properties
Authors: Carsten Degendorfer , Abhari Reza S. , Vogel Klemens , Hunziker René
Published: September 2018

The blades of centrifugal compressors are exposed to unsteady forces during operation which can result in resonance response conditions and failures due to high cycle fatigue. A typical source of excitation is the unsteady fluid structure interaction between the impeller blades and the downstream vaned diffuser. Centrifugal compressors are operated with various working fluids with a wide range of applications in the power and process industry. Understanding the excitation mechanisms for different working fluids will help to design aerodynamically efficient compressors, while ensuring mechanical integrity and reducing the number of experimental design validations. A variation in working fluid properties allows investigation of the contribution of blade forcing and damping while the modal response remains unchanged. Experiments have been conducted at ETH Zurich’s radial compressor facility with a state of the art industrial compressor design. Dynamic strain gauge measurements on the impeller blades were used to determine the amplitude response, damping properties and forcing at a defined resonance condition. Two working fluids have been investigated to vary compressor flow settings while the modal response remains unchanged. Unsteady flow simulations and harmonic FSI simulations were used to complement the experiments and to investigate the local blade forcing distribution, which then were linked to flow effects. Experiments showed a change in resonance amplitude up to a factor of 4 due to a change in the applied working fluid. Estimation of the damping ratio with a single degree of freedom model found the exciting force to be the main contributor to the differences in resonant response. The unsteady flow simulations were able to identify the locations on the blade surface which are responsible for the change in forcing. It was found that the forcing depends on wave propagation effects in the flow channel and on how the pressure field matches the mode shape.
Prevention solution of iroet dry tea product damage at KSU XXX, Sukatani Village, Garut
Authors: Fisabilillah Al Fattaah Muhammad Syah
Published: September 2018

One of dried tea product competitiveness can be seen from the quality of the tea. Therefore, to produce good quality tea is necessary to reduce the damage to dry tea. The implementation of Good Agricultural Practices (GAP) during the process of picking fresh tea leaves and Good Manufacturing Practices (GMP) during processing to produce dry tea is a way to obtain quality tea. This study aims to analyze the causes of damage to the tea during the production process and to find a preventive solution. A case study conducted on KSU XXX, Sukatani Village, District Cilawu, Garut regency producing Iroet tea. The research method used is a case study and used qualitative design. Some of the causes of damage occurring in the Iroet tea production process are the farmers' bad habits while picking tea shoots, carelessness of factory workers when sorting, and the production process activities are undertaken by the workers are inconsistent with GAP and GMP. Based on the three causes, the main cause of damage to Iroet tea products are workers who do not apply GAP and GMP during the production process, resulting in poor quality of the resulting tea. The solution to prevent the destruction of iroet tea products is to add one to three grading workers, and pay farmers shoots in accordance with the grading results.
Push and pull factors and development strategy of tea smallholder agroindustry in case study Barokah Farmer Group Ciwidey
Authors: Tammah Siti Utami
Published: September 2018

Tea plant with the Latin name Camellia sinensis is one of the plantation commodities suitable for cultivation in Indonesia. Indonesia is the seventh country as a tea producer in 2016. The tea plantation area in Indonesia is still dominated by smallholder tea estate of 45.17%. This study aims to identify (1) pull factors and push factors of tea smallholder agro industry at Barokah Farmer Group in Lebak Muncang Village Ciwidey Subdistrict, Regency of Bandung, (2) to formulate alternative strategy and to determine strategic priority that can be applied. The technique used in this research is case study. Informants in this study were determined purposively. The result of research shows that there are pushing and pulling factors on the tea agroindustry of Tani Barokah group such as good product quality, good raw material continuity, solid worker with family sense, customer loyalty, suitable area for tea business Plantation and activities for promotion which organized by government agency of Bandung Plantation Office. Alternative strategies that can be applied based on existing internal and external factors are: Increasing the intensity of work by intensifying, selling online, preparing and setting Standard Operating Procedure (SOP), expanding marketing network by partnering with retail or distributors, cooperating with experts to assist optimize the yield of raw materials, shoots, and cooperating with tea bag industry.
Analysis and limitations of modified circuit-to-Hamiltonian constructions
Authors: Bausch Johannes , Crosson Elizabeth
Published: September 2018

Feynman's circuit-to-Hamiltonian construction connects quantum computation and ground states of many-body quantum systems. Kitaev applied this construction to demonstrate QMA-completeness of the local Hamiltonian problem, and Aharanov et al. used it to show the equivalence of adiabatic computation and the quantum circuit model. In this work, we analyze the low energy properties of a class of modified circuit Hamiltonians, which include features like complex weights and branching transitions. For history states with linear clocks and complex weights, we develop a method for modifying the circuit propagation Hamiltonian to implement any desired distribution over the time steps of the circuit in a frustration-free ground state, and show that this can be used to obtain a constant output probability for universal adiabatic computation while retaining theΩ(T−2)scaling of the spectral gap, and without any additional overhead in terms of numbers of qubits.Furthermore, we establish limits on the increase in the ground energy due to input and output penalty terms for modified tridiagonal clocks with non-uniform distributions on the time steps by proving a tightO(T−2)upper bound on the product of the spectral gap and ground state overlap with the endpoints of the computation. Using variational techniques which go beyond theΩ(T−3)scaling that follows from the usual geometrical lemma, we prove that the standard Feynman-Kitaev Hamiltonian already saturates this bound. We review the formalism of unitary labeled graphs which replace the usual linear clock by graphs that allow branching and loops, and we extend theO(T−2)bound from linear clocks to this more general setting. In order to achieve this, we apply Chebyshev polynomials to generalize an upper bound on the spectral gap in terms of the graph diameter to the context of arbitrary Hermitian matrices.
The determinants of financial, social and Sharia disclosure accountability for Islamic banks
Authors: El-Halaby Sherif , Hussainey Khaled , Mohamed Marie , Hussien Mohsen
Published: September 2018

This study seeks to examine disclosure levels in the annual report and websites related to Islamic accountability pillars which are Sharia, social and financial. The study also aims to measure the association between disclosure levels and firm-specific characteristics. The manual content analysis is employed. Our sample consists of 117 Islamic banks (IBs) based on data of 2016 across 23 countries. The authors adopted 3 indices for Corporate Social Responsibility Report (CSRR); Sharia Supervisory Board Report (SSBR) and financial statements (FS) based on holistic benchmark. Descriptive analysis shows relatively high disclosure level for financial and Sharia disclosure (62% and 52% respectively) and relatively low for social disclosure (28%). Concerned with holistic disclosure level that measuring accountability’ pillars for all sections in the annual report, disclosure levels about Sharia, social and financial are 40%; 28% and 81% respectively. The regression analysis shows partial positive significant association of disclosure levels with existing Sharia auditing department; size of bank and probability in additional to Sharia auditing department. This study is the first one that investigates a holistic framework about Islamic accountabilities for IBs around the world (117 across 23 countries). It is also the first one that measuring the accountability concept in all sections in the annual report for IBs as well as their websites.
Supercritical CO2 impregnation of Gelatin-Chitosan films with clove essential oil and characterization thereof
Authors: Radovic Marko , Adamovic Tijana , Pavlovic Jelena , Rusmirovic Jelena , Tadic Vanja , Brankovic Zorica , Ivanovic Jasna
Published: September 2018

Supercritical CO2 impregnation process was used for the first time to fabricate biodegradable gelatin-chitosan (G/Ch) films containing clove oil (CO) for potential use in active food packaging. All the impregnations were carried out at moderately low temperature (40?C). Aiming to maximize CO loading in the films with acceptable morphological, structural and thermal properties, CO2 pressure, impregnation time and G:Ch mass ratio were varied. Gelatin fraction in the films of 25-50 wt.%, scCO2 pressures of 10-20 MPa and impregnation time of 2-6 h impregnation favoured the CO loading. Processing of the film with equal gelatin to chitosan mass ratio (G/Ch50:50) at 10 MPa for 2 h yielded sufficiently high loading (56 mg CO/gfilm) without an adverse effect on morphological properties. The G/Ch50:50 film was therefore chosen for structural and thermal analyses. ATR-FTIR analysis confirmed successful CO incorporation into the G/Ch50:50 and its interaction with the film. Plasticizing effect of scCO2 and CO on the film was evidenced by DSC. Incorporation of 56 mg CO/gfilm into the G/Ch50:50 didn''t affect thermal stability of the film. Beside environmental benefits, supercritical impregnation process enables fast fabrication of G/Ch bio-composite films containing CO, thermally stable to 110?C, which is suitable for most of food packaging applications.
Constitutive modeling for FRP composite materials subject to extreme loading
Authors: Asaro Robert , Benson David
Published: September 2018

A physically based, finite deformation, rate and temperature dependent theory and model have been developed to simulate the deformation and failure of FRP composite materials and structures. Failure modes include: inter alia, fiber crushing and kinking as occurs during extreme compressive loading; fiber fracture as occurs in for example fragmentation; interlaminar shear as occurs at elevated temperatures and that leads to kinking; debonding and delamination including the coupling with laminate kinking; and debonding as occurs in cored FRP panels. The theory/model is capable of describing quasi-static (including creep) as occurs at elevated temperatures, and dynamic deformation and failure as occurs during shock, blast or impact. The model is implemented within LS DYNA and specific example simulations are described that illustrate the theory/model capabilities. In Part I, fragmentation is not covered in detail. Fiber fracture and fragmentation are to be covered to detail with specific examples in Part II.
Three-dimensional study of the upper airway in different skeletal Class II malocclusion patterns
Authors: Brito Fernando C. , Brunetto Daniel P. , Nojima Matilde C. G.
Published: September 2018

Objectives:

To characterize upper airway volume and morphology in patients with different skeletal patterns of Class II malocclusion compared to Class I.

Materials and Methods:

A total of 197 individuals who had cone-beam computed tomography were allocated into groups according to ANB, SNA, and SNB angles (Class I, Class II maxillary protrusion, Class II mandibular retrusion), each subdivided into hypodivergent, normal, and hyperdivergent. Nasopharynx (NP), oropharynx (OP), and hypopharynx (HP) were assessed with three-dimensional image reconstruction software.

Results:

Intergroup comparison did not detect significant differences in volume and morphology of NP, OP, and HP. The males displayed larger OP and HP volume than the females. Positive correlations between age and NP, OP, HP volume and between craniocervical angle and OP and HP volume were observed. Linear regression analysis detected a tendency for OP and HP volume to increase as maxillary and mandibular length increased.

Conclusions:

Upper airway volume and morphology were similar in different skeletal patterns of Class II malocclusion. Actual upper and lower jaw lengths were more closely related to upper airway volume and morphology than the angles that reflected their position relative to the cranial base.
Effect of loaded orthodontic miniscrew implant on compressive stresses in adjacent periodontal ligament
Authors: Albogha Mhd Hassan , Takahashi Ichiro
Published: September 2018

Objectives:

To describe the relationship between the proximity of miniscrew implants (MSIs) to the periodontal ligament (PDL) and stress in the PDL under different load magnitudes and different bone properties.

Materials and Methods:

Sixteen subject-specific finite element models of the region of the maxillary first molar and second premolar were developed using computed tomography images of four patients. For each patient, an MSI surface model derived from micro-computed tomography was placed at four different distances from the premolar PDL. Finite element analysis was conducted with mesial load on the MSI, increasing from 1 N to 4 N. Peak absolute compression stress (CS) was calculated at each 1 N step. Stepwise multiple regression modeling was conducted to explain compressive stress by proximity, load magnitude, and bone properties.

Results:

The multiple regression model explained 83.47% of the variation of CS and included all three factors: proximity, load magnitude, and bone properties. The model expected significant interaction between the bone properties and load magnitude, implying that strong bone properties could be associated with significant increases in CS at small increases in load.

Conclusions:

To ensure the safety of adjacent roots, MSIs should be placed at least 1 mm from the roots. Assessment of alveolar bone properties is recommended when the use of MSI is intended, as some patients may present with strong bone properties and thereby a high risk of MSI-induced root resorption.
Çiftçilerin Bilgi ve İletişim Teknolojilerini Kullanma Eğilimleri: İzmir İli Menderes İlçesi Örneği
Authors: Gülter Salih , Yıldız Özlem , Boyacı Murat
Published: September 2018

Çalışmada çiftçilerin
bilgi ve iletişim teknolojilerini kullanma eğilimleri ve bilgi teknolojileri okur-yazarlığı
incelenmektedir. Çalışmanın ana materyalini, İzmir ili Menderes İlçesindeki beş
köyde 114 çiftçi ile yapılan görüşmelerden elde edilen veriler oluşturmaktadır.
Görüşülen çiftçilerin %99.1’i cep telefonu, %77.2’si akıllı telefon, %66.9’u bilgisayar
sahibidir. İnternet bağlantısı olanların oranı %87.7’dir. Eğitim düzeyleri
yükseldikçe internet kullanımı artmaktadır. Görüşülen çiftçilerin bilgi
teknolojileri okur-yazarlık becerileri orta düzeydedir. Çiftçiler internetten
sık sık tarımsal bilgi aramalarına karşın, internetten erişilen bilgiye orta
düzeyde güvenmektedirler. Son beş yılda internetten öğrendiği bilgiyi uygulayan
çiftçilerin oranı %53.5’dir. Çiftçilerin bilgi ve iletişim teknolojilerini
kullanmaya istekli olduğu görülmektedir.
ENACTIVE THEORY OF RADIOLOGY IMAGING: IMAGES AND LANGUAGE AS DIAGNOSTIC TOOLS
Authors: BRIEDIS Mindaugas
Published: September 2018

The article is based on research conducted at Le Bonheur Children’s Hospital, Radiology Department (Memphis, Tennessee, USA). It examines embodied cognition embedded in radiological diagnostics relating image perception with normative judgment constitution. The research follows the causal thesis in that it is possible to grasp categories and causality via visual experience (causal impressions) and language (causal verbs), which in turn heavily depends on strategies of the enaction of imaging technology and intersubjective corroboration. In this way, the pre-reflective and intersubjective constitution of categorial fulfillments of diagnostic experiences is disclosed by phenomenological ethnography of radiologists’ praxis showing how professional knowledge is structurally interrelated with certain kinesthetic and kinetic experiences, multilayered image apprehension and enactive metaphors.
ARCHIBALD, Elizabeth; BROCKLISS, William; GNOZA, Jonathan (orgs.). Learning Latin and Greek From Antiquity to the Present. Cambridge, UK: Cambridge University Press, 2015.
Authors: Freitas Eduardo da Silva de
Published: September 2018

Resenha do livro Learning Latin and Greek From Antiquity to the Present, organizado por Elizabeth Archibald, William Brockliss e Jonathan Gnoza, publicado em 2015 pela Cambridge University Press, 2015.
A poiesis do caminho filosófico de Marcelo Marques
Authors: Peixoto Miriam C. D.
Published: September 2018

.
Notas al Lisis de Platón: amigos reales y amigos virtuales
Authors: Bossi Beatriz
Published: September 2018

.
Arquivo 17
Authors: Grigolin Fernanda
Published: September 2018

O presente artigo visa a apresentar a exposição Arquivo 17 como um experimento feminista dentro do que se denomina arte contemporânea. Pesquisas feministas sobre arte e visualidade, como termos concebidos por Giovana Zapperi (temporalidade feminista) e Donna Haraway (conhecimento situado), estão em diálogo com a narradora do arquivo proposto: A mulher do canto esquerdo do quadro.
PENGARUH INSTITUSI PENDIDIKAN DAN RUMAH SAKIT TERHADAP TRANSFORMASI KAWASAN PERUMAHAN MELALUI ANALISIS TIPOMORFOLOGI
Authors: Pratimi Mariska , M.Firdausah Azzahra
Published: September 2018

ABSTRAK Fenomena menjadikan rumah tinggal sebagai rumah-usaha di beberapa kawasan perumahan, ditunjukkan dengan terjadinya masuknya fungsi baru ke dalam suatu fungsi yang homogen. Adanya aktifitas komersial pada kawasan perumahan akan mengakibatkan perubahan tatanan ruang lingkup hunian secara fisik maupun non fisik. Penelitian ini dilakukan dengan dua tahap, tahap pertama mengidentifikasi metode-metode yang digunakan untuk menganalisis perubahan fungsi lahan. Tahap kedua yaitu menguji metode yang terpilih pada studi kasus pada sebuah perubahan fungsi kawasan perumahan di Kota Bandung. Hasil identifikasi metode ditemukan bahwa tipomorfologi dapat  digunakan untuk menerangkan perubah-perubahan dari suatu tipe, di mana suatu tipe memiliki ciri-ciri tertentu yang dapat membedakannya dengan tipe-tipe yang lain. Proses perubahan fungsi yang terjadi pada Koridor Hasanudin dan Prof. Eykman sangat dipengaruhi oleh adanya aktivitas rumah sakit dan universitas sehingga pola perkembangan yang terjadi adalah pola invasi linear dan pola dominasi radial. Perubahan fungsi yang terjadi pada dua koridor memberikan dampak berupa gangguan lalu lintas akibat on street parking dan perubahan sirkulasi jalan. Kata kunci: komersial, perumahan, perubahan fungsi, tipomorfologi  ABSTRACTThe phenomenon of making a home as a business house in several residential areas is indicated by the entry of a new function into a homogeneous function. The presence of commercial activities in residential areas will result in changes in the physical and non-physical occupancy scope of the occupancy. This research was conducted in two stages, the first stage identified the methods used to analyze changes in land functions. The second stage is testing the method chosen in the case study on a change in the function of the residential area in the city of Bandung. The method identification results found that typomorphology can be used to explain changes of a type, where a type has certain characteristics that can distinguish it from other types. The function change process that occurs in the Hasanudin Corridor and Prof. Eykman is strongly influenced by the activities of hospitals and universities so that the pattern of development that occurs is a linear invasion pattern and a pattern of radial dominance. Function changes that occur in the two corridors have an impact in the form of traffic disruption due to on street parking and changes in road circulation. Keywords: commercial, housing, function change, typomorphology