Preface to Special Issue in Honor of Carlos Castillo-Chavez by Simon A. Levin

“…But that success had only whetted his appetite to become more deeply embedded in biology, and he was prepared to give up his faculty job to start a postdoctoral fellowship in ecology. It is always difficult to read in such letters what potential exists in the author; but there was something about what Carlos wrote, the obvious sacrifice he was prepared to make, and my regard for Fred Brauer that convinced me that I must meet this fellow. …”
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Prescribed Performance Tracking Control for Nonlinear Stochastic Time-Delay Systems with Multiple Constraints by Man Zhang, Ru Chang, Ying Wang

“…Also, this scheme ensures that the system states always stay within the constraint range, and the tracking error meets the prescribed performance constraint. …”
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Prevention of The Crime Of Trafficking in Persons (TPPO) in Cases Of Illegal Sending Indonesian Migrant Workers (PPMI) Overseas as Foreign Ship Crew by Aulia Aulia

“…Human trafficking has various modes, apart from the perpetrators and victims, it must always be understood in terms of legal definitions. …”
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The influence of transactional leadership style and transformational on organizational commitment with compensation as a moderating variable by Lukieto Cahyadi, Willy Cahyadi

“…Seeing the results of this study which shows that the provision of compensation strengthens the relationship of leadership style to organizational commitment, it is expected to continue to maintain compensation to always support employee performance which of course will also have a positive impact on the productivity of the Binalita Sudama College of Health, Medan.…”
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L’abandon et l’appel, ou l’optimisme paradoxal de Graham Greene dans The Power and the Glory by René Gallet

“…When examined more closely, the feeling turns out to be highly ambiguous, and not always devoid of bad faith. It should be contrasted with the repeated phenomenon of calls to responsible action. …”
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Displacement Transmissibility Characteristics of Harmonically Base Excited Damper Isolators with Mixed Viscous Damping by Xiaojuan Sun, Jianrun Zhang

“…The resonant frequency always shifts to a lower value as the nonlinear damping component of the force fd(x˙)=c1x˙+c2|x˙|x˙ becomes stronger, and when the damping ratio in the corresponding linear model is relatively high, the relative transmissibility decreases at frequencies higher than the resonance frequency of the corresponding linear damping system and the absolute one increases for the frequency ratios above 2. …”
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Application of H∞ Filter on the Angular Rate Matching in the Transfer Alignment by Lijun Song, Zhongxing Duan, Jiwu Sun

“…In the engineering practice, system noise and measurement noise are always color noise, so the H∞ filter is more suitable for engineering practice than the Kalman filter.…”
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Effects of Smoke-Dust and CO on Controllable Circulatory Ventilation of an Extra-Long Highway Tunnel: Theoretical Model and Calculations by Feng Tian, Hai-qiao Wang, Shi-qiang Chen, Yong-ping Chen

“…The complexity, high energy consumption, and difficulty in controlling of extra-long highway tunnel have always been problematic in the civil engineering field. …”
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Calculation of Free Energy Consumption in Gene Transcription with Complex Promoter Structure by Lifang Huang, Peijiang Liu, Kunwen Wen, Jianshe Yu

“…Then, we show that the numbers of the ON and OFF states of a promoter can reduce energy consumption of the gene system and the Fano factor of mRNA, and in contrast to other regulatory ways, the cooperative binding of transcription factors to DNA sites always reduces energy consumption but amplifies the mRNA noise. …”
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Development of a linear programming module based on the dick and carey program to improve problem solving skills of students at the faculty of teacher training and education Batang... by Zulyadaini Zulyadaini

“…The lecture model is still used because students always have difficulties in understanding the material when given assignments or modules. …”
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Phonetics Applied to English for Specific Purposes in 5th year-medicine Students. by Elizabeth Mercedes Monagas Alvarez

“…<strong>Background:</strong> Pronunciation of the English language has always been one of the biggest problems in our Spanish speaker students not only at different levels but also at different kinds of teaching. …”
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Multicriteria decision making-based approach to classify loose-leaf teas by Eszter Benes, Attila Gere

“…However, it is important to note that there are no general rules regarding model performances and proper testing is always advised. For such, multicriteria decision making models (and especially SRD) is strongly advised.…”
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A Modified Reverse Remplissage Procedure for Management of a Locked Posterior Shoulder Dislocation by Xavier Zwiebel, Stéphane Pelet, Alexandre Leclerc

“…An impaction fracture of the anteroinferior aspect of the humeral head (called a reverse Hill-Sachs (RHS) fracture) is always present in case of chronic locked posterior dislocation. …”
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Features of reproductive behaviour of students on the example of the Tambov region of the Russian Federation by V. A. Filippenko

“…For a more complete realisation of the possibilities of reproductive behaviour of the young people, it is necessary to develop measures of both regional and federal support, since these measures can have a positive impact on the factor of confidence in the future and also that in the case of a difficult life situation, a young family will always have the opportunity to ask someone for help. …”
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A Vibration Reliability Analysis Method for the Uncertain Space Beam Structure by Yanyu Mo, Shuxiang Guo, Cheng Tang

“…Considering that uncertainty is inherent and unavoidable in engineering practice and the available information about the uncertain parameters is always not sufficient, the paper tries to carry out the nonprobabilistic vibration reliability analysis so as to avoid resonance on uncertain structure with bounded parameters. …”
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Vertical Line Extension Decisions in a Competitive Market with Consumers’ Need for Product Uniqueness by Jie Wang, Qin Su, Canyou Wang

“…This study develops the consumer’s utility function, which captures consumers’ behavioural and emotional factors, and the results show that the high-quality firm always introduces an upward extension without uniqueness sensitivity. …”
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Decoloniality, Indigenous Resistance, and Environmental Justice in Mother Forest: The Unfinished Story of C.K Janu by Midhun Mohan

“…Resistance voices were always raised against such inhumane deeds of expropriation. …”
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Estimating the grapevine cultivated biodiversity: indices for an objective evaluation by Jean-Michel BOURSIQUOT, Olivier Yobregat, Thierry Lacombe

“… There is always a lot of discussion about consequences of the concentration of the number of grapevine varieties cultivated and about the decline in diversity of the plant material and clones available from nurseries and used by the winegrowers. …”
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Dynamics of a Filippov epidemic model with limited hospital beds by Aili Wang, Yanni Xiao, Huaiping Zhu

“…If $R_0 \lt 1$, implementing these strategies can help in eradicating the disease although the disease cannot always be eradicated due to the occurring of backward bifurcation in the system.…”
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Unsteady Electroosmotic Flow of Jeffrey Fluid in a Circular Microchannel under the Combined Action of Vertical Magnetic Field, External Electric Field, and Pressure at High Zeta Po... by Meirong Ren, Tiange Zhang, Jifeng Cui, Xiaogang Chen, Bixia Wu

“…No matter what the Hartmann number is, the velocity always decreases with the increase of the retardation time. …”
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