bluuebunny/crossref_metadata_2025 huggingface dataset:
أثر السيولة على القيمة السوقية للشركات السعودية المساهمة خلال 2011-2020
Authors: الزهراني علي خلف إبراهيم
Published: June 2022

هدفت الدراسة إلى التعرف على أثر السيولة على القيمة السوقية للشركات السعودية المساهمة في المملكة العربية السعودية واستخدمت الدراسة المنهج الوصفي التحليلي، وتكون مجتمع البحث من كافة قطاعات السوق السعودي، وتم اختيار عينة قصدية للشركات الصناعية التابعة قطاعي السلع الرأسمالية وقطاع السلع طويلة الأجل والبالغ عدد شركاتهما (18) شركة. وتوصلت الدراسة إلى أنه يوجد أثر سلبي ذو دلالة إحصائية لنسبة التداول على القيمة السوقية للشركة وذلك نظراً لمقدار الأصول وقدرتها على تغطية الخصوم، كما تبين أنه يوجد أثر إيجابي ذو دلالة إحصائية لنسبة السيولة السريعة على القيمة السوقية حيث كلما زادت نسبة السيولة السريعة زادت القيمة السوقية للشركة. وأوصت الدراسة بأنه يتوجب على شركات قطاع السلع الرأسمالية وقطاع السلع طويلة الأجل السعودية المدرجة في سوق المال السعودي اتباع سياسات مناسبة لإدارة السيولة بالطريقة المثلى وذلك لما تشكله السيولة من أهمية في تحقيق هدف الشركة وتعظيم أرباحها، وضرورة اهتمام شركات قطاع السلع الرأسمالية وقطاع السلع طويلة الأجل السعودية المدرجة في سوق المال السعودي بقائمة التدفقات النقدية والاعتماد على البيانات الواردة بها عند اتخاذ القرارات الاستثمارية والتمويلية وذلك من خلال رفع الكفاءة في إدارة السيولة القدية، حيث إن قائمة التدفق النقدي يتم إعدادها على الأساس النقدي، وضرورة أن تقوم شركات قطاع السلع الرأسمالية وقطاع السلع طويلة الأجل السعودية المدرجة في سوق المال بالاهتمام بالقيمة السوقية والعوامل المؤثرة عليها بالإيجاب، ودراسة المؤثرات السلبية ومعالجتها.
أثر الخدمات المصرفية في تحقيق الميزة التنافسية – دراسة حالة: بنك أم درمان الوطني في الفترة من 2017م - 2021م –
Authors: مرسال منى النيل مصطفى , محمد حنان عثمان عمسيب
Published: June 2022

هدف البحث إلى التعرف على مفهوم الخدمات المصرفية وأبعادها المختلفة، والتعرف على مفهوم الميزة التنافسية وطرق تحقيقها، ودراسة أثر الخدمات المصرفية في تحقيق الميزة التنافسية في المصارف السودانية، وذلك من خلال اختبار الفرض الرئيس: توجد علاقة ذات دلالة إحصائية بين الخدمات المصرفية (بأبعادها الثلاثة) والميزة التنافسية في بنك أمدرمان الوطني، وقد تم استخدام الاستبيان لجمع البيانات من مجتمع الدراسة عن طريق عينة عشوائية بسيطة من العاملين في بنك أم درمان الوطني بعدد (36)، وكانت الاستبانات الصالحة للتحليل بعدد (34). وتوصلت الدراسة لعدد من النتائج أهمها وجود علاقة ارتباط بين الخدمات المصرفية بعناصرها الثلاثة (الخدمات المصرفية المحلية، الخدمات المصرفية الإلكترونية، الخدمات المصرفية الخارجية) والميزة التنافسية، حيث بلغ معامل الارتباط بين أنواع الخدمات المصرفية الثلاث على التوالي مع الميزة التنافسية ما قيمته (0.626، 0.540، 0.682) مما يدل على وجود علاق ارتباط إيجابية قوية. كما خرج البحث بعدد من التوصيات من أهمها مراعاة تطوير الخدمات المصرفية لمواكبة المستجدات في السوق المصرفي العالمي.
مشكلات الأيتام مجهولي النسب واحتياجاتهم في ضوء نموذج الحياة
Authors: الحارثي بيان عبد الله , الزهراني أسماء علي
Published: June 2022

هدفت هذه المقالة النظرية إلى تسليط الضوء حول رعاية الأيتام مجهولي النسب من خلال رعايتهم في الإسلام، وفي المملكة العربية السعودية، وفي القانون الدولي، والجدير بالذكر أن هذه الفئة هم الأكثر احتياجاً والأكثر عرضة للمشكلات وبالتالي يستدعي ذلك ضرورة التدخل والتصدي لهذه المشكلات للحد من ظهورها، فالخدمة الاجتماعية كمهنة إنسانية تساهم في التصدي للمشكلات بأساليبها المختلفة ومداخلها العلاجية للتعامل معها، فمن خلال هذا المقال سنعرض التدخل المهني مع الأيتام مجهولي النسب في ضوء نموذج الحياة من خلال التركيز على عده محاور أساسية وهي: - أهداف نموذج الحياة مع الأيتام مجهولي النسب. - افتراضات نموذج الحياة. - مراحل التدخل المهني في نموذج الحياة مع الأيتام مجهولي النسب. - أدوار الأخصائي الاجتماعي مع الأيتام مجهولي النسب.
الطعن بالاستئناف في قانون أصول المحاكمات الشرعي - دراسة مقارنة بين التشريع الأردني والداخل الفلسطيني وقانون شؤون العائلة-
Authors: أبو راس بيان كمال , غيظان يوسف علي
Published: June 2022

هدفت هذه الدراسة للتعرف على الطعن بالاستئناف في قانون أصول المحاكمات الشرعي الأردني وقانون أصول محاكمات الشرعي في الداخل الفلسطيني وقانون شؤون العائلة، وبيان أبرز نقاط الالتقاء والافتراق بين القوانين الثلاث، والوقوف على الإجراءات والشروط في كل من القوانين الأردنية والداخل الفلسطيني؛ واستخدم الباحثان المنهج الوصفي التحليلي والمنهج المقارن حيث تم تقسيم الدراسة إلى مبحثين؛ تناول الأول: مفهوم الطعن بالاستئناف في الفقه والقانون ومشروعيته ، اما الثاني: الطعن بالاستئناف في المحاكم الشرعية الأردنية ومحاكم شؤون العائلة المدنية والشرعية داخل الخط الأخضر. وقد أظهرت النتائج أن قانون أصول المحاكمات الشرعي الأردني وقانون أصول المحاكمات الشرعي في الداخل الفلسطيني يتفقان على نوعي الاستئناف الوجوبي والجوازي، أما في قانون شؤون العائلة والقانون المدني فلم يتضمنا مثل هذه الأنواع من الاستئناف، كما أظهرت النتائج أن قانون أصول المحاكمات الشرعي الأردني وقانون أصول محاكمات الشرعية في الداخل الفلسطيني يتفقان على أن الأحكام التي تتعلق بحق الله عز وجل يكون الاستئناف فيها على الوجوب، والسبب هو عدم جواز التنازل عن حق الله تعالى من أي طرف؛ أما ما يتعلق بشؤون العائلة فلم يتناول مثل هذه الأحكام. وفي المقابل اختلفت القوانين الثلاثة في المدد الزمنية المقررة للاستئناف؛ فقد حددها قانون أصول المحاكمات الشرعي الأردني ب (30) يوما، وفي المقابل حدد قانون أصول المحاكمات الشرعية في الداخل الفلسطيني (20) يوما للاستئناف، و (60) يوما في قانون شؤون العائلة. وفي ضوء تلك النتائج أوصى الباحثان بأن تبادر المحاكم الشرعية في الداخل الفلسطيني إلى إصدار قانون أصول محاكمات شرعية موحّد، لأن الداخل الفلسطيني يشهد مزيجا من قوانين تشريع فلسطين 1918-1925 وأصول المحاكمات الحقوقية العثماني، وبالتالي فإن الأمر يتطلب إعداد قانون واضح وموحد يضبط عمل المحاكم الشرعية، وإعادة تنظيم العلاقة بين المحاكم الشرعية ومحكمة شؤون العائلة بحيث يتم تحديد صلاحيات كل محكمة على حدة لمعالجة مسألة الأسبقية في تقديم الطلبات.
الفروق اللغوية وأثرها في تفسير مشكل الحديث من خلال قوله- ﷺ-: "إنّ الميّت ليعذّب ببكاء أهله عليه": دراسة تطبيقيّة
Authors: درامي زكرياء ممد
Published: June 2022

عُنِي هذا البحث بالجواب عن الإشكال المتوهّم من حديث (إنّ الميّت ليعذب ببكاء أهله عليه)، من خلال ظاهرة الفروق اللغويّة، حيث توصّل إليه بالتفريق بين لفظ (العذاب) الوارد في الحديث، ولفظ (العقاب) المتبادَر معناه عند بعض من يستشكل الحديث؛ في محاولة لإرساء الفروق اللغويّة مسلكا من مسالك التفسير والتوفيق بين أحاديث يُتوهم من ظاهرها التعارض، مع بيان طرق الكشف عن هذه الفروق، وأنواع العلاقات بين الألفاظ. وقد توصّل البحث إلى نتائج أهمّها: أولا: هناك فرق بين كلمة (العذاب) الوارد في حديث "إنّ الميت ليعذب ببكاء أهله عليه" وبين (العقاب) المتبادَر معناه عند بعض من يستشكل الحديث. ثانيا: العلاقة بين (العذاب والعقاب): علاقةُ عموم وخصوص، فكلّ عقاب عذاب، وليس كل عذاب عقابا. ثالثا: تمّ التوصّل إلى الفرق بين اللفظين بطرق من أهمّها: العقل والنقل والاشتقاق واعتبار الصيغ الصرفية للفظين. رابعا: اعتبار الفروق اللغوية مسلكا من مسالك التفسير والتوفيق بين نصوص ظاهرها التعارض. خامساً: أنّ من أسباب استشكال الحديث: الضعف اللغوي، والقصور في معرفة الفروق الدقيقة بين الألفاظ.
الآثار الاجتماعية والنفسية للمصابين بجائحة كورونا ودور الخدمة الاجتماعية الإكلينيكية في مواجهتها في مستشفيات مدينة مكة المكرمة لعام 1443
Authors: العتيبي نهار علي
Published: June 2022

هدفت الدراسة إلى معرفة الآثار الاجتماعية والنفسية للمصابين بجائحة كورونا ودور الخدمة الاجتماعية الإكلينيكية في مواجهتها في مستشفيات مدينة مكة لعام 1443، واستخدم الباحث المنهج الوصفي المسح الاجتماعي، وتمثلت الأداة في استبانتين، تم توزيعهما على عينة من فئتين؛ عينة من المصابين بجائحة كورونا بمستشفيات مدينة مكة المكرمة وعددهم (150) وفقاً لمتغيرات الجنس والعمر والسكن والحالة الاجتماعية والمؤهل العلمي وعدد أفراد الأسرة ومستوى دخل الأسرة، وإجراء مسح شامل لعينة من الأخصائيين الاجتماعيين العاملين بمستشفيات مدينة مكة المكرمة وعددهم (25) وفقاً لمتغير الجنس والمؤهل العلمي والحالة الاجتماعية والدخل الشهري وقد توصلت الدراسة إلى مجموعة من النتائج أبرزها: أن من أهم التأثيرات الاجتماعية على المصابين هي (التباعد الجسدي الذي فرضته التدابير الاحترازية، منع الزيارات العائلية نتيجة الاصابة، الحد من تفاعل أفراد الأسرة مع المريض)، كما بينت النتائج أيضاً أن من أهم الآثار النفسية للمصابين هي (الخوف من فقدان أقاربي نتيجة إصابتي بفيروس كورونا، الشعور بالقلق المستمر بسبب سيطرة أفكار الإصابة بكورونا، وحدوث وسوسة في النظافة الشخصية)، كما بينت النتائج أن أهم أدوار الأخصائي الاجتماعي الإكلينيكي بمستشفيات مدينة مكة المكرمة في التعامل مع الآثار الاجتماعية والنفسية لجائحة كورونا هي (تشجيع المبادرات الاجتماعية الداعمة للمؤسسات الطبية، والتخفيف من آثار التباعد الاجتماعي، رفع الروح المعنوية لديهم، وتقديم النصح لتخفيف حدة القلق لديه). وقد أوصى الباحث بضرورة عقد المزيد من حملات التوعية والاتصال والزيارة لأسر المرضى لتوعيتهم بحالة المريض النفسية بعد تعافيه، وكيفية التعامل معه حتى ينخرط في الحياة الطبيعية مرة أخرى، والعمل على توفير الدعم المادي للأسر منخفضي ومنعدمي الدخل؛ وتشجيع أفراد المجتمع على المشاركة في برامج التنمية المجتمعية لمواجهة تلك الجائحة.
تدخل الدولة لدعم الاستقرار المالي: تجربة دولة الكويت في الفترة من 1982 – 2021
Authors: الطامي سعود ناصر فلاح
Published: June 2022

أظهرت الأزمات المالية والاقتصادية التي مرت على دولة الكويت في الفترة من عام 1982 وحتى عام 2021 تباين دور الدولة ومسئولياتها نحو مواجهة التحديات الاقتصادية مما يضفي على الموضوع أهميته في ضوء واقع ملموس خلال نطاق زمني كان له تأثير مباشر على زيادة الإنفاق ومن خلال الاعتماد على مناهج البحث الوصفي. خلصت الدراسة إلى اعتماد دولة الكويت في مواجهة التحديات الاقتصادية على الإيرادات العامة النفطية التي تمثل نسبة تقارب 90% من إجمالي الإيرادات العامة. إضافة إلى بعض الأدوات التشريعية والقانونية وأدوات السياسة النقدية والمالية من خلال بنك الكويت المركزي. وأوصت الدراسة باستحداث وسائل لمواجهة التحديات الاقتصادية دون الاعتماد على الإنفاق العام واستحداث لجنة برلمانية من اللجان المؤقتة في مجلس الامة عقب كل أزمة للتعاون مع الحكومة في إيجاد وسائل للحد من التداعيات السلبية للازمة.
Phyto Antitussive Medicines Affect the Cough Treatment for Covid-19’s Children’s Patients
Authors: Shpati Kleva
Published: June 2022

Introductions: Cough was one of the most troubling symptoms for Covid-19 s patients treated at home. Pandemic years of Covid-19 brought a novel approach to the use of medicinal plants. Cough is not only distressing to patients, but also increases the risk of community transmission by respiratory droplets. Stigmatization of patients with cough can occur, leading to social isolation, particularly during the infections with covid-19. Identifying ways to control Covid -19-associated cough could help to prevent community transmission and disease spread, as well as removing the stigma of this symptom. The aim of our survey was to know the cough treatments with Covid-19 children patients treated home with simple and moderate symptoms. The behaviors of pharmacist and doctors’ community for treating these symptoms with Phyto preparations. This is a survey study conducted in open big ten network pharmacy of Tirana and to the 3 main ambulatory clinics of during of Tirana during the pandemic year 2021 for the period October -December 2021. We collected information concerning the use of antitussive medicine s in this period from a questionnaire distributed to pharmacist and doctors which consisting open and closed questions. The biostatistical expert suggested to includes a combination of original question containing both the qualitative and quantitative data to the questionnaire. Data received from the questionnaire had two type of questions 1) multiple choice and 2) open questions. Results shown that antitussive medicinal plants were preferred compare with other alternatives. Mostly of the patients used in the wrong way in terms of frequency and durations. From the total 240 patients only 195 (81.25%) has given corrects to the pharmacists or have completed all the questions. From all the plants althea officinalis was the most used with 66% followed, by thymes vulgaris 29% the rest where different medicinal plants. In conclusions is necessary knowledge to orients pediatrician for the right use of Phyto medicine. Plants Althea officinalis, Thymus Vulgaris can demonstrate the same efficacy compare with synthetic antitussive medicine, but less side effects. They must be well known through educations program. Side effects of medicinal Herbs are lower, and they may be used with their proper efficacy that they have and can use longer than synthetic ones.
Sensorineural Hearing Loss as a Common Finding in Chronic Kidney Failure Patients Undergoing Hemodialysis
Authors: Vajushi Emirjona , Shabani Zamira
Published: June 2022

Background: Chronic renal failure affects all organ systems. Senses are not exception and hearing impairment in this group of patients is very common, particularly sensorineural hearing loss (SNHL). The aim of this study is to put in evidence the situation of sensorineural hearing in hemodialysis patients that are presented at our department. Methodology: This is a transversal study. In this study were included 65 patients.21 (32.3%) female patients and 44 (67.7%) male patients Study was performed in the American Hospital 2 of Tirana during years 2015-2016. 27 (41.5%) patients during 2015 and 38 (58.5 %) patients during 2016. Results: 81.5 % of patients under hemodialysis had sensorineural hearing loss. 18.5 % of patients under hemodialysis had normal hearing. 15.4% of patients had mild sensorineural hearing loss, 50.8% of patients had moderate sensorineural hearing loss, 9.2 % had severe sensorineural hearing loss and 6.2% of patients had profound hearing loss. Hearing loss was mostly in high frequencies but without a specific pattern. All patients with sensorineural hearing loss (100%) had two sides damage of hearing. Conclusions: Sensorineural hearing loss is very common in hemodialysis patients. The hearing loss affects more the high frequencies. In the patient care of hemodialysis patients should be included the routine hearing monitoring test.
Challenges of Nursing Students in Relation to Academic Performance at the Faculty of Technical Medical Sciences
Authors: Gripshi Silvana , Rustami Etleva , Pula Alma
Published: June 2022

Nursing students face various challenges during their years of study, which may hinder their academic performance. The success of nursing students is particularly important given that they must provide quality care to patients, family members and the community. Academic performance in nursing programs includes advances in theoretical subjects and the acquisition of practical skills in the clinic. A series of studies have shown that during the years of study, nursing students face many difficulties that affect their learning skills and consequently their academic performance. This study aims to identify and describe the difficulties experienced by nursing students of the Faculty of Technical Medical Sciences of Tirana in relation to academic performance. This goal was achieved by using a qualitative research method, such as focus group discussion. Data were collected through discussion with 51 Bachelor students, 17 of whom in the first year, 15 in the second year and 19 participants in the third year. For each year of the study 2 semi-structured discussions were held and the data were analyzed through thematic analysis. The findings of this study found that nursing students face these difficulties: Low level of students engagement in clinical practice; Low number of nursing courses; Passive teaching methods; Unfair and non-transparent evaluation; Large number of exams per season; Insufficient time to prepare for the season; Employment and finances; Physical environment in the faculty and public transport. Heads of Departments and Faculty can use the findings of this study to provide the necessary support that nursing students seek in reducing the difficulties they face in order to enhance their academic performance.
The Role of Hemodialysis in Sensorineural Hearing Loss in Chronic Kidney Failure Patients
Authors: Vajushi Emirjona , Aga Alfred
Published: June 2022

Chronic renal failure affects all organ systems. Senses are not exception and hearing impairment in this group of patients is very common, particularly sensorineural hearing loss (SNHL). The aim of this study is to evaluate if hemodialysis affects hearing in patients with chronic kidney failure. This is a transversal study. In this study were included 65 patients. 21 (32.3%) female patients and 44 (67.7%) male patients Study was performed in the American Hospital 2 of Tirana during years 2015-2016, 27 (41.5%) patients during 2015 and 38 (58.5%) patients during 2016. In our study there is no characteristic connection between level of hearing loss and number of months in hemodialysis. The same result is that there is no characteristic connection between medium number of months of kidney failure and level of hearing loss. There are controversial results in many studies about this correlation but without clear results. Sensorineural hearing loss is very common in hemodialysis patients. Sensorineural hearing loss in hemodialysis patients in our study is not affected by the number of hemodialysis sessions and by the number of months with kidney failure. But still there are needed more studies in large groups of patients to arrive in a definitive conclusion.
Role of Arterial Hypertension and Diabetes Mellitus in Hemodialysis Patients with Sensorineural Hearing Loss
Authors: Vajushi Emirjona , Shabani Zamira
Published: June 2022

Cases of chronic kidney disease (CKD) patients have increased significantly in the past few years. The main causes of chronic kidney disease are arterial hypertension and diabetes mellitus. The aim of this study is to identify arterial hypertension as one of the causes of neurosensorial hearing loss in patients under hemodialysis treatment. Methodology: This is a transversal study. The study population is 65 patients who are undergoing hemodialysis treatment at the American Hospital during the years 2015-2016. All collected data were calculated with SPSS program. Pearson R correlation, ꭓ² test, and ANOVA test were used to analyze the sample. Results: In this study were included 65 patients where 27 are from 2015 and 38 from 2016. 32.3% of patients were female and 67.7% male. Age min 32 years and max 83 years, mean = 62.69 years, DEV Std ± 11.32 years. In our study 81.5% of patients had problems with sensorineural hearing loss of varying degrees, ranging from mild sensorineural hearing loss 15.4%, moderate sensorineural hearing loss 50.8%, severe sensorineural hearing loss 9.2% and profound sensorineural hearing loss 6.2%. Conclusion: Hemodialysis patients with arterial hypertension are more likely to have sensorineural hearing loss than hemodialysis patients without hypertension. The presence or absence of DM in patients undergoing dialysis does not affect hearing problems.
Winning Prescription Without Title of State Property
Authors: Kullolli Brunela
Published: June 2022

This paper is a study on the winning prescription without the title of state property, which is in itself one of the first ways of acquisition of property according to Albanian legislation. The project of this topic is the analysis of the practical implementation of the institute of winning prescription without the title of state property. From the comprehensive treatment made in practice regarding the procedural and material aspects of this institute, the issues raised for analysis are related to resolving the issue of whether state property is an item capable of being acquired by winning prescription and whether the issuance of laws and bylaws will be considered cause for termination of the statute of limitations. Seeing in full the legislation in force in the Republic of Albania, as well as the spirit of this special legislation in the field of property and and wealth real estate.State property is considered an impossible object to be acquired by winning prescription, as long as they do not meet the legal criteria for their transfer to private ownership entities..The plaintiff must prove that the lawsuit is directed against the person who was the owner until the conditions of the winning prescription are met.
Analysis of Ismail Kadare Prose Prospects Under the Optics of V. L. Propp
Authors: Lamcja Dhurata
Published: June 2022

When it comes to Albanian and Balkan literature, Ismail Kadare is undoubtedly one of the figures of the greatest importance for the development of modern literature, while reviving the elements of folklore lost in the empty communist literature. Kadare's work matters beyond the technical elements, the use of words, flow, and themes, for the important role he played with his silent attempt to reawaken the hope for freedom, through the hidden literary figures in his work. On the other hand, his contribution to literature comes as a result of his mastery to bring a new and modern spirit to literature, using motifs and figures used for centuries in Albanian folklore but wrapped in stories and characters of placed at different times from popular literature. Certainly, the inclusion of folkloric elements such as the taking of motifs and themes from old Albanian tales and legends leaves room to suggest the analysis of his work under the optics of Propp analysis, as a novelty in the analysis of the work of Balkan authors that share features similar to Kadare.
Albania in the last decade of the Ottoman occupation according to French diplomacy during the years 1901 – 1911
Authors: Simon Lufi , Nilaj Marsel
Published: June 2022

This paper discusses the sociological perspective of suicide. Suicide is a social phenomenon present in every society or culture and is considered as one of the problems and challenges of modern society of the individual and the family itself as a functional unit of society. The purpose of this study is to assess, analyze and role these sociological factors that influence suicide. The paper also reviews the literature on social factors and suicide warning signs in adolescents. The review identified these social factors that appear to increase the risk of suicide: family characteristics and socio-economic status, migration and emigration, physical and sexual abuse, previous suicide attempts, drug and alcohol use, bullying, sexual orientation, etc. Adolescent suicide is a growing concern worldwide and has an impact on family, friends / community. It is an important social phenomenon and the leading cause of death in young people therefore knowledge of social factors and warning signs are essential for the effective prediction, prevention and treatment of problematic situations of adolescents.
Low-Coordinate Erbium(III) Single-Molecule Magnets with Photochromic Behavior
Authors: Rogacz Katarzyna , Brzozowska Maria , Baś Sebastian , Kurpiewska Katarzyna , Pinkowicz Dawid
Published: June 2022

The structure and magnetic properties of photo-responsive magnets can be controlled or fine-tuned by visible light irradiation which makes them appealing as candidates for ternary memory devices: photochromic and photomagnetic at the same time. One of the strategies for photo-responsive magnetic systems is the use of photochromic/photoswitchable molecules coordinated to paramagnetic metal centers to in-directly influence their magnetic properties. Herein, we present two erbium(III) based coordination systems: a trinuclear molecule {[ErIII(BHT)3]3(dtepy)2}.3C5H12 (1) and a 1-D coordination chain {[ErIII(BHT)3(azopy)}nnC5H12 (2), where the bridging photochromic ligands belong to the class of diarylethenes: 1,2-bis(2-methyl-5-pyridyl)thie-3-yl)perfluorocyclopentene (dtepy) and 4,4'-azopyridine (azopy), respectively (BHT = 2,6-di-tert-butyl-4-methylphenolate). Both compounds show slow dynamics of the magnetization, typical for single-molecule magnets (SMMs) as revealed by alternating current (AC) magnetic susceptibility measurements. The trinuclear compound 1, shows also an immediate color change from yellow to dark blue in response to near-UV irradiation. Such a behavior is typical for the photo-isomerization of the open-form of the ligand o-dtepy ligand into its closed-form c-dtepy. The color change can be reversed by exposing the c-dtepy to visible light. The chain-like compound 2, on the other hand, does not show significant signs of the expected trans-cis photoisomerization in response to UV irradiation and does not appear to show photoswitching behavior.
Tecnologías y vida cotidiana: una revisión del modelo de domesticación
Authors: Sandoval Luis Ricardo
Published: June 2022

Ya han transcurrido veinticinco años desde que Roger Silverstone y otros investigadores propusieran a la domesticación —es decir, el proceso por el cual una especie animal o vegetal es transformada con el objeto de convivir con el ser humano— como una metáfora apropiada para comprender los modos en que los dispositivos tecnológicos son incorporados a la vida cotidiana de las personas, iniciando así el recorrido del modelo de domesticación de tecnologías. Esta propuesta resultó sumamente productiva en términos teóricos y empíricos, dando lugar a un conjunto de reflexiones e indagaciones que se convirtieron en parte del trasfondo habitual de la investigación acerca de los procesos de apropiación de tecnologías que se realiza desde una perspectiva sociocultural. Esta revisión presenta los principales lineamientos de su enfoque, reseña los resultados de las investigaciones que ha suscitado y discute sus límites y las adaptaciones necesarias para dar cuenta de los fenómenos tecnocomunicativos actuales
Los nuevos comunicadores audiovisuales: oportunidades profesionales y formación requerida en el contexto español
Authors: Grijalba de la Calle Nicolás , Saavedra Llamas Marta , Jiménez Narros Carlos
Published: June 2022

La transformación digital del entorno audiovisual y sus efectos sobre las lógicas de creación, producción y comercialización de las industrias de la comunicación han impulsado la aparición de nuevos perfiles profesionales en los estudios de Comunicación Audiovisual en España. Los especialistas en este ámbito delimitan tres escenarios de especialización laboral, a los que las universidades deberían prestar atención con miras a la formación de los futuros profesionales del audiovisual en los siguientes entornos: (a) diseño, programación y desarrollo de aplicaciones y software; (b) marketing digital y gestión de plataformas de video y audio para su explotación en línea; y (c) efectos visuales, escenografía virtual y diseño de personajes y atmósferas 3D. Esta investigación tiene por objeto reconocer dichos perfiles profesionales e identificar las necesidades formativas asociadas con ellos, combinando literatura científica, informes y estudios, con entrevistas en profundidad a profesionales y docentes de acreditada trayectoria.
Análisis de la operación en la mejora del proceso de encerado de cítricos
Authors: Arenas Arrieta Inelvy de los Ángeles , Cruz-Rivero Lidilia , Lince-Olguín Ernesto
Published: June 2022

México es considerado uno de los principales productores de cítricos a nivel mundial. El objetivo de este trabajo es presentar el análisis de la operación para la mejora del proceso de encerado de cítricos en una empresa dedicada a esta actividad, ubicada en la localidad de Álamo, Temapache, en el norte del estado de Veracruz. Este análisis se llevó a cabo mediante la aplicación de los diez enfoques del análisisde la operación, con la finalidad de encontrar áreas de oportunidad de mejora para la empresa, a partir de lo cual se propone la implementación de herramientas de manufactura esbelta tales como 5S, Kaizen y mantenimiento autónomo para la optimización del proceso de encerado. Como resultado de este análisis se desarrolló una propuesta de mejora para simplificar los procedimientos operativos, mejorando el manejo de los materiales y utilizando el equipo de manera óptima, lo que le permitirá a la empresa ser más eficiente y productiva.
Determinación de la capacidad operativa del túnel de congelación de una empresa pesquera
Authors: Olivares Fabiola , Martínez-Cajahuanca Jane , Sánchez-Amado Domingo , Molleda Andrés
Published: June 2022

El objetivo fue determinar la capacidad operativa del túnel de congelación de una empresa de servicios pesqueros. Se inspeccionó el funcionamiento del equipo, se recopilaron los parámetros operacionales teóricos y, en cuarenta puntos seleccionados, se evaluó la velocidad (1,8 a 4,4 m/s) y la temperatura del aire (−25 °C y −11 °C), así como la temperatura inicial y final del proceso de congelación de perico (Coryphaena hippurus) entero eviscerado. La capacidad operativa real del equipo (77,2 kW) se calculó mediante la aplicación de expresiones matemáticas que permitieron determinar las cargas térmicas y, posteriormente, se comparó con la capacidad de diseño (75 kW). La velocidad y temperatura del aire al interior del equipo y la distribución de temperatura en el producto no fueron uniformes y dependieron de la ubicación de los ventiladores y de los puntos donde se realizaron las mediciones. Estas variaciones afectaron las cargas térmicas generadas por el producto y fueron directamente proporcionales a la velocidad del aire e inversamente proporcionales a la temperatura en el centro del producto. Los resultados indicaron que el túnel se encontraba trabajando por encima de su capacidad; los tiempos de congelación eran superiores a los reportados para perico congelado a temperaturas de entre −18 ºC y −20 ºC.
Optomyelitis associated with the presence of antibodies to myelin oligodendrocyte glycoprotein. Case report
Authors: Kalashnikova Anastasiia K. , Sheremet Nataliia L. , Andreeva Natalia A. , Zhorzholadze Nino V. , Ronzina Irina A. , Kaloshina Anna A.
Published: June 2022

Antibodies to myelin-oligodendrocyte glycoprotein (anti-MOG-IgG) is a specific biomarker that has been detected in peripheral blood from children with acute multiple encephalomyelitis (ADEM) as well as in adults with aquaporin-4 (AQP4), associated with seronegative opticoneuromyelitis spectrum disease (NMOSD), brainstem encephalitis, longitudinally disseminated transverse myelitis, and optic neuritis. Most experts now consider MOG-IgG-associated disorder (MOG-AD) an independent disease immunopathogenetically distinct from classical multiple sclerosis (MS) and aquaporin-4 (AQP4)-IgG-positive optomyelitis. Isolated, bilateral, and less frequently unilateral OH, with simultaneous or sequential involvement of the eyes, is the most frequent clinical manifestation of MOG-AD. Because of the significant overlap in the clinical and radiological picture, MOG-AD is often misdiagnosed as MS. Timely diagnosis is critical to ensure appropriate treatment. This article describes a clinical case of anti-MOG-IgG encephalomyelitis with late-onset ON initially diagnosed as MS.
Patients with depression in the early stages of Parkinson's disease: A cross-sectional observational study
Authors: Nodel’ Marina R. , Mahmudova Gyulnara Zh. , Niinoja Ilmar Nikolas V. , Romanov Dmitry V.
Published: June 2022

Background. Depression is one of the most maladaptive manifestations of Parkinson's disease (PD). The relationship between depression and motor, cognitive, and other affective disorders in the early stages of PD remains debatable.
Aim. To assess the frequency and severity of depression, to clarify the features of motor, affective disorders, and cognitive functions in patients with depression in the early stages of PD.
Materials and methods. We observed 61 patients diagnosed with PD at stages III according to the HoehnYahr scale. The average age was 62.29.6 years, the average duration of PD was 2.51.6 years. Data were analyzed using the Unified PD Scale, the Beck Depression Inventory, the Apathy Scale, the Spielberger Anxiety Inventory, the PD Cognitive Assessment Scale (SCOPA-COG), the digital character substitution test (the symbolsnumbers test), the Montreal the Cognitive Function Assessment Scale (MoCA), the number-to-letter combination test, the Stroop test.
Results. Symptoms of depression were detected in 48 (79%) patients with PD; 20 (33%) patients had subdepression, 24 (39%) had moderate and severe depression, and 4 (7%) had severe depression. In patients at stage I PD according to HoehnYahr, the frequency of moderate depression was 28%, at stage II (moderate and severe) 45%, and severe 10%. Patients with depression were characterized by a greater severity of motor symptoms, disturbances in daily activities, anxiety, apathy, as well as a decrease in executive cognitive functions. An inverse correlation was noted between the duration of depressive symptoms and deterioration in performance on tests to assess attention and control cognitive functions.
Conclusion. Depression is a characteristic feature of the early stages of PD. Its frequency and severity increase from stage I to stage II of PD. Depression can be considered as an indicator of a more severe course of the disease, the progression of impairments in controlling cognitive functions. The possibility of assessing the prognosis of the course of the disease additionally substantiates the need to diagnose depression in patients with PD in the early stages of the disease.
Erenumab efficacy predictors for chronic migraine
Authors: Vashchenko Nina V.
Published: June 2022

The diagnosis of chronic migraine (CM) is made when there are 15 or more days of headache per month in a patient with migraine. Approximately 2.5% of patients with episodic migraine develop chronic migraine, which is more difficult to treat and often leads to drug-induced headache (LIH). Such patients are rarely included in clinical trials.
Aim. To analyze in clinical practice the effectiveness of the CGRP monoclonal antibody erenumab after 6 months of therapy in patients with CM with and without LIHD, and to evaluate possible predictors of the effectiveness of prophylactic therapy.
Materials and methods. The study included 47 patients with CM taking erenumab at a dose of 70 mg monthly for at least 3 months. Patients completed a headache diary throughout the study. The 12-item Allodynia Symptom Checklist (ACS-12) was used to assess the presence of allodynia. After 6 months of therapy, the efficacy and safety of treatment, the presence of LAH and possible predictors of efficacy were evaluated.
Results. After 6 months of therapy, 22 (78.6%) patients no longer met the criteria for LIHD. The factors that positively influenced the outcome of therapy were the absence of allodynia (p0.05), the presence of photo- and phonophobia, and the one-sidedness of pain (p0.05). The age and number of days with headache in patients with HM before treatment did not have a statistically significant effect on the effect of therapy. The presence of LIHD did not statistically significantly affect the outcome of therapy.
Conclusion. CGRP monoclonal antibodies are reasonable in patients with LIHD. The presence of LIHD does not affect the efficacy of erenumab prophylactic therapy, the presence of allodynia may be a predictor of failure, and the unilaterality of pain and irritability to light and sound indicate likely efficacy. Real-world studies with a large cohort of patients and longer durations of therapy are required to confirm these results.
A2/O 污水处理工艺的研究进展
Authors: 雪 臧
Published: June 2022

氮和磷含量的增加是导致水体富营养化的主要原因之一。目前，主要采用废水脱氮除磷技术对其进行有效预防。论文针对A2/O工艺中国和其他国家研究现状进行了综述，并在此基础上分析了A2/O工艺的影响因素，同时对A2/O工艺目前研究中存在的问题进行了适当总结，并对A2/O工艺未来发展的方向进行了展望。
城市内河生态环境治理规划及措施分析
Authors: 琳 符 , 志宏 薛
Published: June 2022

城市内河生态环境系统会直接影响到城市中居民的身体健康以及生活的质量，为了解决和弥补传统的城市河湖治理过程中存在的不足，需要结合实际情况，组织开展城市内河生态环境的治理规划工作，提出相对应的治理规划措施，让城市内河生态环境保护效果更加理想，让城市内河的生态建设效果更明显。论文结合实际情况，首先了解城市内河生态环境规划治理遵循的基本原则，探讨并提出城市内河生态环境规划和治理的方案和对策，希望可以更顺利地组织开展城市内河生态环境的治理工作，加快城市发展和建设的脚步。
水利项目建设中的生态环境保护探析
Authors: 丽霞 陶 , 超 张
Published: June 2022

水资源是日常生产生活中的重要资源。目前，社会水生态环境保护已成为各行各业人们关注的焦点，但在水生态环境保护和管理的过程中仍然存在着各种问题。
某城市大气环境污染成因分析及污染防治对策
Authors: 欣 艾
Published: June 2022

环境空气质量改善是目前各大城市环境保护工作的首要任务。论文对某城市大气污染进行成因分析，并提出相对应的污染防治对策，为相同类型城市的环保工作提供参考。
探讨地下水环境影响评价工作的常用对策
Authors: 娜 李
Published: June 2022

工业化进程的速度不断加快，导致部分工业废水直接排放到环境之中，这严重污染地下水的水质，使得人们的生活以及社会发展面临一定的威胁。与此同时，对地下水环境影响评价工作带来一定的挑战。想要使该项工作能够顺利开展，就需要对有针对性的对策进行全面研究。论文从地下水环境评价关键因素入手，对常用对策全面研讨。
水污染治理在环境保护中的新方向
Authors: 林菲 宋 , 宁 杨 , 美芳 王
Published: June 2022

如今中国经济发展势头良好，但也需注意到水污染已经十分严重，对整个社会都将造成严重的影响，由于环境被破坏，污染问题未得到及时解决，生态文明的实现还需要时间因此就必须高度重视水污染问题，同时还应针对水污染的问题制定相应的解决措施，在这种背景下，就需要探究环境保护的新方向来解决水污染，不仅有利于实现生态文明，也有利于社会经济的可持续发展。
基于碳排放的大气污染综合控制分析与治理研究
Authors: 益振 杜 , 鹏 于 , 灿 赵 , 琛琛 张
Published: June 2022

主要就中国目前大气环境污染的主要污染物来源和对污染物排放进行控制的技术进行论述，对大气的污染源进行分类概述，再依据理论知识并结合中国大气环境污染的实际情况提出控制碳排放的方案，并对污染物的排放量进行量化估计，最后再对中国目前常用的控制管控技术进行介绍和改进，以此期望能够促进中国大气环境污染得到管控和控制。
绿色奥运践行生态文明环保建设理念
Authors: 鑫 马
Published: June 2022

在北京成功申办2022年冬季奥林匹克运动会后，中国国家主席习近平就提出了“绿色、共享、开放、廉洁”的承办理念，其中将绿色环保放在首要和突出的位置，表明了中国政府和中国人民对节能环保和可持续发展的坚定决心和殷切期待。北京奥运会筹办和举行将绿色环保和可持续性发展提升到一个新的层次和水平，为国际奥林匹克运动和世界的可持续发展作出了积极贡献，更是对中国生态文明理念和实践的进一步补充和落实。
建筑给排水工程中节能减排策略的应用剖析
Authors: 美英 晁
Published: June 2022

在这个阶段，随着社会的发展，我们的科学技术也有了很大的进步。工程施工时的资源和能源量很多，一部分资源不能有效利用，导致资源的浪费。在现在的开发状况下，节能减排工程是建设业的开发目标。供水排污技术建设中能耗很大，水资源的浪费也很大。合理遏制污水工程能耗、降低排水是建筑业应研究的课题。同时还讨论了建筑给排水工程施工中节能减排的对策。
基于绿色施工管理理念的建筑施工管理创新分析
Authors: 静静 苏
Published: June 2022

绿色建筑是新时期中国建筑业未来的重要组成部分。为了使绿色施工管理理念更好地适应发展需求，所以一直以绿色建筑理念为指导。在此过程中，加强设计管理创新工作的发展也是有必要的。因此，论文是在此背景下编写的，首先概述了新时期绿色建筑的内涵，其次分析了建筑管理的有效性和创新策略，最后对全文做了简单的概述。
环保新形势下环境影响评价工作的挑战及应对建议
Authors: 修杰 陈 , 玉敏 邵
Published: June 2022

新形势下，需要重视环保工作呈现出的新特征，应结合实际的工作要求规范基本行动，确保环境保护中的环境影响评价有条不紊的落实。论文重点分析环保新形势下的环境影响评价工作情况，分析不足之处，提出合理化建议。
甲醇储运安全管理探究
Authors: 彬 陈
Published: June 2022

甲醇是重要的化工产品及化工原料，广泛用于生产塑料、合成纤维、合成橡胶、染料、涂料、香料、医药和农药等。目前，甲醇主要下游产品有甲醛、醋酸、甲基叔丁基醚（MTBE）、甲胺类、氯甲烷类、对苯二甲酸二甲酯（DMT）、甲基丙烯酸甲酯（MMA）、二甲醚等，上述产品又可生成各自的衍生物。由甲醇生产的化工产品达数百种。因此，甲醇在储运过程中要格外注重安全的管理。所以，论文对甲醇储运安全管理进行针对性，从而有效提高甲醇储运的安全性。
两级气浮除油技术在污水处理中的应用探讨
Authors: 婧 徐
Published: June 2022

近年来，随着中国现代化工的迅速发展，石油衍生品等高分子复合材料的生产与应用发展得越来越快。在对石油裂解，重整中，大量的含油废水会同期产生。作为对含油废水处理的预处理工艺段，如何快速、有效地去除油含量，从而为生化处理提供良好的处理环境成为了工业废水处理的关键。论文主要通过对两级气浮工艺原理，运行关键控制点上进行分析，以期为同等污水处理提供处理思路，实现对污油的有效去除，为生物处理奠定良好的基础。
The Potentiality of MOOCs as a Tool for Widening Access to Higher Education in the African Context: A Systematic Review
Authors: Modise Mpho-Entle Puleng
Published: June 2022

Emerging educational technologies and technological pedagogical innovations such as massive open online courses (MOOCs) have flooded Africa's higher education (HE) sector with many promises. This paper aims to investigate the perceptions among African HE institutions regarding the potentiality of MOOCs as a tool to increase access to quality HE. A systematic review of papers in peer-reviewed journals published between 2013 and 2020 was conducted in academic databases and 15 papers were selected. Key findings reveal that MOOCs continue to make progress in the African HE sectors. Results also show that MOOCs are mostly used as a self-learning element supporting formal qualifications within African universities’ frameworks. This practice allows only a limited number with resources to access higher education. Remarkably, most of the studies report a lack of awareness of MOOCs in African higher education institutions (HEIs). The results are contextual and the challenges and opportunities within the contexts of African and other developing countries' HE are varied; however, I would argue that MOOCs have gained global interest and thus sharing the perceptions and approaches that underpin MOOCs as a viable tool for increasing access to HE is an important part of moving this agenda forward in the sector.
Exploration of Malay Language Acquisition and Learning Experience among Orang Asli Students
Authors: Nor Shaid Nor Azwahanum , Hamid Shahidi A. , Maros Marlyna
Published: June 2022

Orang Asli, the indigenous community in Malaysia, is among minority groups facing difficulties acquiring the Malay language as a second language. Poor achievement and lack of research on the secondary school level among indigenous students have motivated the inquisition for this study. Using an ethnographic case study research design, a qualitative research approach was used to explore indigenous students' Malay language acquisition and learning experience. A total of 13 participants were chosen by purposive sampling technique in this research, comprising eight Orang Asli students from the Temiar tribe, two teachers and three of the students' parents. To acquire an in-depth picture of the phenomena, the data was collected using observation methods, interviews, and field notes at the only secondary boarding school of indigenous people on the Malay Peninsula's west coast. The study findings were analysed using the continuous comparison method to identify the themes and subthemes involved. The findings revealed that the learning and acquisition of the Malay language as a second language were among the skills learned in school, just like any other subjects. This study shows that efforts to cultivate the use of the Malay language were found challenging due to the less conducive school and social environments for a second language acquisition process. Thus, this study contributes to a better understanding of indigenous students perceive their second language, which has implications for improving Malay language teaching and learning practices as a second language, particularly among the Orang Asli community in Malaysia.
The Development of Albanian School Principals: A Challenge to Avoid Old Concepts and Value the Importance of Development
Authors: Vampa Magdalini
Published: June 2022

The school principal is the driving force behind the culture and performance of a school and directly influences the teachers and students. However, the development of school leaders remains problematic even after 30 years of education system reforms in Albania. This paper primarily seeks to demonstrate the importance of forming a generation of effective school administrators and universities’ critical role in accomplishing this goal. Particular attention should be paid to overcoming the lingering mentalities of the communist system, which are unresponsive to the demand for professionals who can lead in challenging and uncertain times. Using deductive thematic analysis and the categories that resulted from the coding process, such as “leader characteristics” and “leader’s formation models,” to interpret Albanian official education documents from during and after its communist dictatorship, results were obtained that support the importance of universities in meeting school leaders’ training needs and providing them with professional qualifications. The results show that the cultural influences of communism affect the current leadership model in Albania and leadership training policies should utilize higher education, as the best and most efficient means to overcome the lingering influences of communism.
The New Storstrøm Bridge - Construction Tolerances and Precast Structures Installation Challenges
Authors: Raimondi Marco , Toscan Alessandro
Published: June 2022

The construction of the Storstrøm Bridge faced and is facing a number of challenges, to ensure the alignment with design assumptions and project requirements. The main constraints related to tolerances and quality requirement are hereby described together with the strategy implemented to execute works. From the positioning of precast foundations to the erection of the girders a number of constraints pose a challenge to the general contractor (SBJV) since their fulfillment is crucial to ensure that the bridge performance standards are met, the construction program is followed and works disruption does not occur. The geotechnical settlements represent a particular challenge since the natural uncertainties related to their calculation require SBJV to adopt solutions that can accommodate any deviation from the predicted ones. In light of the above, a crucial role is played by advanced planning risk management and monitoring during construction operations.
The New Storstrøm Bridge – Prestressed Box Girder Design
Authors: Cargnino Luca , Po Edoardo
Published: June 2022

The New Storstrøm Bridge is a 3.8 km long combined rail and road bridge currently under construction. It will be Denmark’s third longest bridge. It comprises two approach viaducts with 44 spans, typically 80 m long, and a single-tower cable stayed bridge located centrally within the strait crossing, with two 160 m navigational spans. The 25 m wide deck is a prestressed concrete box girder with a unique asymmetric cross section and wide cantilevers. It carries a two-track, high speed railway and a carriageway comprising a two-lane road and a combined pedestrian-cycle. The tight construction schedule imposed to the Design & Build Contract requires the use of full prefabrication of the box girder. A span-by-span construction method based on the erection of typically 73 m-long precast segments is adopted. This paper presents the main challenges of the box girder design due to the construction method, the unusual cross-section and the heavily asymmetric traffic loading.
Structural Characteristics and Analysis Simulation of New Core Truss Structure
Authors: Nakagawa Shunichi , Aoki Masato , Matsuzaki Nariyoshi , Seki Fumio , Hasegawa Yudai
Published: June 2022

The possibilities of the truss structure are extended and a new core truss structure (Square Core Truss structure, hereinafter referred to as SCT structure) is proposed. The SCT structure consists of four pairs of diagonal members connected by two panel points, and the structure is stabilized by using deformation restraint member in the space between the panel points. This causes contact problems between the diagonal members and the deformation restraint members, complicating the simulation of the boundary conditions. In this paper, a wooden pedestrian bridge with a span of 8m was designed and fabricated by structural analysis (3D framework analysis). Static loading experiment was conducted on the specimen to confirm the mechanical properties due to contact. The experimental results and the results of contact analysis simulation, reproducing the contact condition using the nonlinear finite element method, are reported.
Development of timber–UHPC composite bridge system
Authors: Holý Milan , Čítek David , Tej Petr , Kolísko Jiří , Vráblík Lukáš
Published: June 2022

This paper describes the development of an innovative timber–concrete composite (TCC) bridge system. The optimization of TCC bridge structures using the application of a precast bridge deck made of ultra-high-performance concrete (UHPC) was studied in this research program. The first part of research program was focused on the verification of mechanical characteristics of the proposed shear connection system. Another part of the experiments was focused on the verification of the load-bearing capacity of thin slabs made of a local mixture of UHPC. Finally, a full-scale experimental structure was built. The load-bearing structure was designed as glue-laminated timber beams connected with only 60-mm-thick precast bridge deck segments made of UHPC. The overall load test of experimental structure until failure was performed. The results of the experiments were evaluated in detail and compared with analytical calculations and numerical simulations.
Fatigue behaviour of cracked concrete decks under cyclic shear loading
Authors: Stempniewski Lena , Kuhlmann Ulrike
Published: June 2022

In large steel-concrete composite road bridges cracking occurs in the concrete deck due to tension resulting from negative bending moments at the support area. Simultaneously, high wheel loads from the traffic act as cyclic shear loading on the concrete. As a result, tension forces coming from the global load-carrying effect need to be superimposed with local vertical forces due to the wheel loads acting as cyclic shear loading. In this paper, the results of experimental investigations regarding the fatigue strength of the cracked concrete deck in tension are discussed. Furthermore, the effect of the longitudinal reinforcement ratio and the height of the tensile stress is pointed out.