Coupled-channels Faddeev AGS calculation of K−ppnK^{-}ppn and K−pppK^{-}ppp quasi-bound states

Using separable $\bar{K}N-\pi\Sigma$ potentials in the Faddeev equations, we calculated the binding energies and widths of the $K^{-}pp$, $K^{-}ppn$ and $K^{-}ppp$ quasi-bound states on the basis of three- and four-body Alt-Grassberger-Sandhas equations in the momentum representation. One- and two-pole version of $\bar{K}N-\pi\Sigma$ interaction are considered and the dependence of the resulting few-body energy on the two-body $\bar{K}N-\pi\Sigma$ potential was investigated. The $s$-wave [3+1] and [2+2] sub-amplitudes are obtained by using the Hilbert-Schmidt expansion procedure for the integral kernels. As a result, we found a four-body resonance of the $K^{-}ppn$ and $K^{-}ppp$ quasi-bound states with a binding energy in the range $B_{K^{-}ppn}\sim{55-70}$ and $B_{K^{-}ppp}\sim{90-100}$ MeV, respectively. The calculations yielded full width of $\Gamma_{K^{-}ppn}\sim{16-20}$ and $\Gamma_{K^{-}ppp}\sim{7-20}$ MeV.Comment: 16 pages, 4 figure

Educational Ethics in Academic Environment: Medical Students' Perspectives

Background and Objective: Educational ethics imply values such as honesty, reliance on one's own personal effort, not to abuse the efforts of others, and respect the dignity and respect for others. Students are faced with different situations in which they show various moral and immoral behaviors. This study aimed to explore medical students' viewpoints and experiences at Golestan University of Medical Sciences about ethics in academic environment in 2013. Materials and Methods: In this qualitative study a purposive sampling was used with maximum variation and 12 medical students participated in the research. Data was gathered using semi-structured interviews. At least an open question "When I say ethics in education or educational environment, what comes to your mind" was repeated in all the interviews. The interviews recorded and transcribed line by line and then analyzed according to "conventional content analysis" method. Results: "Respecting teacher dignity", "preserving dignity of classroom", "respecting and maintaining dignity for classmates", "seeking for knowledge and sciences” emerged as the main themes of the current study. Conclusion: University students considered learning environment as a sacred place; conforming its expected rules and ethics would be mandatory. Abnormal behavior causes not only loss of students dignity but also could be harmful to the calmness of educational atmosphere and may evoke different unpleasant pessimistic ideas about such academic environment

Peanut hull flour as dietary fiber in whole wheat bread

Peanut hull flour (PHF) was substituted for 0, 4, and 8% of the wheat flour in a formulation for whole wheat bread. Carboxymethyl cellulose and wheat gluten were added to all treatments to produce loaves with volume comparable to that of bread made with white wheat flour. The bread was produced, baked, and tested to determine the effect of PHF on some of its chemical components, physical characteristics, and organoleptic attributes. Bread with 8% PHF had a higher and bread with 4% had a lower Hardness value than bread with 0% PHF. As the length of storage time was increased, hardness of the bread increased. Addition of PHF affected cohesiveness but not elasticity of the bread. However, both properties of the bread decreased as the period of storage was extended to 6 days. The presence of PHF caused a darkening of the outer crust and the crumb of the bread. Bread with 8% PHF was darker than bread with 4% PHF. The crumb was lighter than the crust of bread containing a given percentage of PHF. Bread with 4% PHF had a higher loaf volume than bread with 0% PHF, while bread with 8% PHF had a lower loaf volume. As the level of PHF was increased, the amount of moisture, ash, crude fiber, and neutral detergent fiber was increased. On the other hand, the amount of crude protein, ether extract, and carbohydrate was decreased as the percentages of PHF was increased. Aflatoxins were not detected in the PHF. The sensory panel indicated that the presence of PHF affected some of the quality attributes of the bread. When the panel compared samples of bread with the three levels of PHF content to an imaginary loaf of ideal whole grain bread, the following general findings were apparent. In relation to the ideal bread, PHF at one or more levels caused the bread to possess a less smooth surface, have decreased moistness and graininess, exhibit a softer crumb, and be less preferred. Likewise, PHF at one or more levels caused the bread to be more gritty and sticky and have a harder crust than the ideal loaf. PHF does seem to have potential as a source of dietary fiber when added to whole wheat bread. A 4% level of PHF should yield bread with more acceptable physical attributes than an 8% level of PHF. However, the panel indicated samples of bread with 4 and 8% PHF level were not different from each other when compared with an ideal loaf of whole grain bread

GASA-JOSH: a Hybrid Evolutionary-Annealing Approach for Job-Shop Scheduling Problem

The job-shop scheduling problem is well known for its complexity as an NP-hard problem. We have considered JSSPs with an objective of minimizing makespan. In this paper, we develope a hybrid approach for solving JSSPs called GASA-JOSH. In GASA-JOSH, the population is divided in non-cooperative groups. Each group must refer to a method pool and choose genetic algorithm or simulated annealing to solve the problem. The best result of each group is maintained in a solution set, and then the best solution to the whole population is chosen among the elements of the solution set and reported as outcome. The proposed approach have been compared with other algorithms for job-shop scheduling and evaluated with satisfactory results on a large set of JSSPs derived from classical job-shop scheduling benchmarks. We have solved 23 benchmark problems and compared results obtained with a number of algorithms established in the literature

رفتارهای نامحترمانه در محیط کار پرستاران: یک مطالعه کیفی Uncivil Behaviors in Nursing Workplace: A Qualitative Study

مقدمه: رفتارهای نامحترمانه در محیط‌های بالینی تهدید آمیز می‌باشند و منجر به خطر انداختن سلامت پرستاران و بیماران در محیط‌های بالینی و درمانی می‌گردد. نتایج نامطلوب آن با عدم رضایت شغلی و ترک محل کار همراه است. این مطالعه با هدف تبیین رفتارهای نامحترمانه در محیط کار پرستاران انجام شده است روش کار: در این مطالعه کیفی پنجاه نفر از پرستاران شاغل در مرکز آموزشی درمانی تحت پوشش دانشگاه علوم پزشکی گلستان با روش نمونه گیری مبتنی بر هدف و با حداکثر تنوع مورد بررسی قرار گرفتند. داده‌ها از طریق مصاحبه‌های نیمه ساختار تا رسیدن به اشباع داده‌ها جمع آوری و با رویکرد تحلیل محتوای کیفی مرسوم تحلیل شدند یافته‌ها: 80 درصد مشارکت کنندگان زن، با سابقه کار 3 تا 20 سال بوده‌اند. رفتار نامحترمانه با مفاهیم "حقارت"، "پرخاشگری کلامی- غیر کلامی"، "تهدید"، "سرزنش شدن"، "نادیده گرفتن توانمندی‌ها"، "مشارکت داده نشدن"، در تعامل با همکاران، مافوق، پزشک، بیماران، همراهان، کادر خدماتی همراه بوده است. مشارکت کنندگان رفتار نامحترمانه از همراهان را در طیفی از خفیف تا شدید تجربه کردند و آن را بسیار تنش زا می‌دانستند در حالی که توهین از جانب بیمار را کمتر شخصی می‌پندارند و به دلیل وضعیت سلامتی و استرس بیمار آن را بهتر تحمل می‌کنند. مشارکت کنندگان همواره بهترین راه مقابله برای پاسخ به رفتار نامحترمانه را نمی‌دانستند، با مسبب رفتار توهین آمیز مقابله‌ای نمی‌کردند یا آن رفتار را گزارش نمی‌کردند نتیجه گیری: یافته‌ها نشان داد رفتارهای نامحترمانه به درجات و در ابعاد مختلف در محیط کاری پرستاران رخ می‌دهد و تداوم چنین رفتارها و احساس عدم وجود منابع حمایتی می‌تواند سبب سبب یاس از حرفه کاری و استرس گرد

Designing for oral storytelling practices at home: A parental perspective

Storytelling at home is typically an oral practice that supports parents and children to make sense of their family identity. Parents play a key role in crafting the story plot and facilitating the child’s participation in the storytelling process. Yet in the context of digital technology, interaction design researchers have tended to focus on children and how digital storytelling tools can support them in their learning. Adopting a “family lens” the aim of this research is to understand the character of oral storytelling practice and identify opportunities for digital storytelling design. The findings outline a co-design workshop that involved a team of designers and parents, who regularly engaged in oral storytelling. Grounded in a systematic video analysis of the workshop alongside a reflection of the design decisions that unfolded, we contribute four new design opportunities centring on the themes of flexibility, shared experience, minimalism, and autobiographical memories. These opportunities can guide interaction design researchers interested in designing new digital oral storytelling tools for families

Influence of tillage depth, penetration angle and forward speed on the soil/thin-blade interaction force

In this study, an experimental investigation regarding the influence of three independent variables including tillage depth (10, 15, 20 cm), angle of attack (60, 75, 90 degrees) and forward speed (0.5, 1, 1.35, 1.7 m/s) on draft force of a thin blade is presented.  Chisel plow in this research was constructed in two furrows with a blade width of 3 cm and a maximum depth of 25 cm (the distance between two blades was 1 m).  Some changes were made in the chassis of the chisel plow in order to obtain different attack angle of the blade.  The experimental work was then complemented with a new theoretical model for predicting the blade force using dimensional analysis method.  The final expression for estimating the pull resistance is as a function of several soil engineering properties (soil bulk density, soil adhesion and cohesion coefficients), blade parameters (blade width and blade rake angle) and operational conditions (tillage depth and forward speed).  Finally constants of the model were computed based on obtained experimental data.  The proposed model properly estimated the draft force of a thin blade.  Results obtained in this study indicate the stronger influence of tillage depth on the pulling force of a thin soil-working blade compared to the penetration angle and forward velocity.  The average error for the vertical blade with depth of 20, 15 and 10 cm were obtained equal to 4.5%, 4% and 1.5%, respectively.   Keywords: tillage, thin blade, chisel plow, interaction force, dimensional analysi