scholarly journals On Binocular Vision: The Geometric Horopter and Cyclopean Eye

2016 ◽  
Author(s):  
Jacek Turski
Keyword(s):  
Binocular Vision ◽  
Nodal Point ◽  
Infinite Family ◽  
Point Location ◽  
Circular Arc ◽  
Depth Discrimination ◽  
Circular Arcs ◽  
The Family ◽  
The Difference ◽  
Straight Lines

We study geometric properties of horopters defined by the criterion of equality of angle. Our primary goal is to derive the precise geometry for anatomically correct horopters. When eyes fixate on points along a curve in the horizontal visual plane for which the vergence remains constant, this curve is the larger arc of a circle connecting the eyes'rotation centers. This isovergence circle is known as the Vieth-M&uumlller circle. We show that, along the isovergence circular arc, there is an infinite family of horizontal horopters formed by circular arcs connecting the nodal points. These horopters intersect at the point of symmetric convergence. We prove that the family of 3D geometric horopters consists of two perpendicular components. The first component consists of the horizontal horopters parametrized by vergence, the point of the isovergence circle, and the choice of the nodal point location. The second component is formed by straight lines parametrized by vergence. Each of these straight lines is perpendicular to the visual plane and passes through the point of symmetric convergence. Finally, we evaluate the difference between the geometric horopter and the Vieth-M&uumlller circle for typical near fixation distances and discuss its possible significance for depth discrimination and other related functions of vision that make use of disparity processing.

Development of Knowledge Base for Designing Linkage-Type Dwell Mechanisms: Part 1—Theory

1987 ◽  
Vol 109 (3) ◽  
pp. 308-315 ◽  
Author(s):  
Sridhar Kota ◽  
Arthur G. Erdman ◽  
Donald R. Riley
Keyword(s):  
Expert System ◽  
Circular Arc ◽  
Design Charts ◽  
Circular Arcs ◽  
Straight Line ◽  
Parallel Motion ◽  
Curvature Theory ◽  
Path Curvature ◽  
Motion Characteristics ◽  
Straight Lines

Linkage-type mechanisms have certain advantages over cams for dwell applications. The design of a typical six-link dwell mechanism involves adding an output dyad to the basic four-bar mechanism that generates either a circular arc or a straight line portion of the coupler curve. The entire motion characteristics of these four-bar mechanisms should be considered in order to design a suitable dwell linkage. Part 1 of this paper is devoted to the study of four-bar linkages which generate straight line, circular arc and symmetrical curves. Part 2 discusses how the design experience gained in this study can be applied to develop an expert system for designing linkage-type dwell mechanisms. Using path curvature theory and design charts developed by Tesar, et al., hundreds of four-bar straight-line mechanisms are systematically investigated. Based on the typical shapes of coupler curves these mechanisms are then classified. A synthesis technique has been developed to design four-bar mechanisms for circular arc generation. Symmetrical coupler curves with straight-line or circular-arc segments, which are required for designing double-dwell mechanisms, are studied. This paper is part of the research that is underway to develop an “expert system” for designing mechanisms to generate straight lines, circular arcs, symmetrical curves, parallel motion and dwell.

Automatic Tread Gaging Machine

1979 ◽  
Vol 7 (1) ◽  
pp. 31-39
Author(s):  
G. S. Ludwig ◽  
F. C. Brenner
Keyword(s):  
Experimental Tests ◽  
Automatic Machine ◽  
Wear Rates ◽  
Handling Device ◽  
Straight Line ◽  
Component Systems ◽  
Before And After ◽  
Good Repeatability ◽  
The Difference ◽  
Straight Lines

Abstract An automatic tread gaging machine has been developed. It consists of three component systems: (1) a laser gaging head, (2) a tire handling device, and (3) a computer that controls the movement of the tire handling machine, processes the data, and computes the least-squares straight line from which a wear rate may be estimated. Experimental tests show that the machine has good repeatability. In comparisons with measurements obtained by a hand gage, the automatic machine gives smaller average groove depths. The difference before and after a period of wear for both methods of measurement are the same. Wear rates estimated from the slopes of straight lines fitted to both sets of data are not significantly different.

scholarly journals Validation of the German version of the Family Reported Outcome Measure (FROM-16) to assess the impact of disease on the partner or family member

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Susanne A. Elsner ◽  
Sam S. Salek ◽  
Andrew Y. Finlay ◽  
Anna Hagemeier ◽  
Catherine J. Bottomley ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Family Member ◽  
Internal Consistency ◽  
Outcome Measure ◽  
Test Validity ◽  
Family Members ◽  
German Version ◽  
The Family ◽  
The Difference ◽  
The Impact

Abstract Background The Family Reported Outcome Measure (FROM-16) assesses the impact of a patient’s chronic illness on the quality of life (QoL) of the patient’s partner or family members. The aim of the study was to translate, explore the structure of and validate the FROM-16. Methods The questionnaire was translated from English into German (forward, backward, four independent translators). Six interviews with family members were conducted to confirm the questionnaire for linguistic, conceptual, semantic and experiential equivalence and its practicability. The final German translation was tested for internal consistency, reproducibility and test validity. Criterion validity was tested by correlating the scores of the FROM-16 and the Global Health Scale (GHS). Principal component analysis, factor analysis, and confirmatory factor analysis was used to assess the questionnaire’s structure and its domains. Reliability and reproducibility were tested computing the intraclass correlation coefficient (ICC) using one sample t-test for testing the hypothesis that the difference between the scores was not different from zero. Results Overall, 83 family members (61% female, median age: 61 years) completed the questionnaire at two different times (mean interval: 22 days). Internal consistency was good for the FROM-16 scores (Cronbach’s α for total score = 0.86). In those with stable GHS, the ICC for the total score was 0.87 and the difference was not different from zero (p = 0.262) indicating reproducible results. A bi-factor model with a general factor including all items, and two sub-factors comprising the items from the original 2-factor construct had the best fit. Conclusions The German FROM-16 has good reliability, test validity and practicability. It can be considered as an appropriate and generic tool to measure QoL of a patient’s partner or family member. Due to the presence of several cross-loadings we do not recommend the reporting of the scores of the two domains proposed for the original version of FROM-16 when using the German version. Thus, in reporting the results emphasis should be put on the total score. Trial registration: Retrospectively registered: DRKS00021070.

scholarly journals How to talk with the family of a dying patient: anger to understanding, rage to compassion, loss to acceptance

2021 ◽  
pp. bmjspcare-2021-002971
Author(s):  
Moshe Y Flugelman
Keyword(s):  
Goal Setting ◽  
Stressful Situation ◽  
Family Needs ◽  
The Third ◽  
Single Entity ◽  
The Family ◽  
Patient Families ◽  
The Difference ◽  
Dying Patient

Informing families about the impending or actual death of their relatives is one of the most challenging and complex tasks a physician may face. The following article describes goal setting and provides five roles/recommendations for conducting the encounter with patient families regarding the imminent or actual death of their relatives. Importantly, the encounter should be family-centred, and the physician should be highly attentive to family needs. The following roles should be applied based on family needs and should not be sequential as numbered. The first and basic role is to inform the family at the earliest possible time and as often as possible. The second goal of the physician is to convey to the family that their relative received the needed therapy during his hospitalisation or in the community. The third goal of the physician is to help the family reach acceptance of the death of their relative and leave the hospital having moved beyond anger and bargaining. The fourth goal of the physician during the encounters is to reduce or alleviate guilt by stating that nothing could have changed the course of the disease and that all efforts were made to save the patient. The fifth role of the physician is to try and help the family as a single entity and maintain their unity during this stressful situation. Following these roles/methods will help families in the stressful situation and will create the difference between anger and understanding, rage and compassion, and loss and acceptance.

scholarly journals An Improved Path-Generating Regulator for Two-Wheeled Robots to Track the Circle/Arc Passage

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Jun Dai ◽  
Naohiko Hanajima ◽  
Toshiharu Kazama ◽  
Akihiko Takashima
Keyword(s):  
Control Method ◽  
Convergence Property ◽  
Tangential Direction ◽  
Navigation Problem ◽  
Wheeled Robots ◽  
Robot Trajectory ◽  
Look Ahead ◽  
Straight Line ◽  
The Family ◽  
Straight Lines

The improved path-generating regulator (PGR) is proposed to path track the circle/arc passage for two-wheeled robots. The PGR, which is a control method for robots so as to orient its heading toward the tangential direction of one of the curves belonging to the family of path functions, is applied to navigation problem originally. Driving environments for robots are usually roads, streets, paths, passages, and ridges. These tracks can be seen as they consist of straight lines and arcs. In the case of small interval, arc can be regarded as straight line approximately; therefore we extended the PGR to drive the robot move along circle/arc passage based on the theory that PGR to track the straight passage. In addition, the adjustable look-ahead method is proposed to improve the robot trajectory convergence property to the target circle/arc. The effectiveness is proved through MATLAB simulations on both the comparisons with the PGR and the improved PGR with adjustable look-ahead method. The results of numerical simulations show that the adjustable look-ahead method has better convergence property and stronger capacity of resisting disturbance.

scholarly journals Małe dzieci w chrześcijańskiej epigrafice miasta Rzymu i w nauczaniu Jana Chryzostoma

Vox Patrum ◽  
2009 ◽  
Vol 53 ◽  
pp. 233-243
Author(s):  
Bożena Stawoska-Jundziłł
Keyword(s):  
The Other ◽  
High Status ◽  
Small Children ◽  
Person Following ◽  
John Chrysostom ◽  
The Family ◽  
The Difference ◽  
Christian Families ◽  
The City ◽  
Full Maturity

The paper presents the results of studies of epitaphs for children up to almost eight years of age from the city of Rome (3rd-4th c. – B. Stawoska-Jundziłł, Vixit cum parentibus. Children aged under seven in Christian families from Rome of 3rd-4th c., Bydgoszcz 2008) in comparison with the views of John Chrysostom on the upbringing of small children. The content of over 2000 children from Rome demonstrates a high status of even the youngest offspring in the Christian families from this city. The founders cared for their religious „endowment”, bestowed their love on them and tried to remember them as members of the family even if they had died after a few days or months. It was unquestionably believed that small children are immediately saved, go to God and commune with the saints. Thanks to this the family could hope for their support and prayers. Whereas, John Chrysostom only casually mentions small children and, what is more, ambivalently: on one hand presenting them on the basis of thorough observations of their behavior and looking after them and on the other hand as mindless creatures, a harbinger of va­luable person following the Stoics e.g. Seneca. As far as the most important for me question of the death of small children is concerned he takes a stand similar to that of the Romans. The children are really without sins (they did not commit them consciously) so God shall accept them only through the hardships of illness and death. Now they are asleep (unlike in the studied epitaphs) but they will rise from the dead and join their parents. Thus, the despair after their death is pointless; God decided the best for them. The difference lies in the fact that the founders of epitaphs more decidedly see the perfection of posthumous existence of even the smallest children who there reach their full maturity whereas John does not seem to be interested in this issue since he directs his teaching mostly to maturing and mature Christians in the earthly life and not in the beyond.

scholarly journals Socio-Cultural Differences Between Generations in Elbasan

2021 ◽  
Vol 11 (1) ◽  
pp. 35-57
Author(s):  
Nuredin Çeçi ◽  
Marjeta Çeçi
Keyword(s):  
Twentieth Century ◽  
Cultural Differences ◽  
Social Life ◽  
Cultural Factors ◽  
Social Constraints ◽  
Cultural Changes ◽  
Cultural Elements ◽  
The Family ◽  
The Difference ◽  
Social And Cultural Factors

Social life carries various social and cultural phenomena which significantly interact with our lives, creating the difference in-depth reports and the newly formed relationship between generations in the family and society. Changes in thought, behavior, or actions strands understand if inequality and differences emerge and develop from social constraints. In today's society that mostly resembles a space without borders, it is possible to absorb new ways and ideas regarding lifestyle, thinking, and conduct. Many sociological and psychological studies argued that, especially in the early 60-s of the twentieth century, adolescents are more likely to be directed towards the ideas, practices, and characterized as countercultural movements. The study "Socio-cultural differences between generations in Elbasan" was conducted to identify social and cultural factors that affect the growth of differences between generations in the family and society. Identification of socializing factors such as media, schools, technology, and impacts arising from other cultures through immigration. Underlining the importance and analysis of social and cultural elements in change as essential factors in the differences between generations gives meaning to this study. This study's results have been highlighted by analyzing relations between ages and social and cultural changes in Elbasan in recent years.

scholarly journals DEVELOPMENT AND CAREER MANAGEMENT

2019 ◽  
Vol 31 (5) ◽  
pp. 1339-1344
Author(s):  
Baki Koleci
Keyword(s):  
Career Development ◽  
Social Relationships ◽  
Career Management ◽  
Personal Goals ◽  
Expert Opinions ◽  
The Family ◽  
The Subject ◽  
The Difference ◽  
The Individual

We, as individuals, continually through our lives, learn and acquire the knowledge, skill, and skill we expect to help us employ or apply appropriately in order to gain a living and secure our survival. Everyone wants to build a successful career with which he can be proud of his life. However, this is not always so easy and simple, it requires a lot of sacrifices, concessions, compromises with our partners, the family, close social relationships, and finally with ourselves. In this paper, the subject of the research is the determination of career development, career stages, career factors, then expert opinions, the difference between traditional and modern career views, goals pursued by individuals in the career, and so on, Career development can be seen as an experience of individuals (an internal career) and this is not related to an organization. Although the responsibility for career management is in the hands of individuals, individuals, however, organizations can play a key role in shaping and developing careers by providing help and providing support. Career development can not be pursued individually or separately from the personality as a whole, meaning it reflects on the context of life and the development of the person as a whole, not just personality as work. The main goal in career development is to realize the current and future needs and goals of the organization and individuals, which has to do more with developing employment opportunities and improving the skills needed for employment. Career success is reflected in the eyes of the individual and can be defined as a career pleasure through achieving personal goals related to the work, while at the same time enhancing the success and efficiency of the organization.

scholarly journals KARAKTERISTIK RUANG PADA RUMAH TRADISIONAL TANEAN LANJHANG DI DESA BANDANG LAOK KECAMATAN KOKOP, KABUPATEN BANGKALAN MADURA

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Widya Aprilia Kurnia ◽  
Agung Murti Nugroho
Keyword(s):  
New Family ◽  
The Family ◽  
Residential House ◽  
The Difference ◽  
The Village ◽  
Different Levels ◽  
Main House ◽  
Descriptive Qualitative

Tanean Lanjhang merupakan bentuk rumah tradisional Madura yang memiliki komponen-komponen yang di antaranya adalah Langghar (Musholla), rumah utama yang diikuti rumah-rumah lainnya yang pada umumnya berderet dari Barat ke Timur, sesuai dengan urutan dalam keluarga, dapur, kandang, dan Tanean (pekarangan). Pada penelitian ini dibahas tentang karakteristik ruang pada rumah tradisional Tanean Lanjhang di Desa Bandang Laok, Kecamatan Kokop, Kabupaten Bangkalan, Madura yang terfokus pada beberapa kelompok Tanean Lanjhang di Dusun Baktalbak. Metode yang digunakan dalam penelitian ini adalah deskriptif kualitatif dengan menganalisis hasil identifikasi karakteristik ruang pada masing-masing kelompok Tanean. Hasil penelitian menunjukkan bahwa pola Tanean Lanjhang yang hanya terdapat 1 rumah utama saja disebabkan oleh keterbatasan lahan untuk mendirikan rumah hunian baru, sehingga keluarga baru/muda harus membuat rumah hunian lain dengan pola Tanean Lanjhang juga. Selain itu terdapat persamaan bentuk ruang dengan ukuran ruang yang bervariasi, sesuai dengan fungsi dan kegunaan. Sementara itu, perbedaan pembatas ruang dan komponen ruang menunjukkan tingkat perekonomian yang berbeda Tanean Lanjhang is a form of  Madurese  traditional house  which have components  of Langghar (mosque), the main house followed by other homes that are generally rows from West to East, according to the order in the family, kitchen, stables, and Tanean (yard). This study discussed about the characteristics of space in a traditional house Tanean Lanjhang in the village of Bandang Laok, Kokop District, Bangkalan Regency, Madura, which focused on several groups of Tanean Lanjhang in Baktalbak village. The method used in this research is descriptive qualitative by analyzing space characteristics on each Tanean group. The results showed that the pattern  of Tanean Lanjhang with one main house was caused by the limitation of land to build a new residential house, so the new family must build another residential house with Lanjhang Tanean pattern also. In addition, there is a similarity of form of space with room sizes in vary according to the functionality and usability. While the difference  of  space  barrier  and  space  components  showed  the  different  levels of  the economy.

Optimal Design of Computerized Flat Knitting Machine Cam Curves Based on UG and ANSYS/LS-DYNA

2014 ◽  
Vol 529 ◽  
pp. 410-414
Author(s):  
Cang Zhao ◽  
Guang Li Song ◽  
Lei Xu
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Dynamic Analysis ◽  
Maximum Stress ◽  
Analysis Software ◽  
Forming Process ◽  
Polynomial Curve ◽  
Circular Arcs ◽  
Design Software ◽  
Straight Lines

By combining the industrial design software UG and finite element dynamic analysis software ANSYS/LS-DYNA, the paper respectively designs the non-linear knitting cams with polynomial curves, and simulates the loop-forming process in the interaction between the cams and needles. Based on comparative analyses, it’s thereby concluded that the polynomial curve has the best performance and is significantly superior to the cam curve composed of straight-lines and circular-arcs; the elements with higher stresses are located above the butt of needle jack and the joint of the jack and latch needle; and the polynomial curve is effective in lowering the maximum stress of the needle.

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